Lim H-C, Bae J-H, Song S-H, Kim S-J
Korea University Medical Center, Guro Hospital, #80 Guro-Dong, Guro-Ku, 152-050 Seoul, Korea.
J Bone Joint Surg Br. 2012 Aug;94(8):1071-6. doi: 10.1302/0301-620X.94B8.29372.
Medium-term survivorship of the Oxford phase 3 unicompartmental knee replacement (UKR) has not yet been established in an Asian population. We prospectively evaluated the outcome of 400 phase 3 Oxford UKRs in 320 Korean patients with a mean age at the time of operation of 69 years (48 to 82). The mean follow-up was 5.2 years (1 to 10). Clinical and radiological assessment was carried out pre- and post-operatively. At five years, the mean Knee Society knee and functional scores had increased significantly from 56.2 (30 to 91) pre-operatively to 87.2 (59 to 98) (p = 0.034) and from 59.2 (30 to 93) to 88.3 (50 to 100) (p = 0.021), respectively. The Oxford knee score increased from a mean of 25.8 (12 to 39) pre-operatively to 39.8 (25 to 58) at five years (p = 0.038). The ten-year survival rate was 94% (95% confidence interval 90.1 to 98.0). A total of 14 UKRs (3.5%) required revision. The most common reason for revision was dislocation of the bearing in 12 (3%). Conversion to a total knee replacement was required in two patients who developed osteoarthritis of the lateral compartment. This is the largest published series of UKR in Korean patients. It shows that the mid-term results after a minimally invasive Oxford phase 3 UKR can yield satisfactory clinical and functional results in this group of patients.
在亚洲人群中，牛津三期单髁膝关节置换术（UKR）的中期生存率尚未得到证实。我们前瞻性地评估了320例韩国患者中400例牛津三期UKR的手术效果，这些患者手术时的平均年龄为69岁（48至82岁）。平均随访时间为5.2年（1至10年）。术前和术后均进行了临床和放射学评估。在术后五年，膝关节协会的膝关节评分和功能评分平均分别从术前的56.2（30至91）显著提高到87.2（59至98）（p = 0.034），以及从59.2（30至93）提高到88.3（50至100）（p = 0.021）。牛津膝关节评分从术前的平均25.8（12至39）提高到五年后的39.8（25至58）（p = 0.038）。十年生存率为94%（95%置信区间90.1至98.0）。共有14例UKR（3.5%）需要翻修。最常见的翻修原因是12例（3%）的假体脱位。两名外侧间室发生骨关节炎的患者需要转换为全膝关节置换术。这是已发表的关于韩国患者UKR的最大系列研究。结果表明，微创牛津三期UKR的中期结果在这组患者中可产生令人满意的临床和功能效果。
