Bone Deficiency in Total Knee Arthroplasty

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 imporved 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 progresive.