Standing radiographs cannot determine the correction in high tibial osteotomy

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Ogata-K. Yoshii-I. Kawamura-H. Miura-H. Arizono-T. Sugioka-Y. Department of Orthopaedic Surgery, Faculty of Medicine, Kyushu J-Bone-Joint-Surg-[Br]. 1991 Nov. 73(6). P 927-31. The use of standing radiographs to determine correction angles for high tibial osteotomy is not appropriate because the relative angle of the articular surfaces (condylar-plateau angle) in the weight-bearing knee changes after the osteotomy. This may give unpredictable results postoperatively. We found that the condylar-plateau angle in postoperative standing films is very similar to that seen in non-weight-bearing supine views, and suggest that these latter radiographs be used for pre-operative planning. We describe our early results, using a special osteotomy jig, in 140 knees. Author-abstract.