Knee claims may involve limitation of flexion or extension, instability, or degenerative changes. Codes such as 5257, 5260, and 5261 capture different impairment patterns. 5003 and 5010 may apply when degenerative arthritis is documented under schedule rules. 5256 covers ankylosis (fixation) of the knee.
Limitation of motion measurements
The VA often records flexion and extension in degrees. Painful motion, weakness, and fatigue may support functional loss considerations under normal clinical practice rules in the regulations.
Instability and replacements
Severe instability or surgical replacement can map to different diagnostic codes and percentages. Always compare your examination report language to the schedule text.
Related reading
Visit back pain, migraines, and hearing loss. Use /calculator for educational combined ratings.
Rating criteria date
Rating criteria current as of 2026-04-01 (see frontmatter; verify against the live eCFR).
Diagnostic codes on this page
This guide covers 5003, 5010, 5256, 5257, 5260, and 5261. 5257 rates recurrent subluxation or lateral instability on a slight/moderate/severe scale—it is one of the most commonly rated knee codes. 5256 relates to knee ankylosis patterns described in the schedule. 5260 addresses limitation of flexion. 5261 addresses limitation of extension. 5003 and 5010 may apply when degenerative arthritis is present and the schedule’s arthritis rules are used. VA policy allows separate ratings under 5257 (instability) and 5260/5261 (limitation of motion) when the evidence supports both, because they evaluate different impairments. Read 38 CFR 4.71a for the full knee and leg schedule.
How limitation of motion ratings work in plain language
Examiners measure flexion and extension in degrees with a goniometer. They record pain on motion, crepitus, and weakness. The schedule assigns percentages at threshold ranges of motion loss. Functional loss beyond motion may be considered under normal diagnostic procedures when supported. If the knee is painful before reaching full motion, the exam should reflect that pattern honestly.
Instability and recurrent subluxation (DC 5257)
DC 5257 rates recurrent subluxation or lateral instability as 10 percent (slight), 20 percent (moderate), or 30 percent (severe). Importantly, a veteran can receive separate ratings for instability under 5257 and for limitation of motion under 5260 or 5261 when the evidence supports both, because they measure different types of impairment. This is one of the most commonly rated knee code combinations. If your decision references instability language, compare it to DC 5257 specifically.
Degenerative arthritis pathways
5003 and 5010 connect to degenerative arthritis rules in the musculoskeletal system. X ray findings and clinical exam together may determine whether major or minor joint rules apply under the regulation. The knee is a major joint in schedule terms. Imaging alone does not always decide severity; functional loss still matters.
Educational snapshot table for common motion codes
| Code | Educational focus |
|---|---|
| 5257 | Recurrent subluxation or lateral instability: 10% slight, 20% moderate, 30% severe |
| 5260 | Flexion limitation thresholds in degrees per 38 CFR |
| 5261 | Extension limitation, including inability to fully straighten the leg |
| 5256 | Ankylosis of the knee in flexion at specified angles |
| 5003 | Degenerative arthritis context when applicable |
| 5010 | Post traumatic arthritis context when applicable |
Copy the regulation for exact degree cutoffs and wording.
Military activities that show up in knee histories
Road marching, ruck running, parachute landings, kneeling on hard decks, vehicle egress, and repetitive squatting in maintenance work appear often in lay histories. Service treatment records may show acute sprains or surgery. Rating focuses on residuals.
Evidence commonly found in knee files
Orthopedic notes, MRI results, arthroscopy reports, physical therapy logs, injection records, and postoperative range of motion checks all help. Lay statements may describe trouble with stairs, running, or kneeling for prayer or child care.
Compensation and pension knee examination tips
Wear shorts or loose pants. Expect repeated flexion and extension measurements. Mention locking or catching if true. If you use a cane, show how you use it. Compare back pain if lumbar symptoms affect how you move during the knee exam; still answer each joint question clearly.
Bilateral knee issues and bilateral factor math
When both knees are service connected, combined rating math may apply a bilateral factor in addition to combining the two knee percentages. Educational modeling is available at /calculator.
Total knee replacement and temporary ratings
Joint replacement may involve temporary total evaluations under separate regulatory sections during convalescence, then a rating based on residuals such as painful motion or weakness. Follow your decision’s reasoning and the operative report timeline.
Meniscus and ligament repairs
ACL, PCL, MCL, and meniscus surgeries produce specific postoperative courses. Physical therapy notes show progression. Final range of motion may stabilize months after surgery.
Secondary relationships
Altered gait from a knee problem can stress the hip or back pain over years. Medical nexus opinions address secondary service connection. This page does not predict outcomes.
Migraines and lower body fatigue
Fatigue from chronic pain can overlap with headache disorders in daily life. Migraines use DC 8100 separately when service connected.
Hearing loss and unrelated combination
Hearing loss under DC 6100 does not cause knee pain, yet combined ratings still use VA math when both are service connected.
Overweight and knee load
Body weight affects joint load. Clinicians discuss weight management as part of care. Rating follows schedule findings rather than weight alone.
Braces, hinges, and orthotics
Hinged knee braces may appear in records. Examiners note whether the brace was removed for testing per instructions.
Return to running and fitness tests
Some veterans attempt to resume annual fitness tests after surgery. Failure or modification of testing can appear in service or civilian employer records.
Children and floor play
Parents may struggle to kneel on the floor during play. Lay statements describe observed difficulty. They support real life context alongside exam measurements.
Appeals literacy
If the decision cites motion numbers that do not match the exam worksheet, line up the pages. This site does not provide appeal advice.
Research versus regulation
Cartilage regeneration research evolves. VA ratings use schedule criteria and record evidence.
Language access
Non English orthopedic records may need translation for adjudicators.
Aquatic therapy
Pool therapy may improve strength before land based milestones appear in notes.
Job accommodations
Employers may grant stool access or limit ladder work. Accommodation letters illustrate function; they do not replace goniometer data.
Motorcycle and off duty injuries
Post service injuries can complicate etiology questions for new claims. Rating discussions for service connected knee residuals still use schedule measurements.
Gout and pseudogout flares
Crystal arthropathy can inflame knees episodically. Accurate diagnosis affects treatment notes and may affect which schedule path applies if separate from primary knee claim.
Infection after surgery
Septic arthritis or postoperative infection creates urgent care episodes. Those records belong in the timeline when relevant.
Prosthetic alignment issues
After replacement, prosthetic alignment problems may require revision. Revision surgery notes continue the story.
Veterans in law enforcement
Jumping from heights and tactical kneeling loads joints. Duty belts add weight. Employer physical tests may document limits.
Farmers and kneeling crops
Agricultural kneeling and squatting patterns appear in lay statements for rural veterans.
Student athletes after service
Some veterans coach youth sports and pivot on knees frequently. That context can appear in functional descriptions.
Cold weather stiffness
Winter stiffness may show in therapy notes as seasonal variation.
Sleep and pain
Poor sleep amplifies pain perception. Sleep apnea is rated under DC 6847 when separately service connected.
Repeat exams across years
Track degrees over time in a personal table to see trends before appeals or increased rating requests.
Patellofemoral pain and tracking disorders
Anterior knee pain with stairs or prolonged sitting may appear without major ligament tears. Physical therapy often focuses on quadriceps balance and hip strength. Examiners still measure flexion and extension for schedule purposes while noting anterior pain patterns in the report.
Valgus and varus alignment
Knock knee or bow leg alignment can change joint loading. Orthopedic notes may mention alignment when discussing bracing or surgery candidacy. Imaging sometimes measures angles. Those facts support medical planning more than they replace motion testing.
Bone bruises and contusions from blunt trauma
Motor vehicle accidents or blunt strikes can cause bone marrow edema on MRI. Healing timelines vary. Acute phase notes differ from year two residuals.
Workers compensation overlap
Some veterans have state workers compensation claims for knee injuries after service. Records from those cases may be submitted to VA. Each agency applies its own law.
Cycling and low impact training
Bike fit and cadence affect knee comfort. Sports medicine notes may document cycling as tolerated activity during rehab.
Hiking, load carriage, and downhill walking
Downhill walking increases eccentric load on the quadriceps and patellar tendon. Veterans sometimes describe military hikes as onset events. Post service hiking hobbies can aggravate prior injuries.
Knee effusion documentation
Swelling measurements or ultrasound guided drainage notes show inflammatory episodes. Effusion can limit motion during flares.
Corticosteroid injection frequency
Repeated steroid injections carry bone and cartilage risks that clinicians monitor. Injection logs show timing and response.
Hyaluronic acid injections
Viscosupplementation trials appear in osteoarthritis care. Response varies by person. Notes should record pain and motion changes after each injection cycle.
Platelet rich plasma and experimental care
Some clinics offer biologic injections still debated in guidelines. VA may or may not weigh such records heavily depending on credibility and consistency.
Nursing and clinical kneeling careers
Civilian nursing or dental hygiene can require kneeling or sustained half kneel postures. Job descriptions can contextualize functional demands.
Commercial flooring installers
Trades that kneel on concrete daily stress the prepatellar region. Bursitis notes may appear alongside knee motion findings.
Military sexual trauma and delayed orthopedic care
Some veterans delay seeking care for injuries. Mental health barriers belong in trauma informed care discussions. Functional impact may still be documented once care begins.
Pediatric squatting for childcare
Squatting to bathe small children or pick up toys recurs daily. Lay statements may describe limits during those tasks.
Driving clutch leg fatigue
Manual transmission driving loads the left knee repetitively in traffic. That functional note may appear in civilian contexts.
Airline seating and economy leg room
Long flights with limited leg extension may trigger swelling or stiffness for people with knee pathology. Travel context occasionally appears in lay statements.
Military vehicle egress and knee strikes
Door frames, turret rings, and hatch edges cause blunt knee trauma stories. Service records may include line of duty investigations after accidents. Those documents can sit in the claim file next to orthopedic follow up.
Ruck strap pressure and gait changes
Heavy rucks can alter posture and stride. Some veterans develop compensatory hip or ankle issues documented in gait analysis notes. Back pain pages discuss spine loading separately.
Bone spurs and osteophytes on imaging
Radiology reports describe osteophyte formation. The presence of spurs supports degenerative change imaging but does not by itself pick a percentage without exam findings.
Limp duration after injury
How long a limp lasted after acute injury can appear in physical therapy intake forms. Duration supports narrative continuity.
Return to sport clearance letters
Orthopedic surgeons sometimes write return to run or return to sport letters with criteria. Those letters show milestones rather than VA conclusions.
Knee pads and tactical equipment
Kneepads change pressure distribution during breaching drills. Equipment logs rarely decide ratings, yet they explain repeated kneeling tasks in service histories.
Cold weather joint ache
Some veterans report achier knees in cold damp climates. Rheumatology may distinguish inflammatory disease from mechanical pain.
Home stair rails and fall prevention
Home modification notes after knee instability illustrate safety planning. Occupational therapy home assessments occasionally appear in records for severe cases.
Shoe wear patterns and limb length checks
Podiatry notes may comment on uneven shoe wear or leg length discrepancy that affects knee loading. Those details support biomechanical explanations in clinical charts.
Final cross links
Visit back pain, migraines, and hearing loss. Use /calculator for educational combined ratings.
Legal disclaimer
This information is for educational purposes only and is not legal or medical advice. Rating criteria are summarized from publicly available 38 CFR regulations. Consult a Veterans Service Officer (VSO) or VA-accredited attorney for advice on your specific claim.