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[Reconstruction of the proximal quarter of the ulna after post-traumatic destruction. 3 case reports].

Serious injuries of the elbow with of bone loss of the proximal ulna or of the two bones of the forearm may result in a loss of function in flexion-extension and pronation supination with painful instability of the elbow. The treatment of these functional sequelae is difficult because it must reestablish the mobility and the stability of the elbow. We report three cases of post-traumatic loss of the proximal quarter of the ulna. In two cases, the radius was intact and we transferred the proximal radius according to Young's method modified by Piollet. In the third case, the loss of the proximal extremity of the two bones of the forearm was treated with the transfer of the proximal extremity of the fibula. By means of these techniques, our three patients had very satisfying functional results as evaluated at 18 years, 18 months and 17 years follow-up respectively.