Back or Neck Strain Claimed Secondary to Knee Instability

Educational reference, not legal advice or claims assistance. This page reports aggregate outcomes for a documented claim pairing. It does not tell you whether to file and it does not predict your result. For help with a specific claim, work with a free VA-accredited representative.

Back or Neck Strain (VA diagnostic code 5237) is sometimes claimed as secondary to service-connected Knee Instability (code 5257) under 38 CFR 3.310. This page reports what published Board of Veterans' Appeals decisions on that pairing show. It is an encyclopedic reference, not a forecast.

What published Board decisions show

Across 713 published Board (BVA) decisions in our index where back or neck strain was claimed as secondary to knee instability, the outcomes broke down as follows. These are historical aggregates of decided appeals, not a prediction for any individual claim.

21%
Granted
45%
Denied
31%
Remanded
Granted 149Denied 318Remanded 220 (sent back for more development)

Counting only appeals that were granted or denied (setting aside remands), about 32% were granted. A remand is not a loss; it means the Board needed more evidence before deciding.

Source: aggregate of published BVA decisions indexed by RateMyVSO. Secondary service connection rule: 38 CFR § 3.310. Figures describe decided appeals and can change as new decisions are indexed.

How this pairing works

A secondary claim says back or neck strain flows from a service-connected knee instability. Whether the medical link exists in any one case is a medical question decided on that case's own evidence (the nexus). See the Secondary Claim guide.

What a secondary claim on this pairing needs

Under 38 CFR 3.310 a secondary claim turns on three elements:

  • A current diagnosis: a medical diagnosis of back or neck strain (the secondary).
  • A service-connected primary: Knee Instability, already service-connected (the primary). A 0% primary still counts.
  • A medical nexus: a medical opinion linking the back or neck strain to the knee instability, showing the primary caused or aggravated it.

See the Secondary Claim guide for the caused-versus-aggravated split, and the Nexus Letter guide for what makes the medical opinion strong.

Frequently Asked Questions

Does Knee Instability have to be highly rated to support a back or neck strain secondary claim?

No. 38 CFR 3.310 looks at whether the service-connected Knee Instability caused or aggravated the back or neck strain, not at how severe the Knee Instability rating is. Even a 0% service-connected primary can anchor a secondary claim.

What do the percentages on this page mean?

They are the historical outcomes of 713 published Board decisions on this exact pairing: 21% granted, 45% denied, 31% remanded. They describe decided appeals already on record. They do not predict what would happen in any individual case.

RateMyVSO. Educational resource. Not affiliated with the U.S. Department of Veterans Affairs. Not legal advice. All RateMyVSO tools are free. Find a VSO representative for personalized guidance.