Posterior interosseous nerve palsy

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 e 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. Journal of Hand Surgery (British and European Volume, 1998) 23B: 1:104-106 There have been a number of studies on the aetiology of non-traumatic posterior interosseous nerve palsy, but little has been written about he patterns of paralysis of the posterior interosseous innervated muscles (Gelberman et al, 1993; Hirayama nd Takemitsu, 1988; Kojima et al, 1993; Spinner, 1978). We have investigated the pattern of paralysis and its association with the site of compressio