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KMID : 0386419990120040989
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Journal of the Korean Fracture Society
1999 Volume.12 No. 4 p.989 ~ p.994
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Radiologic Follow - up Results of Distraction After Treatment of Distal Radius Fractures using External Fixator
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Kim Jong-Oh
Kim Dong-Wook
Koh Young-Do
Yoo Jae-Doo
Kim Kyoung-Soo
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Abstract
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External fixation for severe fractures of the distal radius is accepted treatment offering thepotential advantages of controlled distraction, accurate positioning of fracture fragments, andavoidance of extensive open procedures. One of the limitation of external fixation for distalradius fractures is excessive distraction, which affect the outcome. This study was conducted toevaluate the changes of the distraction of the intercarpal and radiocarpal joint, developed aftertreatment of distal radius fractures with external fixator. Restrospective study was done for 28paitents, who were evaluated by chart review, questionnaire, radiograph, and physicalexamination. The carpal height ratio, radial inclination, velar tilt, radial length were measured inthe postoperative and follow-up radiographs. The carpal height ratio was used to quantify thedistraction. Functional evaluation was performed with Demerit-Point system described byGarthland and Werley. Five fractures had an excellent results, 16 had a good results, 4 had a fairresults, and 3 had poor results. After union, average radial inclination was 21.3 degree, averagedorsal angulation was -0.5 degree, and radial shortening was 1mm. Increased carpal height ratioof the 9 cases did not decrease to less than 0.56 at one year after operation. The over-distractionof intercarpal and radiocarpal joint developed after external fixation of the distal radius fracture,did not have decreased in the one year follow-up radiographs after operation. The over-distraction should be avoided intraoperativly
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KEYWORD
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Distal Radius Fracture, External fixation, Distraction, Carpal Height ratio
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