Zukawa Mineyuki, Osada Ryusuke, Kimura Tomoatsu
1 Department of Orthopaedic Surgery, Faculty of Medicine, University of Toyama, Toyama, Japan.
J Hand Surg Asian Pac Vol. 2019 Mar;24(1):96-99. doi: 10.1142/S2424835519720032.
We report a rare case of radial dislocation of the extensor tendon over the metacarpophalangeal (MCP) joint of the thumb. Ulnar dislocation has been reported, but previous reports have not mentioned radial dislocation of the extensor tendon in the thumb. Radial dislocation of the extensor tendon of the thumb gradually progressed after cerebral hemorrhage and the patient could not extend MCP joint of the thumb. To resolve difficulty in extending the MCP joint, surgical centralization of the extensor tendon and partial resection of the flexor pollicis brevis (FPB) and abductor pollicis brevis (APB) insertions was performed. The patient recovered function of thumb extensors.
我们报告了一例罕见的拇指掌指关节（MCP）处伸肌腱桡侧脱位病例。尺侧脱位已有报道，但既往报告未提及拇指伸肌腱桡侧脱位。脑出血后拇指伸肌腱桡侧脱位逐渐进展，患者无法伸直拇指的掌指关节。为解决伸直掌指关节的困难，进行了伸肌腱中心化手术以及部分切除拇短屈肌（FPB）和拇短展肌（APB）止点。患者恢复了拇指伸肌的功能。
