Hip Pain Secondary to Knee Pain: VA Disability Claim Guide

Overview

Hip problems are a common secondary claim for veterans with a service-connected knee condition. The knee and hip are neighboring joints in the same leg, several muscles cross both, and a knee problem that changes how you walk changes how the hips are loaded.

Under 38 CFR § 3.310, you need medical evidence that the knee condition is at least as likely as not the cause of your hip condition, or that it made a hip condition worse. Hip arthritis is also common with age, so a strong claim explains why the knee is a real contributor in your case.

How Hip Pain Is Connected to Knee Pain

One arthritic joint influences others. In a study of 900 patients who had a hip or knee replaced for osteoarthritis, when the next replacement was in a different type of joint (knee to hip, or hip to knee), it was more than twice as likely to be on the opposite leg as on the same leg. Patients with rheumatoid arthritis showed no such pattern, which the authors read as evidence that altered joint loading drives the progression of osteoarthritis (Shakoor et al., 2002). A related study found that people with advanced arthritis in one hip loaded the opposite knee more heavily during walking (Shakoor et al., 2003). Most of this research measures the hip-to-knee direction, but the knee-to-hip finding was also statistically significant.

Altered gait. A painful or stiff knee shortens stride, changes stance time, and shifts weight. Favoring the painful knee loads the opposite hip, while gait changes on the painful side alter how the same-side hip moves and is loaded. A documented limp or antalgic gait in your records is what turns this general mechanism into evidence.

Muscles that cross both joints. The rectus femoris, the hamstrings, and the tensor fasciae latae with the iliotibial band span both the hip and the knee. Knee pain, bracing, and reduced activity can weaken or tighten these muscles and the hip stabilizers such as the gluteus medius. A clinician can connect this to lateral hip problems such as greater trochanteric pain or tendinopathy when the examination supports it.

Evidence Requirements

• Current hip diagnosis. For example hip osteoarthritis, greater trochanteric pain syndrome or bursitis, gluteal tendinopathy, or limited hip motion, with examination and imaging findings.
• Service-connected knee documentation. Your rating decision for the knee.
• Gait evidence. PT or clinic notes describing a limp, antalgic gait, Trendelenburg sign, or use of a cane or brace.
• Timeline. Records showing hip symptoms began or worsened after the knee condition.
• Medical nexus opinion. An opinion that the hip condition is at least as likely as not caused or aggravated by the knee condition, explaining the mechanism and weighing other causes such as age, weight, prior hip injuries, or occupation.
• Lay statements. Your account and others’ observations of the limp and of trouble with stairs, getting in and out of vehicles, and putting on shoes and socks.

Rating Criteria for Hip Pain

DC 5252 — Thigh, limitation of flexion of:

• 10% — Flexion limited to 45 degrees
• 20% — Flexion limited to 30 degrees
• 30% — Flexion limited to 20 degrees
• 40% — Flexion limited to 10 degrees

DC 5251 — Thigh, limitation of extension of:

• 10% — Extension limited to 5 degrees

DC 5253 — Thigh, impairment of:

• 10% — Limitation of rotation, cannot toe-out more than 15 degrees with the affected leg; or limitation of adduction, cannot cross legs
• 20% — Limitation of abduction, motion lost beyond 10 degrees

DC 5003 — Degenerative arthritis: Arthritis confirmed by X-ray is rated on limitation of motion. If limitation of motion is noncompensable under the hip codes, 10% applies to the hip as a major joint when limited motion is objectively confirmed, for example by swelling, muscle spasm, or satisfactory evidence of painful motion.

Painful motion: Under 38 CFR § 4.59, actually painful, unstable, or malaligned joints are entitled to at least the minimum compensable rating for the joint. Separate ratings under DCs 5251, 5252, and 5253 for the same hip are possible only when each reflects a different limitation (38 CFR § 4.14). See the hip pain guide for more detail.

Nexus Letter Tips

Who should write it: Any qualified clinician can provide the opinion; VA does not require a specialist. VA weighs the opinion on its reasoning and on whether it rests on accurate facts. A physician who has examined both the knee and the hip is well placed. A physical therapist’s gait documentation is useful supporting evidence.

What it should include:

1. Confirmation of a records review and examination
2. The hip diagnosis and supporting findings
3. The knee condition and the documented gait changes it caused
4. The specific mechanism in your case (same-side or opposite-side loading, muscle weakness), tied to your records
5. How other risk factors were weighed
6. If the hip problem predated the knee condition, how the knee made it worse beyond natural progress
7. The conclusion in VA’s standard: “at least as likely as not” (50% or greater probability)

Research can support the reasoning, but VA does not require the opinion to cite studies.

C&P Exam Tips

The examiner will usually complete the Hip and Thigh Conditions DBQ, which records motion in every plane, pain on weight-bearing and passive motion, repetitive use, flare-ups, and findings such as leg length discrepancy.

• Report pain where it starts in flexion, extension, abduction, adduction, and rotation.
• Describe typical days and flare-ups accurately. How often flare-ups happen, how long they last, and what you cannot do during them.
• Explain the knee connection with dates. When the knee problem began, when you started limping, and when hip pain began.
• Walk as you normally do and bring any cane or brace you use.
• Describe function. Stairs, getting in and out of vehicles, putting on shoes and socks, sitting, sleeping on your side, and work tasks.
• Make sure each affected hip is examined.

Aggravation

If you had a hip problem before the knee condition, the claim can be based on aggravation under 38 CFR § 3.310(b). VA only concedes aggravation when medical evidence establishes the hip’s baseline severity, either before the aggravation or through the earliest medical evidence after it began. VA rates the increase above that baseline, minus natural progression.

Impact on Combined Rating

Ratings combine under 38 CFR § 4.25. See VA math for the full method.

Example — same-side hip: A veteran has 30% for the right knee and receives 10% for the right hip. Both are on one leg, so no bilateral factor applies. 30 and 10 combine to 37, which rounds to 40%.

Example — both hips: The same veteran receives 10% for each hip. The right knee and right hip (right leg) and the left hip (left leg) are compensable disabilities of both legs, so all three go into the bilateral factor calculation (38 CFR § 4.26).

1. Combine 30, 10, and 10: 30 and 10 combine to 37; 37 and 10 combine to 43.
2. Add 10% of 43 (4.3): 47.3, treated as 47.
3. 47 rounds to a final 50%.

For personalized guidance on your VA disability claim, consult a VA-accredited VSO, attorney, or claims agent.