Carpal Tunnel Syndrome Due to Fibrolipomatous Hamartoma of the Median Nerve in Klippel-Trénaunay

Syndrome

by Mitsuhiro Matsubara, Hirotaka Tanikawa, Yuuji Mogami, Shunichi Shibata, Shigeharu Uchiyama, and Hiroyuki Kato

J Bone Joint Surg AmVolume 91(5):1223-1227

May 1, 2009

©2009 by The Journal of Bone and Joint Surgery, Inc.

Macrodactyly of both index fingers and severe thenar atrophy on the right (asterisk).

Mitsuhiro Matsubara et al. J Bone Joint Surg Am 2009;91:1223-1227

©2009 by The Journal of Bone and Joint Surgery, Inc.

A three-dimensional computed tomography reconstruction showing the median nerve to be enlarged at the carpal tunnel and constricted at the level of the hook of the hamate.

Mitsuhiro Matsubara et al. J Bone Joint Surg Am 2009;91:1223-1227

©2009 by The Journal of Bone and Joint Surgery, Inc.

A T1-weighted magnetic resonance imaging scan showing the cross-sectional areas of the median nerve, the carpal tunnel, and the flexor tendons to be 87, 241, and 71 mm2, respectively,

at the level of the hook of the hamate.

Mitsuhiro Matsubara et al. J Bone Joint Surg Am 2009;91:1223-1227

©2009 by The Journal of Bone and Joint Surgery, Inc.

After complete division of the transverse carpal ligament, the median nerve appears greatly enlarged from the distal part of the forearm to the palm.

Mitsuhiro Matsubara et al. J Bone Joint Surg Am 2009;91:1223-1227

©2009 by The Journal of Bone and Joint Surgery, Inc.