Osteotomies on 101 knees in 79 patients were assessed either prospectively or retrospectively. High tibial osteotomy was performed in 54 knees (27 with rheumatoid arthritis (RA) and 27 with osteoarthrosis (OA)) and double (tibiofemoral) osteotomy in 47 knees (25 RA and 22 OA), and were assessed prospectively in 46 and retrospectively in 55. Using a subjective assessment, 65% showed some improvement--70% of the single and 60% of the double osteotomies. Of the four groups (OA single or double, RA single or double), OA knees having a single osteotomy improved most frequently (74%), and OA knees having a double osteotomy least frequently (50%). Significant improvements in pain score and angular deformity were recorded. The mean range of movement of the operated knee was significantly reduced, and was particularly evident in those knees having a double osteotomy. We conclude that double osteotomies tend to have a higher incidence of complications, including impaired movement, and are not more efficient in relieving pain than single osteotomies in either OA or RA.
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