OBJECTIVES: The aim of this study was to compare the ulnar nerve at the wrist by sonographic and electrophysiologic studies between @entity1 with @entity923 and control @entity1 and to verify the effect of @entity923 of the ulnar nerve at the wrist. METHODS: Forty-two hands of @entity1 with @entity923 and 37 hands of control @entity1 were examined. Electrophysiologic studies of the ulnar nerve were done in all @entity1 . The cross-sectional areas of the median and ulnar nerves at the wrist were evaluated by sonography. Fifteen hands of @entity1 with @entity923 who underwent carpal tunnel release were also evaluated by sonography after the operation. RESULTS: The ulnar nerve cross-sectional area of the @entity1 with @entity923 (mean    SD, 5.16    1.04 mm(2)) was significantly larger than that of the controls (3.56    0.52 mm(2); P < .0001). After release of the transverse carpal ligament, the cross-sectional area of the ulnar nerve was significantly smaller than the size measured prior to surgery (P < .0001). The cross-sectional area of the median nerve was significantly correlated with that of the ulnar nerve (P < .05). However, no statistically significant difference was found between the @entity1 with @entity923 and controls in ulnar nerve conduction. There were no statistically significant differences in nerve conduction study results or cross-sectional area of the ulnar nerve between @entity1 with @entity923 with and without extramedian symptoms. CONCLUSIONS: The cross-sectional areas of the ulnar and median nerves at the wrist are increased in @entity1 with @entity923 . Also, the cross-sectional area of the ulnar nerve is decreased after carpal tunnel release.

Effect of XXXX on the Ulnar Nerve at the Wrist: Sonographic and Electrophysiologic Studies.

@entity1 :: ('9606', 'Species') :: ['participants', 'patients'] @entity923 :: ('MESH:D002349', 'Disease') :: ['carpal tunnel syndrome']
@entity923 :: (MESH:D002349,Disease) :: ['Carpal Tunnel Syndrome']
