Secondary Condition Claim · VASRD 5242
Degenerative Arthritis of the Spine Secondary to External Popliteal Nerve Paralysis
A condition caused or aggravated by an already service-connected disability can be granted its own service connection as a secondary condition under 38 CFR § 3.310. Here's how that works for Degenerative Arthritis of the Spine when it develops after External Popliteal Nerve Paralysis.
Why Degenerative Arthritis of the Spine Is Linked to External Popliteal Nerve Paralysis
Nerve damage may originate from spinal compression
Primary condition · VASRD 8521
External Popliteal Nerve Paralysis
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.
Secondary condition · VASRD 5242
Degenerative Arthritis of the Spine
Wear and tear in the spine causing stiffness, pain, or nerve issues.
Degenerative Arthritis of the Spine VA Rating Tiers
The VA rates Degenerative Arthritis of the Spine the same way whether it's claimed directly or as secondary to External Popliteal Nerve Paralysis — severity of Degenerative Arthritis of the Spine itself determines the percentage.
| Rating | Criteria |
|---|---|
| 100% | The entire spine — neck and back together — is fused rigid in a poor position, meeting VA's definition of unfavorable ankylosis. |
| 50% | The whole mid and lower back is fused rigid in a poor position, though the neck still moves. |
| 40% | The whole neck is fused rigid in a poor position, the lower back bends forward only 30 degrees or less, or the whole mid and lower back is fused in a neutral position. |
| 30% | The neck bends forward only 15 degrees or less, or the whole neck is fused in a neutral position. |
| 20% | Moderate loss of back or neck motion, or muscle spasm or guarding bad enough to change how you walk or hold your spine. |
| 10% | Mild loss of back or neck motion; or muscle spasm, guarding, or localized tenderness that does not change gait or posture; or a vertebral body that lost half its height or more in a fracture. |
Example combined rating
20% External Popliteal Nerve Paralysis + 20% Degenerative Arthritis of the Spine = 36%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 20% and 20% combine to 36%, not 40%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
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Evidence for a Degenerative Arthritis of the Spine Secondary Claim
- •Range of motion tests from VA or ortho
- •MRI or X-ray showing degenerative disc disease
- •Doctor notes on back pain frequency
- •Spine X-rays or MRI
- •C&P exam showing limited flexion or stiffness
- •Physical therapy records documenting chronic pain
Common questions about Degenerative Arthritis of the Spine secondary to External Popliteal Nerve Paralysis
- Can Degenerative Arthritis of the Spine be service-connected as secondary to External Popliteal Nerve Paralysis?
- Yes. Under 38 CFR § 3.310, a condition that is caused or aggravated by an already service-connected disability can be granted secondary service connection. Nerve damage may originate from spinal compression You'll need a current Degenerative Arthritis of the Spine diagnosis and a medical nexus opinion linking it to yo…
- What VA rating can I get for Degenerative Arthritis of the Spine as a secondary condition?
- Degenerative Arthritis of the Spine is rated under VASRD diagnostic code 5242 using the same criteria whether it's a direct or secondary claim: possible ratings are 100%, 50%, 40%, 30%, 20%, 10%. The rating depends on the severity of Degenerative Arthritis of the Spine itself, not on the severity of External Popliteal…
- How does a secondary Degenerative Arthritis of the Spine claim affect my combined VA rating?
- The VA doesn't add ratings together. Using the official combined-ratings formula (38 CFR 4.25): a 20% rating for External Popliteal Nerve Paralysis combined with a 20% rating for Degenerative Arthritis of the Spine (example figures) produces a combined rating of 36%, not 40%. Approving Degenerative Arthritis of the Sp…
- What evidence do I need to service-connect Degenerative Arthritis of the Spine as secondary to External Popliteal Nerve Paralysis?
- Strong evidence for the underlying Degenerative Arthritis of the Spine diagnosis includes: Range of motion tests from VA or ortho; MRI or X-ray showing degenerative disc disease; Doctor notes on back pain frequency; Spine X-rays or MRI. For the secondary link itself, a nexus letter from a treating provider explaining…
Primary condition
Full External Popliteal Nerve Paralysis guide
Secondary condition
Full Degenerative Arthritis of the Spine guide
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See how External Popliteal Nerve Paralysis and Degenerative Arthritis of the Spine combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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