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3D anatomical render of the knee joint bones held at a fixed angle in a dark cinematic setting, with no labels or markings
Knee & Lower Leg — all conditions
DC 5256 · #45147

Ankylosis of the Knee

The knee is fused. It does not move at all — and the angle it is frozen at decides the rating.

Ankylosis is the end of the road for a joint: bony or fibrous fusion, no usable motion in any direction. It is the highest-paying knee code, running from 30% to 60%, and — counter-intuitively — the straighter the fusion, the lower the rating. A knee fused at full extension is still a leg you can stand and walk on. A knee fused at 45 degrees or more is a leg you drag. The angle is the whole rating.

Before Anything Gets Rated

What The VA Is Actually Looking For — And What Service Connection Really Means

Before the VA ever opens the rating schedule, it asks one question: is this disability the government’s responsibility? That is what “service connection” means. It is not a diagnosis, it is not sympathy, and it is not a reward for having served. It is a legal finding that a current, diagnosed disability is linked to something that happened to you in uniform. Percentages come later. If service connection is not established, there is nothing to rate and the claim is denied — no matter how bad the knee ankylosis is.

A veteran reviewing a VA decision letter at his desk, hands gripping the document

The three elements the VA must find. All three. Every time.

These come out of Caluza v. Brown and Shedden v. Principi, and they are the checklist a rating officer works through on your file. Miss one and the claim fails on that element alone.

1

A current, diagnosed disability

A doctor has to have written a diagnosis in a medical record — knee ankylosis. Symptoms by themselves are not a disability the VA can rate. Saunders v. Wilkie held that pain causing functional impairment can be a disability, but you still need a clinician to document it as diagnosed and impairing. The diagnosis must exist now, during the claim period — not only years ago.

2

An in-service event, injury, illness or aggravation

Something in service had to have happened — an injury, an exposure, a documented sick call, or steady wear over a career. It does not have to be one dramatic moment and it does not have to be spelled out in your service treatment records: buddy statements, unit records, performance evaluations and your own competent lay testimony can establish it.

3

A medical nexus linking the two

A qualified medical opinion that says the current diagnosis is at least as likely as not related to the in-service event. That phrase matters: at least as likely as not means 50 percent or better. Under 38 C.F.R. §3.102, when the evidence is evenly balanced, the benefit of the doubt goes to you and the claim must be granted.

The five ways service connection is established

Most veterans only know the first one. The other routes are lower-effort paths to the same grant — and the secondary route is the one most often left on the table.

Direct — 38 C.F.R. §3.303(a)

The injury or disease began in service and never went away. The classic route: three elements, one nexus opinion.

Chronicity and continuity — §3.303(b)

A chronic condition shown in service, plus continuity of the same symptoms from separation to now, can establish the link without a formal nexus opinion. Your own testimony about symptoms you can observe is competent evidence.

Presumptive — §3.307 and §3.309

Certain chronic diseases are presumed service connected if they manifest to a compensable degree within a set window after separation. You do not have to prove causation at all.

Secondary — §3.310(a) and (b)

A disability proximately due to, or aggravated by, an already service-connected condition is itself service connected. This is how the downstream conditions knee ankylosis sets off get on the rating sheet.

Aggravation of a pre-service condition — §3.306

If you entered service with a condition and service made it permanently worse, the increase is compensable. The VA must rebut the presumption of soundness by clear and unmistakable evidence — a bar it frequently fails to meet.

VA medical care — 38 U.S.C. §1151

An additional disability caused by VA treatment, surgery, or a failure to diagnose is compensated as if it were service connected.

The bottom line — there is no way around this

No diagnosis, no rating. It has to be chronic. It has to cause impairment.

Without a diagnosis, the VA will not rate your claim.

The rating schedule is a list of diagnosed conditions and the codes attached to them. If no clinician has put a name on your condition in a medical record, there is no code to assign. Symptoms reported to a claims examiner are not a diagnosis. Get in front of a doctor and get it written down.

The condition must be chronic.

Chronic means persistent and ongoing — not something that resolved decades ago. The VA compensates a disability you carry today, which is why a documented, continuing treatment history matters more than the single worst day you ever had.

It must cause actual impairment.

Under 38 C.F.R. §4.1 and §4.10, VA compensation exists to pay for reduction in earning capacity. A diagnosis that costs you nothing gets a zero percent rating. The function you have lost is what converts a diagnosis into a percentage.

What this means for you before you file: get the diagnosis in writing, get the treatment history documented so the chronicity is undeniable, and describe the impairment in functional terms — what you can no longer do, and what it costs you at work and at home. Everything on the rest of this page is built on top of those three things.

The Percentages

Rating Schedule — Ankylosis of the Knee, Diagnostic Code 5256

Reproduced verbatim from 38 CFR §4.71a. Note the inverse logic: the greater the flexion angle at which the knee is fused, the higher the rating, because a bent fused knee is functionally far worse than a straight one. Also note that where ankylosis of a knee is so disabling that amputation with prosthesis would be equally serviceable, 38 CFR §4.63 and the amputation rule at §4.68 become relevant to the evaluation.

Photograph of a clinician examining a patient's rigid straight fused leg on an exam table during a clinical evaluation

30%

Favorable angle in full extension, or in slight flexion between 0 and 10 degrees.

40%

In flexion between 10 and 20 degrees.

50%

In flexion between 20 and 45 degrees.

60%

Extremely unfavorable, in flexion at an angle of 45 degrees or more.

Service Connection

Advice from the Advocate

Medical cutaway illustration of a knee joint fused solid with continuous bone bridging across the joint line and no remaining cartilage gap
Ankylosis is the end of the road for a joint — the femur and tibia fuse into one rigid unit, the cartilage gap disappears, and the joint no longer exists as a moving structure. Whether the fusion happened through trauma, infection, or surgical arthrodesis, the result is the same: a leg locked at one angle.

The advocate's notes on causation — Knee Ankylosis

The separate arguments that decide this code: where the VA will attack, the regulation that answers it, and the evidence that closes the gap.

Portrait of a professional VA disability advocate seated in a law office with bookshelves behind him
  1. 1A later fusion of a service-connected knee is service-connected — §3.310(a)

    Almost no knee is fused while the veteran is still in uniform. 38 CFR §3.310(a) grants service connection for any disability proximately due to or the result of a service-connected condition. A knee fused in 2019 because the joint injured in 1991 finally failed is one continuous disability. The surgical indication in the operative report — "end-stage post-traumatic arthritis" — is your nexus in the surgeon’s own words.

  2. 2The rating must not be less than the amputation equivalent — §4.68 and §4.63

    The amputation rule at 38 CFR §4.68 provides that the combined rating for disabilities of an extremity shall not exceed the rating for amputation at the elective level — but it works both ways as an analytical anchor. §4.63 addresses loss of use of a foot or hand where no effective function remains. Where a fused knee leaves the leg functionally useless, special monthly compensation for loss of use under 38 CFR §3.350 should be considered, and it is almost never raised on the VA’s own initiative.

  3. 3The angle must be measured, not estimated — §4.2 and §4.6

    The difference between 30% and 60% is entirely the fixed angle. 38 CFR §4.2 requires the examination report to be adequate for rating purposes and §4.6 requires the evidence to be evaluated fully. An examiner who writes "knee fused, no motion" without stating the angle in degrees has produced a report the rater cannot lawfully apply — and the default assumption will be the lowest tier.

  4. 4Everything above and below the fusion is secondary — §3.310(a) and §3.310(b)

    A fused knee forces the hip to circumduct, tilts the pelvis, torques the lumbar spine, and overloads the opposite leg completely. Under §3.310(a) those are disabilities proximately due to the service-connected knee, and under §3.310(b) any pre-existing hip or back condition that is made worse is compensable to the degree of aggravation. In a fusion case these secondaries are not speculative — they are mechanically inevitable.

  5. 5A fused knee is a TDIU case until proven otherwise — §4.16

    38 CFR §4.16 provides for a total rating based on individual unemployability where service-connected disabilities prevent securing or following substantially gainful employment. A leg that cannot bend rules out most physical trades outright and a great deal of sedentary work too. Where the schedular percentage is below 100%, TDIU must be considered whenever the record raises it — and a knee fusion raises it on its face.

Exposure & Aggravation

How Knee Ankylosis Happens In Service — And How It Gets Worse

How veterans pick this up in uniform — Knee Ankylosis

Knee Ankylosis rarely announces itself with one dramatic moment. It is built by what service asked of your body over months and years — and once it is service-connected, it is compensated for how it keeps getting worse, not for how it started. Below is how veterans pick this up in uniform, and who is most prone to it.

  • Surgical arthrodesis — deliberate fusion — after a service-connected knee was destroyed beyond repair
  • Severe intra-articular fracture from a vehicle rollover, aircraft mishap, or blast
  • Septic arthritis in service that destroyed the joint surfaces
  • Failed total knee replacement on a service-connected knee, converted to fusion
  • Heterotopic ossification following trauma or a burn injury
  • Advanced post-traumatic arthritis that progressed to spontaneous bony fusion
  • Prolonged immobilization and infection following an in-service open knee wound

Who is most prone to it

Veterans with severe documented in-service knee trauma — blast, rollover, high-energy fracture, or open joint wounds — and those whose service-connected knee was later fused surgically because nothing else was left to try.

The Symptoms

What Knee Ankylosis Actually Feels Like

  • The knee does not move — not with effort, not with help, not at all
  • The leg is locked at one fixed angle and stays there
  • You swing the whole leg from the hip to walk
  • You cannot sit normally in a car, a plane, a theater, or a booth
  • Stairs are managed one at a time, leading with the good leg
  • The hip and lower back on that side hurt constantly from compensating
  • The muscles around the joint have visibly wasted
  • Pressure sores or skin problems where a brace or the fused limb rubs

How this one is rated

Entirely on the angle of fusion. Full extension or slight flexion between 0 and 10 degrees is 30%. Between 10 and 20 degrees is 40%. Between 20 and 45 degrees is 50%. At 45 degrees or more it is extremely unfavorable and pays 60%. There is no motion to measure, so the entire exam is about establishing the fixed angle accurately.

What you are measured against

The fixed angle is measured with a goniometer against the neutral 0-degree extension position. Imaging confirms whether the fusion is bony or fibrous.

Each One On Its Own Page

Secondary Conditions — Aggravated or Caused by a Current Service-Connected Condition

Under 38 CFR §3.310(a), a disability that is proximately due to a service-connected condition is service-connected in its own right — and under §3.310(b), so is any additional disability caused when a service-connected condition aggravates a problem you already had. Each condition below is a separate evaluation with its own diagnostic code and its own percentage. They do not fold into the knee ankylosis rating — they stack on top of it. A veteran who claims only the primary condition leaves these ratings on the table.

Photograph of a person struggling to get into a car because the fused leg will not bend to fit in the seat

The work it takes away — this is a TDIU case

A leg that cannot bend rules out most physical trades outright and a great deal of sedentary work too — you cannot stand a shift, cannot sit at a normal workstation, cannot drive for a living. 38 CFR §4.16 requires that a total rating for individual unemployability be considered whenever the record raises it, and a knee fusion raises it on its face. Where the schedular rating sits below 100%, TDIU is the path to full compensation.

Photograph of an older person steadying themselves with a cane and one hand on a hallway wall, one leg held rigid

The falls and the loss of balance

A rigid leg cannot make the small corrections a normal knee makes over uneven ground, so a fused knee is a fall risk — curbs, stairs, wet floors, and slopes all become hazards. Falls cause new injuries that are themselves secondary to the service-connected knee under §3.310(a). Document every stumble and every near-fall, and note the cane, walker, or wall you now depend on.

Photograph of a person standing with a hand pressed to their lower back and hip from the strain of walking on a fused leg, wearing a knee brace

The spread to the hip, the spine, and the other leg

Everything above and below a fused knee overloads. The hip circumducts, the pelvis tilts, the lumbar spine torques, and the opposite leg carries the load the fused side cannot. §3.310(a) covers disability proximately due to the service-connected knee and §3.310(b) covers aggravation of anything pre-existing. Contralateral knee, hip, and lumbar claims off a fused knee are standard and provable — each its own rating.

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Knee & Lower Leg, In Detail

Knee & Lower Leg — Service Connection In Depth

Here is each claimable condition in this group on its own terms — what it is, what service did to it, and what the VA requires before it will connect it.

3D anatomical render of the knee joint bones and ligaments in a dark cinematic setting, with no labels or markings
DC 5257

Knee Instability — Recurrent Subluxation and Patellar Instability

Instability is a separate rating from range of motion, and that single fact is worth thousands of dollars a year to veterans who are never told it. The VA General Counsel has confirmed that a knee with instability under Code 5257 and arthritis with limitation of motion under Codes 5003/5260/5261 can carry both ratings at once, because they compensate different functional losses and therefore do not violate the anti-pyramiding rule at 38 CFR §4.14. Most veterans are rated for one and never learn they qualified for two.

Read the full Knee Instability page
3D anatomical render of the knee joint bones viewed from the side in a dark cinematic setting, with no labels or markings
DC 5260 · 5261

Limitation of Range of Motion of the Knee — Flexion and Extension

Range of motion in the knee is two separate measurements, and each one is its own diagnostic code. Flexion is the bend, rated under Diagnostic Code 5260; extension is the straighten, rated under Diagnostic Code 5261. Flexion tops out at 30%, extension climbs to 50%, and — this is the part veterans lose money on — 38 CFR §4.14 lets both be rated separately on the same knee, because they compensate opposite movements. Every percentage under both codes is a number on a goniometer, which means the rating is won or lost on how and when the measurement was taken. 38 CFR §4.59 requires that painful motion be treated as at least the minimum compensable rating, and DeLuca v. Brown, 8 Vet. App. 202 (1995) requires the examiner to account for additional loss during flare-ups and after repeated use. A single good-day number, taken cold and seated, is not a lawful rating picture.

Read the full Range of Motion page
3D anatomical render of the knee joint showing the cartilage surfaces between the femur and tibia in a dark cinematic setting, with no labels
DC 5258 · 5259

Semilunar Cartilage — Dislocated Meniscus and Meniscectomy Residuals

The menisci are two crescents of fibrocartilage sitting on the tibial plateau, and they are the reason your knee survives being landed on. Once one is torn and displaced, the joint mechanically catches. The VA rates this separately from motion and separately from instability, under two codes: 5258 for a dislocated meniscus with locking, pain, and effusion, and 5259 for symptomatic residuals after the cartilage has been removed. Both are frequently swallowed into a single motion rating that pays less.

Read the full Meniscus page
3D anatomical render of an arthritic knee joint showing worn cartilage and exposed bone surfaces in a dark cinematic setting, with no labels
DC 5003 · 5010

Degenerative and Post-Traumatic Arthritis of the Knee

Arthritis is the knee code that quietly pays when nothing else does. Under 38 CFR §4.71a, Code 5003, degenerative arthritis established by X-ray is rated on limitation of motion — but when the limitation is noncompensable, the regulation still assigns 10 percent for each major joint affected by painful or limited motion. Code 5010 applies the same rules to traumatic arthritis. And §4.59 independently entitles an actually painful joint to the minimum compensable rating. That is three separate routes to a payment on a knee whose degrees look "normal."

Read the full Knee Arthritis page
3D anatomical render of the knee joint bones held at a fixed angle in a dark cinematic setting, with no labels or markings
DC 5256

Ankylosis of the Knee

Ankylosis is the end of the road for a joint: bony or fibrous fusion, no usable motion in any direction. It is the highest-paying knee code, running from 30% to 60%, and — counter-intuitively — the straighter the fusion, the lower the rating. A knee fused at full extension is still a leg you can stand and walk on. A knee fused at 45 degrees or more is a leg you drag. The angle is the whole rating.

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3D anatomical render comparing a lower leg with a healed but bowed tibia against one with an unhealed gap between the bone ends, in a dark cinematic setting, with no labels
DC 5262

Impairment of the Tibia and Fibula, and Medial Tibial Stress Syndrome

Code 5262 covers the two long bones between the knee and the ankle, and since the February 7, 2021 revision it does two very different jobs. The first is structural failure of the bone — a fracture that healed crooked (malunion) or never healed at all (nonunion). The second is medial tibial stress syndrome, which the schedule added by name — the condition every veteran knows as shin splints, which for decades had no code of its own and was routinely denied because of it.

Read the full Tibia & Fibula page

The C&P Exam

What To Expect At The Knee Ankylosis Exam

This is the encounter your rating is built on. The examiner has a checklist and a limited window — what follows is exactly what happens in that room, so none of it surprises you.

Clinical Section — What To Expect at the Exam

What to Expect at Your Knee Ankylosis C&P Examination

Diagnostic Code 5256 — one number decides everything: the fixed angle

There is no range of motion to test, so this exam is short — and that is exactly the danger. The examiner has to do one thing correctly: put a goniometer on the fused leg and record the **exact angle in degrees**. Thirty percent and sixty percent are separated by that single measurement, and a report that omits it will be rated at the bottom of the ladder.

Condition

Knee Ankylosis — DC 5256

Governing questionnaire

VA Form 21-0960M-9, Knee and Lower Leg Conditions Disability Benefits Questionnaire

Click the form number to open the official questionnaire on VA.gov.

01In The Room

What happens during the exam

The tests and maneuvers for this condition

  • Goniometric measurement of the fixed angle
  • Imaging review to confirm bony versus fibrous fusion
  • Bilateral leg length measurement
  • Thigh and calf circumference, both legs
  • Observed gait over a real walking distance
  • Examination of the hip, lumbar spine, and contralateral knee
  • Assessment of assistive device use and skin condition

What gets measured, and to what number

Fixed angle in degrees

The single controlling measurement — recorded against neutral 0-degree extension.

Type of fusion

Bony union versus fibrous ankylosis, confirmed on imaging.

Leg length discrepancy

Measured, because fusion frequently shortens the limb.

Muscle atrophy

Thigh and calf circumference bilaterally — atrophy is expected and should be documented.

Gait and functional tolerance

Walking distance, standing tolerance, stair capability, ability to drive.

Secondary joint findings

Hip, lumbar spine, and opposite knee — all should be examined and noted.

Skin integrity

Pressure areas and brace contact points on the fused limb.

02Orientation

What to expect during this exam

What makes this exam different from every other C&P exam

1The angle in degrees must be written in the report

"Ankylosed" or "fused, no motion" is not enough. Ask directly whether the angle was measured and what number was recorded, and note the answer in your own file.

2Bony versus fibrous fusion should be identified

Imaging distinguishes solid bony union from fibrous ankylosis with a trace of painful movement. Both rate under 5256, but the distinction matters for future worsening claims.

3Loss of use and TDIU belong in this exam

Ask that the report address what the leg can functionally do — standing tolerance, walking distance, stairs, driving. That is the evidence that supports special monthly compensation and unemployability, both of which sit above the schedular rating.

See it before you sit in the room

Clinical illustration of a goniometer being used to measure the fixed flexion angle of a surgically fused knee
Measuring a fused knee. The goniometer records the fixed angle against neutral extension. Zero to 10 degrees rates 30 percent; 45 degrees or more rates 60 percent. This one measurement is the entire rating.

03Preparation

Know your symptoms and secondary factors

What the report must actually say about knee ankylosis — dc 5256

  • "Please measure and write down the exact angle it is fused at."
  • "I swing the whole leg from my hip — it does not bend at all."
  • "I cannot sit in a normal seat; I have to put the leg out into the aisle."
  • "My hip and my lower back hurt every day because of how I walk now."
  • "I can stand for about X minutes and walk about X yards."
  • "There is no job I can do standing, and sitting is difficult too."

Pain level, frequency, lost work and functional loss — how to say them

Photograph of a man seated with one leg held straight out in front of him because the fused knee cannot bend

Insist the exact fused angle is written in degrees

Under Diagnostic Code 5256 the angle of fusion is the entire rating30% at full extension, climbing to 60% at 45 degrees or more of flexion. "Ankylosed" or "no motion" tells the rater nothing. The examiner must put a goniometer on the leg and record the number. If that number is not in the report, the rater defaults to the bottom of the ladder.

Ask directly whether the angle was measured and what number was recorded, and write the answer in your own file the same day.

"Please measure the exact angle my knee is fused at and write the number in your report — that number is my rating."

Photograph of a person walking outdoors with a stiff-legged gait, swinging the rigid straight leg out from the hip

Describe the stiff-legged gait — you swing it from the hip

A fused knee cannot clear the ground the normal way, so the whole leg circumducts and swings out from the hip on every step. That gait is objective proof the joint does no work at all, and it drives the secondary hip and back claims. Describe how you walk, not just that walking hurts.

Tell the examiner how far you can walk before the hip and back give out, and whether you use a cane or brace.

"I do not bend the knee to walk — I swing the whole leg out from my hip, and my hip and back pay for it every step."

Photograph of a person in a restaurant booth unable to fit, the stiff straight leg extended out into the aisle

Explain that you cannot sit or drive normally

A leg that will not bend does not fit in a car footwell, a theater row, a plane seat, or a restaurant booth. This is the daily functional loss that supports loss-of-use and unemployability — the leg is not just painful, it is in the way of ordinary life. Spell out the specific things you can no longer do.

Give concrete examples: which car you can no longer drive, which seats you cannot use, how you get into a vehicle now.

"I cannot sit in a normal seat — the leg has to go straight out into the aisle, and I cannot work the pedals to drive."

Photograph of a person sitting and looking down at a surgically scarred knee that stays straight and will not bend

Report the constant hip and low-back pain from compensating

A fused knee forces the hip to circumduct, tilts the pelvis, and torques the lumbar spine on every stride. Under 38 CFR §3.310(a) those are disabilities proximately due to the service-connected knee. In a fusion case the secondaries are not speculative — they are mechanically inevitable, and they are each their own separate rating.

Name every joint that now hurts — the hip, the low back, the opposite knee — and ask that each be examined and noted.

"My hip and my lower back hurt every single day now because of how I am forced to walk on a leg that will not bend."

Secondary conditions to raise in the same appointment

Photograph of a person struggling to get into a car because the fused leg will not bend to fit in the seat

The work it takes away — this is a TDIU case

A leg that cannot bend rules out most physical trades outright and a great deal of sedentary work too — you cannot stand a shift, cannot sit at a normal workstation, cannot drive for a living. 38 CFR §4.16 requires that a total rating for individual unemployability be considered whenever the record raises it, and a knee fusion raises it on its face. Where the schedular rating sits below 100%, TDIU is the path to full compensation.

Photograph of an older person steadying themselves with a cane and one hand on a hallway wall, one leg held rigid

The falls and the loss of balance

A rigid leg cannot make the small corrections a normal knee makes over uneven ground, so a fused knee is a fall risk — curbs, stairs, wet floors, and slopes all become hazards. Falls cause new injuries that are themselves secondary to the service-connected knee under §3.310(a). Document every stumble and every near-fall, and note the cane, walker, or wall you now depend on.

Photograph of a person standing with a hand pressed to their lower back and hip from the strain of walking on a fused leg, wearing a knee brace

The spread to the hip, the spine, and the other leg

Everything above and below a fused knee overloads. The hip circumducts, the pelvis tilts, the lumbar spine torques, and the opposite leg carries the load the fused side cannot. §3.310(a) covers disability proximately due to the service-connected knee and §3.310(b) covers aggravation of anything pre-existing. Contralateral knee, hip, and lumbar claims off a fused knee are standard and provable — each its own rating.

How to prepare for this specific exam

  • Bring the operative report from the fusion — the surgical indication is nexus evidence.
  • Bring imaging confirming the fusion and the angle.
  • Document standing tolerance, walking distance, and stair capability in writing.
  • List the jobs you can no longer perform, and why, for the TDIU question.
  • Note every secondary problem — hip, back, opposite knee — and ask that they be examined.
  • Photograph the fixed position of the leg standing and lying down.

04The Protocol

What procedures are required during the exam

These are not courtesies. Each comes out of the regulation or out of binding case law. Take this list in with you and tick them off as they happen.

Photograph of a clinician holding a goniometer against a patient's straight fused leg to record the fixed angle
Fig. 01Goniometric measurement of the fixed angle — the whole rating

01Goniometric measurement of the fixed angle — the whole rating

38 C.F.R. §4.71a

The examiner places a goniometer against the fused leg and records the fixed angle in degrees against neutral 0-degree extension. There is no range of motion to test — this single measurement is the entire rating. Zero to 10 degrees rates 30%; 10 to 20 rates 40%; 20 to 45 rates 50%; 45 or more rates 60%.

The difference between 30% and 60% is this one number. A report that omits the angle is inadequate under §4.2 and cannot lawfully be rated above the minimum tier — read it when it comes back and demand a new exam if the number is missing.

A clean knee X-ray showing a solidly bone-fused knee joint with no visible joint space
Fig. 02Imaging to confirm bony versus fibrous fusion

02Imaging to confirm bony versus fibrous fusion

38 C.F.R. §4.71a

X-ray or CT confirms whether the fusion is solid bony union or fibrous ankylosis with a trace of painful movement. Both rate under 5256, but the distinction matters for future worsening and for establishing that the joint is truly ankylosed rather than merely stiff.

Imaging is the objective proof the joint is fused. Without it, the VA can recharacterize the claim as limitation of motion and rate it far lower under 5260/5261.

Photograph of an examiner gently attempting to move a supine patient's rigid knee that does not move
Fig. 03Attempted passive motion — documenting zero movement

03Attempted passive motion — documenting zero movement

38 C.F.R. §4.71a

The examiner gently attempts to move the joint through flexion and extension and documents that no usable motion occurs in any direction. This is what separates ankylosis from severe limitation of motion, and it is the finding that opens the highest-paying knee code.

A recorded attempt at passive motion that produces nothing is the clinical proof of ankylosis. "Fused" stated without a documented attempt invites the rater to treat it as ordinary stiffness.

Photograph of an examiner observing a patient walking with a stiff-legged gait across an exam room
Fig. 04Observed gait and functional tolerance

04Observed gait and functional tolerance

38 C.F.R. §4.71a

The examiner watches you walk a real distance and records the stiff-legged, hip-swinging gait, your standing tolerance, walking distance, stair capability, and ability to drive. This is the evidence that supports special monthly compensation for loss of use under §3.350 and unemployability under §4.16 — both of which sit above the schedular rating.

The functional picture is what carries a fusion case past the schedule into loss-of-use and TDIU. A table-only exam that never watches you walk misses the most valuable evidence in the claim.

Clinical photograph of an examiner using a tape measure to record the circumference of a patient's thigh above the knee
Fig. 05Bilateral thigh-circumference measurement — documenting disuse atrophy

05Bilateral thigh-circumference measurement — documenting disuse atrophy

38 C.F.R. §4.71a

The examiner measures the circumference of both thighs at the same point above the kneecap and records the difference. A leg locked by fusion loses muscle bulk over time, and a measured atrophy on the fused side is objective proof of the disability's real functional cost — evidence that supports loss of use under §3.350 and the extraschedular and TDIU arguments that sit above the schedule.

A measured wasting of the thigh is hard corroboration that the fused leg carries little load. Without the two numbers side by side, the atrophy is only your word — with them, it is a clinical finding.

05The Standard

What makes an exam adequate

Read your exam report against these. An exam that fails the standard is legally inadequate, and an inadequate exam is something you challenge rather than accept.

01

The range of motion has to be MEASURED, not estimated

38 CFR §4.46 states that the use of a goniometer in the measurement of limitation of motion is indispensable in examinations conducted within the Department of Veterans Affairs. An examiner who eyeballs your bend and writes a number has not complied with the regulation. This is the most common defect in a spine exam and it is the easiest one to spot from the chair.

02

Joints must be tested in every required condition

Under Correia v. McDonald, a joint examination for pain must, wherever possible, record active motion, passive motion, motion in weight-bearing and motion in non-weight-bearing — and where relevant, the range of the opposite undamaged joint. An exam that records one set of numbers and stops is incomplete on its face, and that incompleteness is grounds to challenge it.

03

Flare-ups have to be addressed, not dodged

Under Sharp v. Shulkin, when a veteran describes flare-ups, the examiner is obligated to estimate the additional loss of motion during a flare based on all the available evidence — including your own account of it. "I cannot opine without resorting to mere speculation" is not automatically acceptable; the examiner has to have actually sought the information first and explained why an estimate is impossible.

04

Repetitive use and functional loss must be factored in

Sections 4.40 and 4.45, and the DeLuca line of cases, require that pain, weakness, fatigability, incoordination and lack of endurance after repeated use be considered — and expressed in additional degrees of lost motion where that is feasible. Your rating is supposed to reflect what you can do on the fifth repetition and on a bad day, not just the first careful bend of the morning.

05

Neurological findings must be separately documented

Note (1) to the General Rating Formula requires that any associated objective neurologic abnormality be evaluated separately under an appropriate diagnostic code. If your leg symptoms were mentioned in the narrative but never tested and never assigned, the exam did not do what the schedule requires of it.

06

The examiner must review the record when the question requires it

Where a medical opinion on cause, aggravation or a secondary relationship was requested, the examiner is expected to review the relevant evidence and give a reasoned explanation. A bare conclusion — "less likely than not related to service" with no reasoning attached — carries little weight, and an opinion with no rationale is challengeable.

07

The examiner has to be qualified for the body system

The VA may use its own clinicians or a contract vendor. Either way, the examiner is expected to have the competence to evaluate the system being examined. If a spinal exam with a neurological component was performed by someone who never tested a reflex, that is a problem worth raising.

08

The exam has to be CURRENT

A rating is supposed to reflect your condition now. An exam performed before a documented worsening, or years before the decision, may not support the current evaluation — and you can request a new one on that basis.

06Afterward

What happens after your exam is complete

The examiner writes the report and submits it, it is reviewed for completeness, and only then does the claim move toward a rating decision. Here is what actually controls the clock.

Examiner at a desk completing and submitting the exam questionnaire
01

The examiner writes and submits the report

Days 1–5 after the exam

The examiner compiles the history, the physical findings, the measurements and any testing into the questionnaire, adds any requested medical opinion, and submits it. Contract vendors typically have a turnaround requirement measured in days, not weeks.

Nothing about your claim moves while this is happening, and nothing you do speeds it up. What matters is that the report is written from notes taken in the room — which is exactly why what you said, and how the examiner recorded it, is already locked in by the time you get to your car. Request your copy now rather than later.

Reviewer flagging an incomplete field and sending the exam report back to the examiner
02

Quality review — and the request for clarification

Days 3–30

The report is reviewed for completeness. If it is internally inconsistent, missing a required field or missing the opinion the VA asked for, it goes back for correction or a second opinion. This is the single most common cause of a claim appearing to stall after the exam.

Understand what a finished exam actually means: it means the appointment happened, not that your claim is ready for a decision. If the reviewer finds a blank range-of-motion field, an opinion that does not answer the question that was asked, or findings that contradict each other, the file goes back out for more information. That is a normal quality control step, not a rejection of your claim, and it is not a sign that you did something wrong — but it does add weeks, and it is the reason so much of what you read online sounds like the system is broken.

Claim status tracker on a screen showing the progress bar jumped backward from a late step to an early step
03

Your status tracker moves backward — and it is usually not bad news

Any time after the exam

The online tracker shows eight steps. Veterans watch it reach step 7 or 8, then find it back at step 3 or 4 a week later. That regression almost always means one thing: the file went back for additional information, most often a returned or clarified exam.

This is the number one thing veterans panic about, and it is misread constantly. The tracker is not a countdown — it is a location marker. When the VA decides it needs one more piece of evidence, a corrected exam, a clarifying medical opinion or an outstanding record, the claim is routed back to the evidence gathering step and the bar redraws itself where the file physically is. It does not mean a denial. It does not mean your case was thrown out or restarted. It does not erase anything already in the file, and it does not change your effective date. What it does mean is that something in the record was not good enough to decide on yet — which is worth knowing, because if the weak link is the exam, this is the window where a corrective statement or a private opinion from your own doctor does the most good.

Medical records folders being handed across a counter as the evidence gathering window closes
04

Evidence gathering closes

Varies

Before anyone rates your claim, the file has to be built. This is the stretch where the Regional Office pulls together everything the decision will rest on: your service treatment records, your VA medical records, any federal records, the C&P exam report, and any private records it has requested on your behalf. The claim sits here until the VA is satisfied the record is complete enough to decide — which is exactly why a status tracker can appear to stall or slide backward at this step. You are not powerless while it sits here. Anything you put into the file yourself lands the day you send it, and every relevant record you add now is one less thing the rater can later say was missing.

A VA request to a private provider is a letter that may or may not be answered, and the VA will wait on it for weeks before moving on — sometimes without ever getting a response. A record you walk in yourself, or upload through your claim, is in the file the day you send it. So do not sit and wait to be asked. If you know a treatment record, an imaging report, a surgical note or a buddy statement exists and it matters, send it now, with a VA Form 21-4138 statement that explains in plain words what the document is and what it shows. This is also the window where a corrective statement or a private medical opinion from your own doctor does the most good — before the rater has locked in a decision, not after. Once the evidence gathering step closes, the file goes to a rating specialist, and your chance to shape the record cheaply and quickly closes with it.

Rating specialist applying the rating schedule to a file and producing the decision letter
05

Rating decision and promulgation

Typically several weeks after the last piece of evidence lands

This is the stage where your evidence finally becomes a number. A rating specialist — not the examiner, and not a doctor — takes everything in the file and applies the rating schedule to it: the exam findings, your range-of-motion measurements, your lay statements, your private records and any medical opinions. They assign a diagnostic code to each condition, pull a percentage from the schedule, set your effective date, and either grant, deny or defer each issue. The decision is then reviewed and authorized — promulgation is simply the VA’s word for making it official — and the decision letter and code sheet are generated and mailed. Where an award is made, payment follows the effective date rules, and back pay is calculated to that date.

Read the code sheet, not just the percentage. It names the diagnostic code used, the exact measurements relied on and the effective date assigned — and that is where most mistakes live. This is a human being reading a file under a production quota, and the two things that go wrong most often are a rater using the pre-repetition range-of-motion numbers instead of the worst-case figures §4.59 and §4.40 require, and a claimed condition being decided on a thin record or quietly left out. Check whether painful motion was accounted for, whether your radiculopathy was rated separately under Note (1) or folded into the spine rating, and whether every condition you claimed was actually addressed. A decision you do not read is a decision you cannot challenge — and the deadline to challenge it starts the day the letter is dated, not the day you understand it.

Opened rating decision letter with a magnifying glass over the reasons for decision section
06

C&P examination is the decision letter

The day it lands in your mailbox

The envelope holds two different documents: the narrative decision letter, and the code sheet. Together they are the single most important piece of paper in your claim, because every deadline, every appeal option and every dollar of back pay is set by what is printed on them — not by what you were told at the exam.

Most veterans read one thing on that letter: the percentage. Then they either celebrate it or get angry at it, and file it in a drawer. That is the mistake. The percentage is the conclusion; the reasons section is the reasoning, and the reasoning is what you attack. It tells you which diagnostic code the rater used, which range-of-motion figures they relied on and which they ignored, whether painful motion under §4.59 was accounted for, whether your neurological findings were rated separately under Note (1) or folded into the spine rating, which conditions were decided, which were deferred, and which were never addressed at all. It also assigns your effective date, which controls back pay. A rating that looks low is very often not a disagreement about how bad your neck is — it is a rater who used the pre-repetition numbers, or missed the radiculopathy, or rated one side and not both. You cannot see any of that from the percentage. Do not go by the percentage alone, and do not decode it by yourself if you are not sure what you are looking at — have someone who reads these for a living read it with you before the clock runs out. You have one year from the date on that letter to file a Higher-Level Review (VA Form 20-0996), a Supplemental Claim (VA Form 20-0995) or a Board appeal, and the deadline runs from the date printed on the letter, not the date you opened it. Bring it to this office and we will go through it line by line, at no cost, and tell you plainly whether it is right.

What normal looks like: 30 to 60 days for a simple claim, longer for a complex one

After your exam you should expect some kind of notification from the VA — a decision, a request for more information, or a notice that another exam has been scheduled. For a straightforward, single-issue claim that often lands within 30 to 60 days. But 30 to 60 days is a rough guide, not a rule, and it is not a ceiling. A claim with several conditions, a toxic-exposure or presumptive question, a returned exam, or missing records routinely takes 90 days or more, and that alone does not mean anything is wrong — the more moving parts your case has, the longer the VA takes to work it. Inside the window that is normal for a case like yours, silence is expected and there is nothing to fix, and a tracker that jumps backward is normal too.

What matters is not a fixed number of days — it is whether the claim is still moving and whether you can get a straight answer about where it is. Once you are well past what is normal for a case like yours and the VA either goes silent or cannot tell you what the claim is waiting on, stop waiting. That is usually where the real trouble hides — an exam that came back twice, a records request that was never answered, a claimed condition that got dropped, or a file sitting in the wrong queue. Call the VA at 800-827-1000, ask specifically what the claim is waiting on and who it is assigned to, and write down the answer. If you cannot get a straight answer, or the answer tells you the exam is the problem, that is the moment to bring it to this office rather than sitting on it for another three months. Problems raised early get fixed inside the claim. Problems discovered in a denial letter get fixed on appeal, and that costs you a year.

Other things that control the clock

Six things decide how long you wait, and none of them are visible from the tracker alone.

VA claim status page on a monitor showing an average days to complete figure with a trend line that changes month to month
01

The average is a moving number

Check it at the source, not second-hand

The VA publishes an average days-to-complete figure for disability claims that moves month to month; check the current number on the VA’s own claim status page rather than relying on any second-hand figure. In practice, most veterans see a decision somewhere between roughly three and eight months from the date the claim was filed, with the exam usually falling in the middle of that window.

Process pipeline showing the exam marked complete at the start followed by evidence gathering, rating decision and authorization still ahead
02

The exam is not the last step

Three stages still sit in front of you

The exam is not the last step. The clock does not start at the exam and it does not stop there either — the claim still has to clear evidence gathering, the rating decision and authorization.

Exam report stamped returned for clarification beside a claim tracker whose progress bar is moving backward
03

A returned exam is the invisible delay

The reason a tracker slides backward

A returned or clarified exam is the most common invisible delay, and it is why a tracker can slide backward. Expect some contact from the VA within 30 to 60 days of the exam. Past 60 days with nothing at all, call and ask specifically what the claim is waiting on.

Calendar with days 30 through 60 shaded as the normal window and everything past day 60 shaded red beside the VA benefits phone number
04

30 to 60 days is a guide, not a deadline

A complex case can take 90 days or more

Thirty to sixty days is a rough average for a simple, single-issue claim — not a hard rule and not a ceiling. A claim with several conditions, a presumptive or toxic-exposure question, a returned exam, or missing records can easily take 90 days or more, and that alone does not mean anything is wrong. Watch whether the claim is still moving, not the calendar. Only when it stalls well past what is normal for a case like yours, and no one can tell you what it is waiting on, should you stop waiting — call 800-827-1000 and ask what the claim is waiting on and who it is assigned to.

Three ways to track a claim shown side by side: the VA.gov claim status page, the VA Health and Benefits mobile app, and the benefits telephone line
05

Watch your status yourself — in one of three places

Weekly, not daily

Check your own status in one of three places: your VA.gov claim status page, the VA Health and Benefits mobile app, or by calling 800-827-1000. Check it weekly, not daily. And understand exactly what a status check can tell you: if a decision is posted in your account, it is live; if it is not posted, it is not ready. That is the whole rule. This is not something your representative or your attorney can speed up — we see the same thing you see, at the same time, and calling us to ask does not move it. Calling the VA to ask for an update does not move it either. Watch it yourself, weekly, and the moment a decision posts, bring it to us.

Flat infographic of a VA rating decision letter held beside a calendar stamped ONE YEAR TO APPEAL, with the three appeal lanes — Higher-Level Review, Supplemental Claim and Board Appeal — labeled below
06

Your decision letter arrives — read it, then start the appeal clock

What to do the day it lands in your mailbox

The decision letter is the finish line of the claim and the starting line of the appeal — and the moment it arrives, a one-year clock starts running. Read it the same day. Find the combined rating, the percentage assigned to each condition, and the effective date, because the effective date controls how far back your back pay reaches. Then request a copy of your C&P exam report so you can see whether the rater used your real range-of-motion numbers or ignored the radiculopathy. If any part of the decision is wrong — a low rating, a denied condition, or a bad effective date — you have three appeal lanes, and you must choose one within one year of the date printed on the letter: a **Higher-Level Review (VA Form 20-0996)**, where a senior reviewer re-decides on the same evidence; a **Supplemental Claim (VA Form 20-0995)**, when you have new and relevant evidence such as a private DBQ or your own range-of-motion exam; or a **Board Appeal (VA Form 10182)** to a Veterans Law Judge. Miss that one-year deadline and the decision becomes final. You can still file again later, but you lose the original effective date — and that lost time is lost back pay you never get back. Bring the letter to this office before the year runs out and we will read it with you, line by line, at no cost.

07Remedy

How to report a bad exam

Where this exam goes wrong

The report that says "knee is ankylosed, no range of motion" and stops there is the trap. With no angle in the record, the rater has nothing to justify anything above the **30%** minimum, and a veteran fused at 40 degrees loses 20 percentage points to a missing sentence. Read the exam report when it comes back; if the angle is not in it, that exam is inadequate under **38 CFR §4.2** and a new one can be demanded.

Flat infographic of a hand writing exam notes on a notepad inside a car with a clock recording the time
01

Write it down the moment you get to your car

Date, start time, end time, the examiner’s name and credentials, the vendor, every test that was performed, and every test that was not. A contemporaneous note written the same day is evidence. A memory reconstructed four months later is not.

Flat infographic of a C&P exam report and a DBQ questionnaire being requested through VA.gov and by phone
02

Get the exam report and the questionnaire

Request a copy through VA.gov, through a written request to the Regional Office, or by calling 800-827-1000. You cannot challenge what you have not read. Compare it line by line against what actually happened in the room.

Flat infographic of a magnifying glass over a document with a defect circled in red and a regulation citation tag
03

Name the defect specifically, with the citation

Never write "the exam was unfair." Write "no goniometer was used, contrary to 38 CFR §4.46" or "flare-ups were reported and not addressed, contrary to Sharp v. Shulkin" or "repetitive use testing was not performed, contrary to 38 CFR §4.40 and DeLuca." A specific, citable defect is what forces action.

Flat infographic of VA Form 21-4138 Statement in Support of Claim being submitted with an upload arrow
04

Submit a statement asking for a new examination

VA Form 21-4138, Statement in Support of Claim, filed through VA.gov or mailed to the Evidence Intake Center. State the defect, cite the authority, and request a new or supplemental examination. Do this BEFORE the decision if the claim is still open — it is far easier than undoing a decision afterward.

Flat infographic of two separate tracks, one labeled Patient Advocate for conduct and one labeled Exam Adequacy
05

Report examiner conduct separately

If the problem is behavior rather than methodology — you were rushed out, dismissed, never touched, or treated with hostility — file a complaint with the VA facility’s Patient Advocate, or with the vendor directly for a contract exam, and copy the Regional Office. Conduct complaints and adequacy challenges are two different tracks and you can run both.

Flat infographic of a signpost forking between Higher-Level Review 20-0996 and Supplemental Claim 20-0995
06

If a decision has already issued, pick the right lane

A Higher-Level Review (VA Form 20-0996) argues the VA erred on the evidence it had — the right vehicle when the exam was inadequate on its face. A Supplemental Claim (VA Form 20-0995) is the vehicle when you are adding new and relevant evidence, such as your own private range-of-motion examination or a completed DBQ from your treating provider.

Flat infographic of a goniometer measuring a joint angle beside a completed DBQ showing range-of-motion degrees
07

Put your own measurements on the table

A private examination with full goniometric measurements, or a DBQ completed by your own provider, creates a conflict in the evidence that the VA has to resolve — and under 38 CFR §3.102 reasonable doubt is resolved in your favor.

End of clinical section

Knee Ankylosis — DC 5256

See It Before You Sit In The Room

Joint Arthrodesis (Fusion) — Everything You Need To Know

Dr. Nabil Ebraheim

Measuring Joint Range of Motion: Goniometry

Dr Cailbhe Doherty

The Questions Veterans Actually Ask

Knee Ankylosis Claims — Frequently Asked Questions

Straight answers to the questions that decide knee ankylosis claims — the ratings, the separate evaluations, and the exam mistakes that cost veterans money.

Knee Ankylosis is evaluated under DC 5256. The scale runs across 4 rating levels, and the highest is 30%, which the VA assigns for: favorable angle in full extension, or in slight flexion between 0 and 10 degrees. Where your evaluation actually lands depends on how your exam and records document those criteria — not on how bad the condition feels on an average day.

Open A Channel

Three Ways to Put an Accredited Agent on Your Case

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