Skip to main content
Estimate

These guides are AI-generated educational summaries — not legal or medical advice.

C&P Exam Prep: Knee and Lower Leg

DC 5257 musculoskeletal 38 CFR 4.71a

DBQ Overview

Interview + Physical
Form Name
Knee_and_Lower_Leg
Form Code
Knee_and_Lower_Leg
Page Count
14
Examiner Type
Physician or Physician Assistant
Estimated Duration
30-45 minutes
Exam Format
Interview + Physical

What to Expect During Your Exam

Exam Overview

To document the nature, severity, and functional impact of knee and lower leg conditions for VA disability rating purposes under 38 CFR 4.71a DC 5257 (other impairment of knee including recurrent subluxation, lateral instability, and patellar instability).

What the examiner evaluates:

  • Diagnosis and side affected (right, left, or bilateral)
  • Active and passive range of motion (flexion and extension) with goniometer
  • Pain on motion and at rest
  • Instability type and severity (lateral, anterior-posterior, rotational, patellar)
  • Functional loss due to pain, weakness, fatigability, and incoordination
  • Flare-up frequency, duration, and severity
  • Repetitive-use testing and post-repetitive ROM changes
  • Joint effusion, locking, crepitus, and swelling
  • Surgical history (meniscectomy, ligament repair, total knee replacement, resurfacing)
  • Assistive device use (cane, crutches, walker, brace, wheelchair)
  • Leg length discrepancy
  • Muscle atrophy of disuse
  • Functional limitations in sitting, standing, locomotion
  • Evidence of ankylosis
  • Impact on occupation and daily activities

Exam is typically conducted in person at a VA facility or contracted QTC/LHI/VES clinic. You have the right to request the exam be recorded in most states. Bring your brace or assistive device to the exam. Wear shorts or loose-fitting pants to allow full access to the knee.

Typical duration: 30-45 minutes

Knee Flexion (Active and Passive)

Degrees of bending motion from full extension (0-) toward the buttock. Normal is 0-140-.

What to expect:

The examiner will have you bend your knee as far as possible while seated or lying down. They will measure the angle with a goniometer. Passive testing means the examiner moves your leg for you. Both weight-bearing and non-weight-bearing positions may be tested per Correia requirements.

Key thresholds:

  • Limited to 45- — Potentially 30% under DC 5260 (limitation of flexion)
  • Limited to 60- — Potentially 20% under DC 5260
  • Limited to 90- — Potentially 10% under DC 5260
  • Limited to 100- or less — Potentially 0% but supports functional loss narrative

Tips:

  • Move only as far as your pain allows - do not push through pain to appear cooperative
  • Report the exact degree at which pain begins, not just where motion stops
  • Tell the examiner if bending is worse after activity or later in the day
  • If you use a brace, note whether it helps or limits motion

Pain considerations: Under DeLuca v. Brown, the examiner must document pain on motion, pain with weight bearing, and whether pain causes functional loss. Tell the examiner: 'I feel sharp pain at approximately [X] degrees of flexion.' If your knee is worse after walking or repeated movement, say so explicitly.

Knee Extension (Active and Passive)

Degrees of straightening motion. Normal is 0- (full extension). Limitation of extension is rated under DC 5261.

What to expect:

You will be asked to straighten your knee fully. The examiner notes any extensor lag or flexion contracture (inability to fully extend). They will also test passive extension.

Key thresholds:

  • Flexion contracture of 45- (cannot straighten past 45-) — Potentially 50% under DC 5261
  • Flexion contracture of 30- — Potentially 40% under DC 5261
  • Flexion contracture of 20- — Potentially 30% under DC 5261
  • Flexion contracture of 15- — Potentially 20% under DC 5261
  • Flexion contracture of 10- — Potentially 10% under DC 5261

Tips:

  • If you cannot fully straighten your knee, do not force it - stop at the natural end point
  • Tell the examiner if straightening causes pain or a feeling of the knee giving way
  • Note if extension worsens after prolonged sitting or upon waking

Pain considerations: Pain preventing full extension is a ratable finding. Clearly state: 'I cannot fully straighten my knee without pain, and it stops at approximately [X] degrees.'

Instability Testing (Lateral, Anterior-Posterior, Patellar)

The degree to which the knee joint moves beyond normal limits in medial-lateral, anterior-posterior, or patellar directions. DC 5257 specifically addresses other impairment including instability.

What to expect:

The examiner will apply stress to your knee in various directions while stabilizing your leg. Anterior drawer, posterior drawer, varus/valgus stress tests, and patellar grind/apprehension tests may be performed. The examiner will document mild, moderate, or severe instability.

Key thresholds:

  • Severe instability (marked laxity) — 30% under DC 5257
  • Moderate instability — 20% under DC 5257
  • Mild instability — 10% under DC 5257

Tips:

  • Describe how often your knee 'gives way' and under what circumstances
  • Mention specific activities that cause giving-way episodes (stairs, uneven terrain, pivoting)
  • Tell the examiner if you have fallen or nearly fallen due to instability
  • If you wear a brace specifically for instability, bring it and explain why it was prescribed

Pain considerations: Instability accompanied by pain is more significant than painless laxity. Say: 'My knee gives way approximately [X] times per week/month, often causing pain rated [X/10], and I have fallen [X] times in the past year.'

Repetitive Use Testing (DeLuca)

Whether ROM worsens after repeated movement, reflecting the functional reality of daily activities. This is legally required under DeLuca v. Brown (1995) and Correia v. McDonald (2016).

What to expect:

The examiner may ask you to flex and extend the knee multiple times, then re-measure ROM. You may be asked to walk. The examiner must document whether ROM decreases or pain increases with repeated use.

Key thresholds:

  • Measurable ROM decrease after repetition — Supports higher rating through functional loss documentation
  • Increased pain with repeated use — Supports DeLuca functional loss finding

Tips:

  • If the examiner does not perform repetitive use testing, politely state: 'I would like my range of motion tested after repeated use as my knee worsens significantly with activity'
  • After any movement testing, report whether pain has increased compared to the start of the exam
  • Describe your typical day and how the knee deteriorates as the day goes on

Pain considerations: You must communicate: 'After walking for [X] minutes my knee swells and range of motion decreases significantly compared to when I started. My pain increases from [X/10] to [X/10].'

Weight-Bearing vs. Non-Weight-Bearing ROM (Correia)

Per Correia v. McDonald (2016), ROM must be tested in weight-bearing and non-weight-bearing positions when applicable for the knee. This captures functional limitations during actual use.

What to expect:

The examiner may measure flexion while you are standing (weight-bearing) and again while seated or lying down (non-weight-bearing). Differences between these measurements are clinically significant.

Key thresholds:

  • Significant ROM reduction in weight-bearing vs. non-weight-bearing — Reflects real-world functional loss; supports higher rating

Tips:

  • Tell the examiner if your knee is significantly more painful or limited when bearing weight
  • Describe activities requiring weight-bearing such as climbing stairs, walking on inclines, or rising from a chair

Pain considerations: State specifically: 'When I put weight on my knee I can only bend it to approximately [X] degrees before the pain stops me, but lying down I can reach [X] degrees.'

Joint Effusion and Swelling Assessment

Presence of fluid accumulation in the knee joint. Frequent episodes of joint effusion are specifically ratable findings on the DBQ.

What to expect:

The examiner will visually inspect and palpate your knee for swelling, warmth, and ballottement of the patella (fluid test). They will ask about frequency of swelling episodes.

Key thresholds:

  • Frequent episodes of joint effusion documented — Specifically checked on DBQ and contributes to 5257 rating

Tips:

  • Keep a log of effusion episodes including dates, triggers, duration, and how you managed them
  • Mention if swelling requires draining (aspiration) or has required medical visits
  • Note if swelling interferes with bending the knee or wearing normal footwear

Pain considerations: Effusion causes both pain and functional limitation. Say: 'My knee swells approximately [X] times per month. The swelling makes it impossible to fully bend my knee and causes an aching pressure pain rated [X/10].'

Muscle Circumference / Atrophy Measurement

Thigh or calf circumference compared bilaterally to assess disuse atrophy. Atrophy indicates chronic functional limitation and reduced use of the limb.

What to expect:

The examiner uses a tape measure at a specified anatomical landmark above or below the knee on both legs and records the difference in centimeters.

Key thresholds:

  • Measurable circumference difference between limbs — Supports functional loss and chronic disuse findings

Tips:

  • If you have been limping or favoring the affected leg, mention it explicitly
  • Mention any physical therapy prescribed specifically to rebuild muscle around the knee
  • Note how long you have been compensating or avoiding use of the affected knee

Pain considerations: Atrophy is objective evidence of chronic pain and avoidance. State: 'I have been unable to use my [right/left] knee normally for [X] years, causing noticeable muscle loss compared to my other leg.'

Estimate

Rating Criteria Breakdown

30% Severe instability: marked laxity on clinical examination co ...

Severe instability: marked laxity on clinical examination consistent with significant ligamentous disruption or patellar instability with objective findings. Under DC 5257 for other impairment of the knee.

Key Symptoms

  • Marked lateral or medial instability with stress testing
  • Frequent giving-way episodes causing falls or near-falls
  • Severe patellar instability with recurrent dislocation
  • Marked anterior or posterior laxity (ACL/PCL involvement)
  • Severe functional limitation of gait and daily activities
  • May require use of assistive devices or bracing to ambulate safely

CFR: DC 5257 provides ratings of 30, 20, and 10 percent based on the severity of instability. At 30%, the impairment is characterized by severe instability with marked objective findings on examination.

20% Moderate instability: moderate laxity on clinical examinatio ...

Moderate instability: moderate laxity on clinical examination with functional limitation. Includes moderate patellar instability or recurrent subluxation with objective findings.

Key Symptoms

  • Moderate lateral or medial laxity on stress testing
  • Recurrent giving-way episodes without falling
  • Moderate patellar instability or subluxation
  • Pain with weight-bearing activities limiting distance walked
  • Swelling occurring multiple times per month
  • Requires brace or assistive device for certain activities

CFR: DC 5257 at 20% reflects moderate impairment. This level requires objective findings of instability that significantly impair the veteran's ability to perform physical activities.

10% Mild instability: mild laxity on clinical examination with s ...

Mild instability: mild laxity on clinical examination with some functional limitation. Minimum compensable rating for knee instability under DC 5257.

Key Symptoms

  • Mild laxity on stress testing
  • Occasional giving-way without significant functional limitation
  • Mild patellar instability without frequent dislocation
  • Pain with prolonged or strenuous activity
  • Some limitation in recreational activities
  • May use brace intermittently for demanding activities

CFR: DC 5257 at 10% is the minimum compensable evaluation for other impairment of the knee. Objective findings of at least mild instability must be present.

0% No compensable impairment found, or impairment below the min ...

No compensable impairment found, or impairment below the minimum threshold for a 10% rating. The condition may be service-connected at 0% (noncompensable) if a current diagnosis exists with a service nexus.

Key Symptoms

  • Minimal or no objective instability on examination
  • Subjective complaints without objective findings
  • ROM within normal limits with no significant pain
  • No functional limitation on examination day

CFR: A 0% rating establishes service connection and creates a record for future increases if the condition worsens. It also allows for secondary condition claims.

How to Describe Your Symptoms

Pain

How to describe:

Describe pain using a 0-10 scale, specifying location (medial, lateral, anterior, posterior, behind kneecap), character (sharp, aching, burning, throbbing), and triggers (walking, stairs, bending, prolonged sitting, standing, weather changes). Distinguish between baseline daily pain and worst-day pain.

Worst-day example:

“On my worst days, I have constant sharp pain rated 8/10 across the front and inner side of my right knee. I cannot stand for more than 5 minutes, climbing a single step causes stabbing pain, and I need to sit with my leg elevated most of the day. Over-the-counter medications provide minimal relief and I have to plan my entire day around knee pain.”

What the examiner listens for:

Specific pain location and character, relationship of pain to activity or rest, how pain limits specific activities, whether pain wakes the veteran at night, and whether pain is constant or episodic.

Understatements to avoid:

Saying 'my knee hurts sometimes' or 'it's not that bad.' Avoid minimizing by saying you 'manage' or 'push through' pain - this conceals the true burden. Do not say the pain is a 3/10 if on average it is a 6/10 during activities.

Instability and Giving Way

How to describe:

Describe how often your knee buckles or gives way, specific triggers (pivoting, uneven ground, descending stairs, stepping off a curb), whether you have fallen, and how you compensate (avoiding activities, using a brace, holding railings, shortening stride).

Worst-day example:

“My knee gave way three times last week. Twice going down stairs I had to grab the railing to avoid falling. Once it buckled completely while I was walking across a parking lot on flat ground and I fell, bruising my hand. I now avoid stairs when possible and refuse to walk on uneven terrain without my brace.”

What the examiner listens for:

Frequency of giving-way episodes, circumstances that trigger instability, whether instability has caused falls or injuries, compensatory behaviors, and whether a brace was prescribed and how much it helps.

Understatements to avoid:

Saying instability only happens 'occasionally' without quantifying it. Not mentioning falls or near-falls. Failing to describe how instability has changed your activities, social life, or employment.

Swelling and Effusion

How to describe:

Describe how often your knee swells, what it looks like (can you see the swelling, does it feel tight), how long it lasts, what triggers it, and how you treat it (ice, elevation, compression, prescription anti-inflammatories, aspiration procedures).

Worst-day example:

“After working a half-day shift I came home with my knee visibly swollen - it looked like a grapefruit and felt like it was going to burst. I had to keep it elevated all evening and night. I could not bend it more than 30 degrees. I could not get comfortable in any position and did not sleep well. The swelling lasted three days. My orthopedist has drained it twice in the last year.”

What the examiner listens for:

Frequency and duration of effusion, whether it has required medical intervention such as aspiration, objective relationship between activity and swelling, and how effusion limits ROM.

Understatements to avoid:

Saying your knee 'gets a little puffy' instead of describing the full extent. Not mentioning medical visits for swelling management. Minimizing the interference effusion has on sleep, work, and daily function.

Flare-Ups (DeLuca Factor)

How to describe:

A flare-up is a period when your condition is significantly worse than baseline. Describe frequency (how often), duration (how long), severity (pain level, ability to walk, work), triggers (activity, weather, stress), and recovery time.

Worst-day example:

“I have severe flare-ups about twice a month. They last 3-5 days each. During a flare I cannot walk more than 50 feet without stopping, my pain reaches 9/10, I cannot sleep through the night, I cannot drive, and I miss work or cannot perform my job duties. It takes 3-5 days of rest, ice, and prescription anti-inflammatories before I return to my baseline, which is still a 4/10 pain level.”

What the examiner listens for:

The examiner must document flare-up information per M21-1 and DeLuca requirements. They are specifically listening for how much worse you are during a flare compared to baseline and how this limits function.

Understatements to avoid:

Saying you 'don't really have flare-ups' if your condition fluctuates. The exam is a snapshot - if you happen to be having a moderate day, the examiner will only see that. You must proactively describe your worst days and how frequently they occur.

Weakness and Fatigability (DeLuca Factors)

How to describe:

Describe whether your knee feels weak (difficulty bearing weight, difficulty rising from a chair, difficulty climbing stairs), and whether the knee becomes more painful or limited with extended use over time - meaning after 30 minutes of activity it is worse than at the start.

Worst-day example:

“When I try to climb stairs, my right leg feels like it will collapse. I have to lead with my left leg going up and come down one step at a time holding the rail. After walking for about 15 minutes my knee begins to ache more severely and I have to slow down. After 30 minutes it is so painful I must stop and rest. By the end of a normal work day my knee is significantly more limited than in the morning.”

What the examiner listens for:

Whether weakness causes falls or near-falls, how far the veteran can walk before symptoms increase, whether the veteran can perform weight-bearing activities at work or home, and objective evidence of muscle atrophy.

Understatements to avoid:

Not mentioning that your knee gets progressively worse with use. Forgetting to describe specific activities you can no longer do due to weakness (kneeling, squatting, lifting while standing, prolonged walking).

Incoordination and Gait Disturbance (DeLuca Factor)

How to describe:

Describe any abnormal gait pattern (limping, antalgic gait), whether you have difficulty with balance, and whether you avoid certain movements entirely due to fear of falling or pain.

Worst-day example:

“I have a noticeable limp that worsens throughout the day. My coworkers and family frequently comment on it. I cannot walk without consciously planning each step to avoid shifting weight onto my right knee. I cannot run, change direction quickly, or walk on uneven ground without losing my balance. I have started using a cane regularly because I no longer trust my knee to hold me.”

What the examiner listens for:

Antalgic gait, changes in walking pattern, fear-avoidance behaviors, use of assistive devices, and whether gait disturbance is supported by objective findings such as atrophy or reduced ROM.

Understatements to avoid:

Not mentioning an antalgic limp if you have one. Failing to report compensatory movements such as always climbing stairs one step at a time or always parking near the elevator. Not describing the impact of gait disturbance on employment or daily activities.

Common Mistakes to Avoid

Prep Checklist

0/23 complete

Before Your Exam

Day Of

During the Exam

After the Exam

Your Rights During a C&P Exam

  • You have the right to have a knowledgeable representative (VSO, claims agent, attorney) accompany you to the C&P exam.
  • You have the right to know the purpose of the examination and what conditions are being evaluated.
  • You have the right to submit a written statement before or after the exam describing your symptoms, functional limitations, and any concerns about exam adequacy.
  • You have the right to request a copy of your C&P examination report through MyHealtheVet or a records request.
  • You have the right to request a new or supplemental C&P examination if the original exam was inadequate, such as failure to address DeLuca factors, failure to conduct required ROM testing per Correia, or failure to review your claims file.
  • You have the right to record your C&P examination in most states where one-party consent recording laws apply. Verify your state's law prior to the exam.
  • You have the right to appeal a rating decision through Supplemental Claim, Higher-Level Review, or Board of Veterans' Appeals if you believe the rating does not accurately reflect your disability level.
  • You have the right to have all favorable evidence considered under the benefit-of-the-doubt standard (38 CFR 3.102) - when evidence is approximately equal, the decision must go in your favor.
  • You have the right to submit buddy statements (VA Form 21-10210) from family members, coworkers, or friends who can corroborate your functional limitations and symptom severity.
  • You have the right to request that the examiner consider your condition at its worst, not just on the exam day, per M21-1 adjudication guidance.
  • Under Lyles v. Shulkin (2017), you may be entitled to separate ratings for meniscal conditions (DC 5258 or 5259) and other knee impairments (DC 5257, 5260, 5261) - the prohibition on pyramiding does not bar these separate evaluations.

Get Personalized C&P Exam Preparation

Upload your medical records for AI-powered prep that maps YOUR symptoms to the exact DBQ fields your examiner will evaluate.

This C&P exam preparation guide is for educational purposes only and does not constitute legal, medical, or claims advice. Always consult with a qualified Veterans Service Organization (VSO) representative or VA-accredited attorney for guidance specific to your claim. Never exaggerate, minimize, or fabricate symptoms during a C&P examination.