title: MR imaging of ulnar nerve entrapment secondary to an anomalous wrist muscle.
abstract: MR imaging of an anomalous hypothenar adductor muscle causing isolated deep ulnar nerve branch compression and producing a purely motor neuropathy is presented. The muscle appears to represent a type 1 variant of the intrinsic anomalous hypothenar adductor muscle.
authors.affiliation: Department of Radiology, Moncrief Army Community Hospital, Columbia, SC 29207, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Ruocco
authors.forename: J J
authors.initials: JJ
authors.lastname: Walsh
authors.forename: J P
authors.initials: JP
authors.lastname: Jackson
mesh_terms: D019299:Decompression, Surgical; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D014459:Ulnar Nerve / Q000473:pathology / Q000601:surgery; D017769:Ulnar Nerve Compression Syndromes / Q000175:diagnosis* / Q000601:surgery