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Seven fresh cadaveric specimens were used to determine the loss of forearm rotation
with varying distal radius fracture malalignment patterns. Uniplanar malunion patterns
consisting of dorsal tilt, radioulnar translation, or radial shortening were simulated
by creating an osteotomy at the distal end of the radius, orienting the distal fragment
position using an external fixator, and maintaining the position with wedges and a
T-plate. Rotation of the forearm was produced by fixing the elbow in a flexed position
and applying a constant torque to the forearm using deadweights. Forearm rotation
was measured with a protractor. Dorsal tilt to 30° and radial translation to 10 mm
led to no significant restriction in forearm pronation or supination ranges of motion.
A 5-mm ulnar translation deformity resulted in a mean 23% loss of pronation range
of motion. Radial shortening of 10 mm reduced forearm pronation by 47% and supination
by 29%.
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Article info
Publication history
Accepted:
July 31,
1996
Received:
July 28,
1995
Footnotes
*No benefits in any form have been received or will be received from a commerical party related directly or indirectly to the subject of this article.
Identification
Copyright
© 1997 The American Society for Surgery of the Hand. All rights reserved. Published by Elsevier Inc.
