title: Isolated sensory impairment of the thumb due to an intraneural ganglion cyst in the median nerve.
abstract: We describe an unusual case of digital neuropathy of the thumb due to compression of the median nerve in the distal forearm by an extruded ganglion cyst originating from the radio-scaphoid joint of the wrist. Electrophysiologically, both conduction slowing and block of median motor and sensory axons were present across the cyst. These changes improved after surgery.
authors.affiliation: Department of Neurology, Medical College of Wisconsin, Milwaukee, USA.
authors.forename: S
authors.initials: S
authors.lastname: Jaradeh
authors.forename: J R
authors.initials: JR
authors.lastname: Sanger
authors.forename: E F
authors.initials: EF
authors.lastname: Maas
mesh_terms: D000328:Adult; D004594:Electrophysiology; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000503:physiopathology; D009408:Nerve Compression Syndromes / Q000209:etiology / Q000503:physiopathology; D009431:Neural Conduction; D012678:Sensation Disorders / Q000209:etiology* / Q000503:physiopathology; D013581:Synovial Cyst / Q000150:complications* / Q000601:surgery; D013933:Thumb / Q000294:innervation*; D014953:Wrist