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Abstract
We analyzed correlations between symptoms and radiographic findings with respect to the proximal and distal ulnar stumps after the Sauvé-Kapandji procedure for treating chronic derangement of the distal radioulnar joint. A total of 26 patients were studied (13 men, 13 women) with a mean age of 46 years at examination. Clinical assessment included elicitation of postoperative symptoms related to the proximal and distal ulnar stumps. In the radiographic study the radioulnar distance in the neutral wrist position and the presence or absence of scalloping at the radius were determined from posteroanterior (PA) views. The total mobility distance of the proximal ulnar stump was measured on the PA and lateral views while the wrist moved from radial to ulnar deviation or from extension to flexion. Eleven patients complained of tenderness over the distal ulnar stump and 5 patients felt discomfort around the proximal ulnar stump during forearm rotation. The postoperative radioulnar distance in patients with tenderness was significantly smaller than in the group without tenderness. Scalloping at the radius was shown in 9 patients but it was not related to the radioulnar distance. The total mobility distance of the proximal ulnar stump on the PA view was significantly greater in patients with tenderness than in those without, and it also was significantly greater in patients with scalloping than in those without. The total mobility distance on the lateral view was significantly greater in the group with discomfort than in the group without discomfort. The radioulnar distance was related to tenderness over the distal ulnar stump but not to the scalloping. Tenderness and scalloping each were related to radioulnar instability of the proximal ulnar stump. Discomfort around the proximal ulnar stump was related to dorsovolar instability of the stump. Prognostic, Level IV.
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