Abstract
We studied the postoperative displacement after each intrafocal pinning procedure (Kapandji) and conventional cross or parallel pinning for Colles' fracture. Fifty-eight cases of Colles' fracture were treated by percutaneous pinning in our hospital from 1994 to 1998. The rate of postoperative displacement after intrafocal pinning was 28% (7 cases of 25 intrafocal-pinning cases) and conventional cross or parallel pinning was 48% (16 cases of 33 conventional cases).The common causes of the displacement in conventional procedures are malreduction and loosening of the Kirschner wire. On the other hand, the intrafocal pinning procedure enables good reduction but tends to result in hyperreduction, which causes volar flexion deformity. We concluded that percutaneous pinning should not be performed if good reduction cannot be obtained and fixation by osteotaxis is necessary to maintain reductin.
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