title: Sonographic diagnosis of anatomical variations associated with carpal tunnel syndrome.
abstract: Bifid median nerve is an anatomic variation that occurs in about 18% of patients with symptoms suggestive of carpal tunnel syndrome and in about 15% of symptom-free subjects. Reversed palmaris longus is a rare anatomic muscular variation. The simultaneous presence of a bifid median nerve and a reversed palmaris longus has been very rarely described, usually during surgical exploration or in cadavers. We present two cases where ultrasound showed the presence of both abnormalities, allowing a correct diagnosis and influencing the treatment plan.
authors.affiliation: Department of Neuroscience, Institute of Neurology, Catholic University, Rome, Italy.
authors.forename: P
authors.initials: P
authors.lastname: De Franco
authors.forename: C
authors.initials: C
authors.lastname: Erra
authors.forename: G
authors.initials: G
authors.lastname: Granata
authors.forename: D
authors.initials: D
authors.lastname: Coraci
authors.forename: R
authors.initials: R
authors.lastname: Padua
authors.forename: L
authors.initials: L
authors.lastname: Padua
mesh_terms: D002349:Carpal Tunnel Syndrome / Q000000981:diagnostic imaging* / Q000601:surgery*; D019299:Decompression, Surgical / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005542:Forearm / Q000000981:diagnostic imaging; D006801:Humans; D008475:Median Nerve / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D020127:Recovery of Function; D018570:Risk Assessment; D012494:Sampling Studies; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler / Q000379:methods
keywords: bifid median nerve; musculoskeletal; nerve entrapment; peripheral nerves; reversed palmaris longus; sonography