Surgical treatment of spontaneous anterior interosseous nerve palsy: A comparison between minimal incision surgery and wide incision surgery

• DOI: 10.3109/2000656x.2012.753079
• Publication Date: 2013-05-15T16:02:04Z
• Authors: Kensuke Ochi; Yukio Horiuchi; Kenichi Tazaki; Shinichiro Takayama; Takashi Matsumura
• Keywords: Neurolysis; Constriction; Etiology; Entrapment Neuropathy

Recent reports have suggested that fascicular constriction located proximal to the elbow may be primary aetiology of spontaneous anterior interosseous nerve palsy (sAINP), and recommended interfascicular neurolysis ranging from forearm distal upper arm (wide incision surgery: WIS) for its treatment. On basis these reports, it was hypothesised that, if sAINP constriction, limited (minimal MIS) should similar results those WIS. Twenty-five surgically treated cases were retrospectively evaluated. The mean age onset 42.8 years, preoperative period 5.3 months, follow-up after operation 31 months. Eleven patients underwent MIS, while 14 WIS according patient's intention (intention-to-treat). Twenty-one had no entrapment neuropathy seen in this series. At latest follow-up, 82% British Medical Research Council grade ≥4 flexor-pollicis-longus, 80% flexor-digitorum-profundus-of-the-index-finger. There significant differences between either group. These result not external compression, but MIS favourable surgical