ULNOCARPAL IMPACTION SYNDROME RESTRICTS EVEN MIDCARPAL RANGE OF MOTION

Author:

Tatebe Masahiro1,Nakamura Ryogo1,Horii Emiko1,Nakao Etsuhiro1,Inagaki Hironobu1

Affiliation:

1. Department of Hand Surgery, Nagoya University School of Medicine, Nagoya, Japan

Abstract

Ulnocarpal impaction syndrome is believed to be caused by abutment between the ulna and the ulnar carpus. We measured radiocarpal and midcarpal ranges of motion in 40 patients with ulnocarpal impaction syndrome by radiographic motion studies. The results showed that the radiocarpal and midcarpal ranges of motion were equally restricted in the affected wrist compared with the unaffected wrist. Therefore, motion of the radiocarpal joint and midcarpal joint contributed equally to total wrist motion bilaterally. No correlation between ulnar variance and the contribution of radiocarpal motion to overall wrist motion was found. Restriction of wrist motion in ulnocarpal impaction syndrome is not caused directly by abutment between the ulna and ulnar carpus, but a satisfactory explanation for restricted motion is still lacking.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Medicine

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