Dome osteotomy of the tibia for osteoarthritis of the knee.

Dome osteotomy of the tibia was performed for osteoarthritis of the medial knee compartment in 54 knees (48 patients). All patients were reviewed after a mean follow-up period of 5-7 years (range: 2 to 10 years). At follow-up, 42 knees (78 per cent) were rated good or excellent, according to the Hospital for Special Surgery Knee Service Rating System (H.S.S.). Twelve knees (22 per cent) were rated fair or poor, according to the H.S.S. score. A highly significant correlation (p less than 0.01) was found between the H.S.S. score and the preoperative grade of osteoarthritis, as well as between the H.S.S. score and the grade of preoperative laxity. Immediate postoperative complications occurred in 19 knees (35 per cent), although without significant influence on the final clinical outcome. Revision surgery had to be performed in 6 knees.