Results of Closed Wedge Osteotomy for Correction of Distal Humeral Angular Deformity - Detection of Osteotomy Site for Minimizing Secondary Deformity - |
Jae Sung Seo, Jae Hyeung Han, Oog Jin Shon, Sam Kook Park, Hyun Kook Youn, Seong Joon Byun |
원위 상완골 각변형 교정을 위한 폐쇄성 쐐기 절골술후 결과 (이차 변형을 최소화하기 위한 절골 부위 측정) |
서재성, 한재형, 손욱진, 박삼국, 윤현국, 변성준 |
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Abstract |
l osteotomy site to minimize secondary deformity and translation. Materials and Methods: From January 1995 to June 2004, we performed closed wedge osteotomy for correcting angular deformity after an elbow fracture in 13 patients. There were six cubitus varus and seven cubitus valgus. The average follow-up period was 49.1 month. The average period from the injury to the corrective osteotomy was 16.5 years, and the average age was 30 years old. We determined the optimal osteotomy site by overlapping normal side cortical line to that of deformed side. The carrying angle and lateral or medial prominence index were used for radiographic evaluation, and the range of motion and the complication for clinical evaluation. Results: In varus deformity, the carrying angle was an average difference of 25.8˚between normal and deformed side at preoperation, but decreased to 4˚at postoperation. In valgus deformity, it also decreased from 17.3˚to 8.3˚. In varus deformity, post operative lateral prominence index of deformed side was 31.9%, that of normal side was -1.4%. In valgus deformity, each medial index was 15.7% and 1.0%. As Oppenheim criteria, nine cases (69%) were over good grade. In the groups below and over 10 mm of differences between the site of maximum of deformity and osteotomy site, correction of the carrying angle was 23.1˚and 24.3˚, prominence index was 18.4% and 34.0%. Conclusion: In closed wedge osteotomy, a satisfactory correction of deformity and minimal secondary deformity could be obtained by positioning osteotomy site near maximal deformity which can be performed by comparing the cortical line of normal side. |
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