VASRD 8521 · Neurological Conditions
External Popliteal Nerve Paralysis VA Disability Rating
The external popliteal (common peroneal) nerve runs behind the knee and controls the ability to lift the foot and toes upward. Damage to this nerve is a common cause of foot drop and is frequently linked to a knee injury, fracture, or nerve compression from the spine.
VA Rating Tiers
How the VA Evaluates External Popliteal Nerve Paralysis
The rating is based on whether paralysis is complete (an inability to dorsiflex the foot at all, causing foot drop) or incomplete, and if incomplete, how severe the weakness is - confirmed through EMG testing and a neurological exam documenting foot and toe strength.
Approval outlook
Moderate – well-documented cases approved often.
Veterans service-connected
~60,000 veterans
Typical rating awarded
~20%
Vetrify editorial estimates informed by VA published claims data (VBA Annual Benefits Report) and the VA rating schedule — not official VA statistics.
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Best Evidence to Gather
- •A neurologist's exam along with EMG test results confirming nerve disruption and its severity.
- •Physical therapy notes documenting gait changes and mobility limitations caused by foot drop.
- •Service records documenting leg trauma or a repetitive injury that could explain the nerve damage.
Strategy Tips
- •Get EMG testing done specifically for this nerve, since it's the objective evidence that confirms and grades the severity of the paralysis.
- •Describe how foot drop affects walking, driving, and balance - a foot that can't clear the ground properly changes gait in ways worth documenting in detail.
- •Document any knee injury or trauma history in service, since this nerve runs directly behind the knee and injury there is the most common cause.
C&P Exam Pitfalls
- •Not getting EMG testing done, which is typically necessary to confirm the diagnosis and support anything beyond the mildest rating tier.
- •Underreporting foot drop symptoms, such as tripping or needing to lift the leg higher than normal to walk, which are meaningful functional evidence.
Common Filing Mistakes
- •Not submitting a neurological exam, leaving the claim without the clinical findings the rating schedule requires.
- •Failing to describe gait changes or balance instability, which are important functional evidence beyond a simple diagnosis.
Onset Patterns
- •This condition can develop suddenly following a specific trauma, such as a knee injury or fracture that damages the nerve directly.
- •It can also develop gradually from nerve compression, including from spinal issues that affect the nerve root before it reaches the knee.
Secondary Conditions
Conditions commonly linked to External Popliteal Nerve Paralysis. Service-connecting a secondary condition can increase your combined rating.
Common questions about External Popliteal Nerve Paralysis
- Is External Popliteal Nerve Paralysis a VA-rated disability?
- Yes. The VA rates External Popliteal Nerve Paralysis under VASRD diagnostic code 8521 (Neurological Conditions). The external popliteal (common peroneal) nerve runs behind the knee and controls the ability to lift the foot and toes upward. Damage to this nerve is a common cause of foot drop and is frequently linked to…
- What VA disability rating can I get for External Popliteal Nerve Paralysis?
- Possible VA ratings for External Popliteal Nerve Paralysis are 40%, 30%, 20%, 10%. Examples: 40%: Total foot paralysis; 30%: Very weak foot, can't lift toes well; 20%: Some toe/foot control loss.
- What's the typical VA rating awarded for External Popliteal Nerve Paralysis?
- Vetrify estimates the typical rating awarded for External Popliteal Nerve Paralysis at around 20%, based on VA claims data and the rating schedule. An estimated 60,000 veterans are service-connected for External Popliteal Nerve Paralysis. Estimated approval outlook: Moderate – well-documented cases approved often.
- What evidence helps prove External Popliteal Nerve Paralysis for VA disability?
- Strong evidence for a External Popliteal Nerve Paralysis claim includes: A neurologist's exam along with EMG test results confirming nerve disruption and its severity.; Physical therapy notes documenting gait changes and mobility limitations caused by foot drop.; Service records documenting leg trauma or a repetitive…
- What mistakes should veterans avoid when claiming External Popliteal Nerve Paralysis?
- Common pitfalls when filing for External Popliteal Nerve Paralysis: Not submitting a neurological exam, leaving the claim without the clinical findings the rating schedule requires.; Failing to describe gait changes or balance instability, which are important functional evidence beyond a simple diagnosis..
- What conditions are commonly secondary to External Popliteal Nerve Paralysis?
- Conditions often service-connected as secondary to External Popliteal Nerve Paralysis include: Knee Injuries, Back Strain. Filing for secondary conditions can increase a veteran's combined VA rating.
Official sources
- 38 CFR § 4.124a — Schedule of ratings — neurological conditions (Diagnostic Code 8521)
Rating criteria on this page are an educational summary of the cited regulation — the eCFR text is authoritative. See how Vetrify derives its numbers.
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