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Mayo Clinic, Rochester, MN 55905.
Twenty-eight knees in 25 patients with a metal wedge augmentation for tibial bone deficiency were reviewed at 2.3 +/- 0.6 years (range, 2-3.5) after surgery. A medial side wedge was used in 24 knees and a lateral side wedge in four. The preoperative bone defect size was 12 mm +/- 6 mm on the medial side and 8 mm +/- 2 mm on the lateral side. The knee scores improved from a preoperative mean of 53 +/- 12 to 89 +/- 8 at the last evaluation. There were 79% excellent and 21% good results. There were no complications or reoperations. Radiolucent lines beneath the metal wedge were present in 13 knees but none were progressive.
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