title: [Compression of the deep branch of the ulnar nerve as it exits the pisiform-unciform hiatus: report of an anomaly not yet described].
abstract: We observed a case of compression of the deep branch of the ulnar nerve distal to the piso-hamate hiatus due to an aberrant fibrous band arising from the hamulus ossi hamatum and ending in the flexor digiti minimi muscle. An anatomical study of eleven fresh cadaver hands revealed that between the piso-hamate hiatus and the palm, the nerve passes through an osteo-fibrous tunnel in which multiple anomalies can occur. The authors think that ulnar nerve neurolysis at the wrist must always extend up to the palm.
authors.affiliation: Service de Chirurgie Orthopédique et Traumatologique, Hôpital St-Antoine, Paris.
authors.forename: C
authors.initials: C
authors.lastname: Dumontier
authors.forename: A
authors.initials: A
authors.lastname: Apoil
authors.forename: T
authors.initials: T
authors.lastname: Meininger
authors.forename: J
authors.initials: J
authors.lastname: Monet
authors.forename: B
authors.initials: B
authors.lastname: Augereau
mesh_terms: D000328:Adult; D002102:Cadaver; D002348:Carpal Bones; D000013:Congenital Abnormalities / Q000453:epidemiology / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D009408:Nerve Compression Syndromes / Q000209:etiology* / Q000601:surgery; D013710:Tendons / Q000002:abnormalities*; D014459:Ulnar Nerve
vernacular_title: Compression de la branche profonde du nerf ulnaire à la sortie du hiatus piso-unciformien. A propos d'une anomalie non encore décrite.