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O1108 LATERAL CLOSING OSTEOTOMY OF THE RADIUS FOR ADVANCED KIENBÖCK’S DISEASE



Abstract

Aim: Although several surgical procedures have been proposed for advancedstage Kienböck’s disease, it still remains a difficult therapeutic problem. This study documents the clinical, radiographic and MRI outcomes of ten patients, who underwent lateral closing wedge osteotomy of the distal radius by the same surgeon, after MRI confirmation of advanced Kienböck’s disease. Methods: Ten patients (6 men and 4 women) with a mean age of 28,7 years (range 21–66) were included in this study. Seven had Lichtman stage III-B and three stage IV disease. The lateral closing wedge osteotomy was performed at the distal metaphysis of the radius through a palmar approach and was fixed with a 3,5mm titanium T-plate. The average follow up period was 52 months (range 36–60 months). Results: Substantial pain relief, increase in grip strength and range of wrist flexion and extension were achieved. Clinical results were excellent in two patients, good in five, fair in two patients and poor in one patient according to Nakamura’s postoperative scoring system. Gadolinium enhanced MRI at the latest follow up revealed signs of revascularization of the lunate in 6 cases. Conclusions: Lateral closing osteotomy decreases radial inclination and pressure at the radiolunate joint, thus improving lunate coverage. It is a reliable extra-articular procedure for advanced Kienbock’s disease that provides pain relief while there is evidence that it may improve lunate vascularization.

Theses abstracts were prepared by Professor Dr. Frantz Langlais. Correspondence should be addressed to him at EFORT Central Office, Freihofstrasse 22, CH-8700 Küsnacht, Switzerland.