Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study.

Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Research Abstract Details 

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Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Abstract Text:

Joseph J Crisco,Douglas C Moore,G Elisabeta Marai,David H Laidlaw,Edward Akelman,Arnold-Peter C Weiss,Scott W Wolfe,

Patients with a malunited distal radius often have painful and limited forearm rotation, and may progress to arthritis of the distal radioulnar joint (DRUJ). The purpose of this study was to determine if DRUJ congruency and mechanics were altered in patients with malunited distal radius fractures. In nine subjects with unilateral malunions, interbone distances and dorsal and palmar radioulnar ligament lengths were computed from tomographic images of both forearms in multiple forearm positions using markerless bone registration (MBR) techniques. The significance of the changes were assessed using a generalized linear model, which controlled for forearm rotation angle (-60 degrees to 60 degrees ). In the malunited forearm, compared to the contralateral uninjured arm, we found that ulnar joint space area significantly decreased by approximately 25%, the centroid of this area moved an average of 1.3 mm proximally, and the dorsal radioulnar ligament elongated. Despite our previous findings of insignificant changes in the pattern of radioulnar kinematics in patients with malunited fractures, we found significant changes in DRUJ joint area and ligament lengthening. These findings suggest that alterations in joint mechanics and soft tissues may play an important role in the dysfunction associated with these injuries.

Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Publishing Authors By Initials

JJ Crisco,DC Moore,GE Marai,DH Laidlaw,E Akelman,AP Weiss,SW Wolfe,

For similar musculoskeletal system: skeleton: joints: hand joints: wrist joint research abstracts see: musculoskeletal system: skeleton: joints: hand joints: wrist joint research

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Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of orthopaedic research : official publica

VOLUME: 25

Page Numbers: 547-55

Journal Abbreviation: J. Orthop. Res.

ISSN: 0736-0266

DAY: 3

MONTH: Apr

YEAR: 2007

Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Information

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LANGUAGE: eng

NlmUniqueID: 8404726

Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study. Keywords Mesh Terms:

KEYWORDS: Wrist Joint

MESH TERMS: physiopathology

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Grant and Affiliation Information for Effects of distal radius malunion on distal radioulnar joint mechanics--an in vivo study.

AFFILIATION: Bioengineering Laboratory, Department of Orthopaedics, Brown Medical School/Rhode Island Hospital, 1 Hoppin Street, CORO West Suite 404, Providence, Rhode Island 02903, USA. joseph_crisco@brown.edu

Country: United States

AGENCY: United States NIAMS

GRANT: AR44005

ACRONYM: AR

MEDLINETA: J Orthop Res

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