title: Posterior interosseous nerve palsy.
abstract: Eleven patients with non-traumatic paralysis of posterior interosseous innervated muscles were divided into three types, and the association between the type of paralysis and sites of compression was investigated. Type 1 (drop finger and thumb) showed a simultaneous compression of the recurrent branch and the descending branch at the entrance point and within the supinator. Type 2 (drop fingers) had compression of the recurrent branch alone, and Type 3 (drop thumb) had compression of the descending branch alone. The exit point from the supinator is considered to be the site of compression in Types 2 and 3.
authors.affiliation: Department of Orthopaedic Surgery, Kitami Red Cross Hospital, Kitami, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Suematsu
authors.forename: T
authors.initials: T
authors.lastname: Hirayama
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005385:Fingers / Q000294:innervation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000294:innervation; D009408:Nerve Compression Syndromes / Q000150:complications*; D010243:Paralysis / Q000209:etiology*; D013933:Thumb / Q000294:innervation*