Scott R D, Cobb A G, McQueary F G, Thornhill T S
Brigham and Womens Hospital, Boston, Massachusetts.
Clin Orthop Relat Res. 1991 Oct(271):96-100.
One hundred consecutive unicondylar knee arthroplasties were reviewed after eight to 12 years of follow-up evaluation. Eighteen patients (19 knees) had died, four patients (four knees) were lost to follow-up evaluation, and 13 patients (13 knees) had revision. Survivorship analysis revealed 90% survivorship of the prostheses at nine years, 85% at ten years, and 82% at 11 years. Sixty-four knees in 51 patients were studied clinically and roentgenographically at final follow-up study. Of these, 87% had no significant pain. The average knee flexion was 115 degrees. Anatomic knee alignment averaged 3 degrees of valgus for the knees with preoperative varus alignment and 8 degrees of valgus for knees with preoperative valgus alignment. Fifteen percent of these elderly patients (mean age, 80 years) used a cane outdoors, but only 8% because of their knee. Sixty percent had radiolucent lines at the tibial bone-cement interface, and these lines were incomplete in 96% of cases.
对连续100例单髁膝关节置换术患者进行了8至12年的随访评估。18例患者（19膝）死亡，4例患者（4膝）失访，13例患者（13膝）进行了翻修。生存分析显示，假体在9年时的生存率为90%，10年时为85%，11年时为82%。在最终随访研究中，对51例患者的64膝进行了临床和影像学研究。其中，87%无明显疼痛。膝关节平均屈曲度为115度。术前有内翻畸形的膝关节，解剖学膝关节对线平均外翻3度；术前有外翻畸形的膝关节，解剖学膝关节对线平均外翻8度。这些老年患者（平均年龄80岁）中有15%在户外使用手杖，但因膝关节问题使用手杖的仅占8%。60%的患者在胫骨骨水泥界面有透亮线，其中96%的病例这些线不完整。
