Median Nerve Entrapment
Repetitive forceful hand/wrist use and vibration exposure (occupational) associated with carpal tunnel syndrome in service members.
38 CFR diagnostic code 8515
Peer-reviewed evidence (5)
The verified studies behind a Median Nerve Entrapment claim — each links to its real PubMed or DOI record. These are sources our nexus drafts can draw from; none are invented.
- Wolf JM, Mountcastle S, Owens BD. Incidence of carpal tunnel syndrome in the US military population. Hand (N Y). 2009;4(3):289-93. PMID:19172361. doi:10.1007/s11552-009-9166-y.
- Garland FC, Garland CF, Doyle EJ Jr, Balazs LL, Levine R, Pugh WM, Gorham ED. Carpal tunnel syndrome and occupation in U.S. Navy enlisted personnel. Arch Environ Health. 1996;51(5):395-407. PMID:8896390. doi:10.1080/00039896.1996.9934428.
- Deal JB, Magee AJ. Carpal Tunnel Syndrome in Military Aviators. Mil Med. 2020;185(9-10):e1506-e1509. PMID:32601681. doi:10.1093/milmed/usaa077.
- Tabatabaeifar S, Dalbøge A. Carpal tunnel syndrome and occupational hand exposures: a Danish nationwide cohort study. Occup Environ Med. 2024;81(8):417-424. PMID:39160073. doi:10.1136/oemed-2024-109568.
- Giersiepen K, Spallek M. Carpal tunnel syndrome as an occupational disease. Dtsch Arztebl Int. 2011;108(14):238-42. PMID:21547163. doi:10.3238/arztebl.2011.0238.
Controlling law
The CFR sections and cases the theories relevant to this condition rest on — the legal standard raters evaluate against, never a prediction about any claim.
Direct (§ 3.303)
Regulation
38 C.F.R. § 3.303
Direct service connection — a current disability linked to service. (Continuity of symptomatology under § 3.303(b) is limited by case law to the § 3.309(a) chronic diseases — Walker.)
Case law
Shedden v. Principi, 381 F.3d 1163 (Fed. Cir. 2004)
The three-element test: current disability, in-service event, and a nexus between them.
Holton v. Shinseki, 557 F.3d 1363 (Fed. Cir. 2009)
Federal Circuit restatement of the same three direct-service-connection elements.
Caluza v. Brown, 7 Vet. App. 498 (1995)
The evidentiary framework a rater weighs each element against.
Walker v. Shinseki, 708 F.3d 1331 (Fed. Cir. 2013)
Continuity of symptomatology (§ 3.303(b)) is available ONLY for a chronic disease listed in § 3.309(a); any other condition must use the medical-nexus pathway.
Davidson v. Shinseki, 581 F.3d 1313 (Fed. Cir. 2009)
A categorical 'a medical opinion is always required for nexus' is legal error — competent lay evidence can suffice.
Jandreau v. Nicholson, 492 F.3d 1372 (Fed. Cir. 2007); Layno v. Brown, 6 Vet. App. 465 (1994)
A veteran is competent to report symptoms they personally observe (Layno), and lay evidence can even establish a simple diagnosis in the right case (Jandreau).
McLendon v. Nicholson, 20 Vet. App. 79 (2006)
A LOW threshold — evidence that merely indicates a nexus MAY exist obligates VA to provide a C&P exam.
38 U.S.C. § 5107(b); Gilbert v. Derwinski, 1 Vet. App. 49 (1990)
When the evidence is in relative equipoise, the tie goes to the veteran — the preponderance must be AGAINST the claim to deny it.
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