VA Disability Rating for Femoral Nerve (Anterior Crural Nerve) Paralysis
Diagnostic Code 8526 · 38 CFR §4.124a
What Is It?
The femoral nerve is one of the largest nerves in your leg. It controls the quadriceps muscles on the front of your thigh, which straighten your knee and are essential for standing up, walking, climbing stairs, and maintaining balance. The nerve also provides sensation to the front of your thigh and the inner side of your lower leg. When the femoral nerve is damaged, your knee may buckle unexpectedly and you may have significant difficulty with stairs, getting up from chairs, and walking on uneven terrain. Veterans may develop this from pelvic fractures, hip injuries, abdominal or groin surgeries, gunshot or shrapnel wounds to the hip or thigh area, or compression from prolonged positioning during service.
Rating Criteria
| Rating | Criteria |
|---|---|
| 40% | Complete paralysis with inability to straighten the knee, significant quadriceps wasting, and loss of knee jerk reflex |
| 30% | Severe incomplete paralysis with marked quadriceps weakness and frequent knee buckling |
| 20% | Moderate incomplete paralysis with noticeable thigh weakness and occasional knee instability |
| 10% | Mild incomplete paralysis with some quadriceps weakness or sensory changes on the front of the thigh |
Evidence Needed
- Medical records documenting femoral nerve damage connected to military service
- Electromyography and nerve conduction studies testing the femoral nerve
- Quadriceps strength measurements and thigh circumference comparison between legs
- Documentation of falls or knee buckling episodes
- Physical therapy records showing rehabilitation efforts and functional limitations
C&P Exam Tips
- Show the examiner any visible difference in thigh muscle size between your legs
- Demonstrate difficulty rising from a seated position without using your arms
- Describe falls caused by your knee giving way unexpectedly
- Ask the examiner to test your knee jerk reflex, which should be diminished or absent
- Explain how the weakness affects stair climbing, walking, and standing from chairs
How to File
File under DC 8526 for femoral nerve paralysis. Include nerve conduction studies and evidence of quadriceps weakness. Photographs comparing thigh muscle size between your legs can be helpful. Explain the in-service event that caused the nerve damage, whether it was an injury, surgery, or other incident.
Common Mistakes
Having knee buckling evaluated as a knee joint problem rather than a nerve condition Not measuring thigh circumference to document muscle wasting Failing to report the frequency and circumstances of falls from knee giving way Not connecting the femoral nerve damage to the original pelvic or hip injury
Frequently Asked Questions
Can femoral nerve damage cause my knee to lock or buckle?
Femoral nerve damage causes knee buckling, not locking. When the quadriceps muscle cannot fire properly due to nerve damage, your knee may suddenly give way when you are standing or walking. This is different from knee locking, which is typically caused by a torn meniscus or loose body in the joint.
Is femoral neuropathy different from sciatica?
Yes. Femoral neuropathy affects the front of your thigh and your ability to straighten your knee. Sciatica affects the back of your leg and is caused by a different nerve. They are rated under different diagnostic codes because they involve different nerves and cause different functional problems.