Southern General Hospital, 1345 Govan Road, Glasgow G51 4TF, UK.
Bone Joint J. 2013 Nov;95-B(11):1497-9. doi: 10.1302/0301-620X.95B11.32257.
We reviewed the long-term clinical and radiological results of 63 uncemented Low Contact Stress (LCS) total knee replacements (TKRs) in 47 patients with rheumatoid arthritis. The mean age of the patients at the time of surgery was 69 years (53 to 81). At a mean follow-up of 22 years (20 to 25), 12 patients were alive (17 TKRs), 27 had died (36 TKRs), and eight (ten TKRs) were lost to follow-up. Revision was necessary in seven patients (seven TKRs, 11.1%) at a mean of 12.1 years (0 to 19) after surgery. In the surviving ten patients who had not undergone revision (15 TKRs), the mean Oxford knee score was 30.2 (16 to 41) at a mean follow-up of 19.5 years (15 to 24.7) and mean active flexion was 105° (90° to 150°). The survival rate was 88.9% at 20 years (56 of 63) and the Kaplan-Meier survival estimate, without revision, was 80.2% (95% confidence interval 37 to 100) at 25 years.
我们回顾了 47 例类风湿关节炎患者 63 例非骨水泥低接触应力（LCS）全膝关节置换术（TKR）的长期临床和影像学结果。手术时患者的平均年龄为 69 岁（53 至 81 岁）。平均随访 22 年（20 至 25 年）后，12 例患者存活（17 例 TKR），27 例死亡（36 例 TKR），8 例（10 例 TKR）失访。术后 12.1 年（0 至 19 年），7 例患者（7 例 TKR，11.1%）需要进行翻修。在未接受翻修的 10 例存活患者中（15 例 TKR），平均牛津膝关节评分在 19.5 年（15 至 24.7 年）的平均随访中为 30.2（16 至 41），平均主动屈曲度为 105°（90°至 150°）。20 年时的生存率为 88.9%（63 例中的 56 例），无翻修的 Kaplan-Meier 生存估计为 25 年时的 80.2%（95%置信区间 37 至 100）。
