Ogawa Hiroyasu, Akaike Atsushi, Ishimaru Daichi, Yamada Kazunari, Shimizu Takashi, Koyama Yoshinari, Hori Hirohiko
Department of Orthopaedic Surgery, Hikone Municipal Hospital, 1882 Hassaka, Hikone, 522-0057, Japan.
Mod Rheumatol. 2007;17(4):327-9. doi: 10.1007/s10165-007-0586-7. Epub 2007 Aug 20.
Posterior interosseous nerve palsy (PINP) is a rare complication of rheumatoid arthritis of the elbow. A 58-year-old woman with rheumatoid arthritis, who complained of an inability to extend her left fingers, was referred to our hospital. After a series of studies, extensor tendon ruptures were excluded, and PINP was diagnosed. By means of the Henry anterolateral approach, the radial nerve was exposed, which was compressed by swollen synovial membrane at the Frohse arcade. Elbow synovectomy was performed, and the arcade was opened to release the nerve. The PINP has been recovered completely within 2 weeks after surgery. Various examinations other than magnetic resonance imaging have been reported for the adjunctive diagnosis of PINP, but MR imaging was most useful as an adjunctive examination in this case.
骨间后神经麻痹（PINP）是肘部类风湿性关节炎的一种罕见并发症。一名58岁患有类风湿性关节炎的女性，因主诉无法伸展左手手指而被转诊至我院。经过一系列检查，排除了伸肌腱断裂，诊断为PINP。通过亨利前外侧入路，暴露桡神经，其在弗罗泽弓处被肿胀的滑膜压迫。进行了肘部滑膜切除术，并切开弓部以松解神经。术后2周内PINP已完全恢复。除磁共振成像外，已有多种检查方法用于PINP的辅助诊断，但在本病例中，磁共振成像作为辅助检查最为有用。
