XXXX metallic hemiarthroplasty of the knee in @entity571 . Long-term clinical follow-up and current indications.

@entity1 @entity571 @entity58837 @entity281 @entity3527
Forty @entity1 with forty-four unicompartmental @entity58837 metallic uncemented hemiarthroplasties were followed for five to thirteen years (average, eight years). Thirty-nine knees had a medial and five, a lateral arthroplasty. The age at surgery ranged from thirty-two to eight-two years (average, sixty-seven years). At the final follow-up, 70 per cent of the knees were rated as good or excellent. Seventy-nine per cent of the knees in @entity1 who were less than sixty-five years old at the time of surgery were in these categories. Six knees (14 per cent) had required revision to either a unicompartmental or a bicompartmental total knee replacement. The average preoperative and postoperative knee flexion did not change, but knees with initially poor motion improved. The average preoperative flexion contracture of 10 degrees improved postoperatively to 5 degrees. Complications were rare and no cases of @entity281 , or clinically detectable @entity3527 occurred. Obesity did not seem to adversely affect the outcome. This study indicated that the @entity58837 unicompartmental metallic hemiarthroplasty can provide an attractive alternative in the treatment of @entity571 when proximal tibial osteotomy is contraindicated or has failed or when the @entity1 is too young, heavy, or active to consider total knee replacement.
