Tang Hengtao, Zhao Liang, Yan Hua, Jin Dadi, Su Xuntong
Department of Orthopedics, the Third Hospital Affiliated to Nanfang Medical University, Guangzhou Guangdong, 510630, P R China.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2012 Jan;26(1):17-20.
To evaluate the mid-term effectiveness of Oxford Unicompartmental Knee system Phase III for medial unicompartmental knee osteoarthritis (OA).
Between December 2008 and August 2010, 26 patients (32 knees) with medial unicompartmental knee OA were treated. Of 26 patients, 11 were followed up more than 2 years, including 7 males and 4 females (14 knees, 6 left and 8 right knees) with an average age of 62.4 years (range, 50-74 years). All patients had load suffering and tenderness of medial unicompartmental knee, and complicated by varus deformity without limitation of flexion and extension; the disease duration ranged 5-23 years (mean, 11.6 years). According to Ahlback staging, 4 knees were at stage II and 10 knees at stage III. Cemented unicompartmental knee arthroplasty (Oxford Unicompartmental Knee system Phase III) was performed by minimally invasive technique.
All the incisions were primary healing after operation. Five cases suffered from local ache in the pes anserinus during the first 3 months after operation, which was cured after conservative therapy. Of them, 11 patients were followed up 27.5 months on average (range, 24-30 months). During follow-up, no complication of prosthesis loosening, displacement, arthropathy in the opposite department, or the patellofemoral joint occurred. The range of motion was significantly improved from (109.2 +/- 8.7) degrees preoperatively to (123.5 +/- 6.7) degrees at last followup (P < 0.05); knee society score (KSS) and Western Ontario and McMaster University Osteoarthritis Index (WOMAC) scores were all significantly improved (P < 0.05). At last follow-up, the femoro-tibial angle was significantly improved (P < 0.05); tibial plateau and the tibial anatomical axis increased, showing no significant difference (P > 0.05); and posterior tibial slope was significantly decreased (P < 0.05).
Oxford Unicompartmental Knee system Phase III has satisfactory mid-term effectiveness in treating medial unicompartmental knee OA with the advantages of little trauma and rapid recovery, but long-term effectiveness is expected for further follow-up.
评估牛津单髁膝关节系统Ⅲ期治疗内侧单髁膝关节骨关节炎（OA）的中期疗效。
2008年12月至2010年8月，对26例（32膝）内侧单髁膝关节OA患者进行治疗。26例患者中，11例随访时间超过2年，其中男性7例，女性4例（14膝，左膝6例，右膝8例），平均年龄62.4岁（范围50 - 74岁）。所有患者均有内侧单髁膝关节负重痛及压痛，合并内翻畸形，屈伸无受限；病程5 - 23年（平均11.6年）。根据阿尔巴克分期，Ⅱ期4膝，Ⅲ期10膝。采用微创技术行骨水泥固定单髁膝关节置换术（牛津单髁膝关节系统Ⅲ期）。
术后所有切口均一期愈合。5例患者术后前3个月出现鹅足局部疼痛，经保守治疗后治愈。其中11例患者平均随访27.5个月（范围24 - 30个月）。随访期间，未发生假体松动、移位、对侧关节病或髌股关节并发症。活动范围从术前的（109.2±8.7）度显著改善至末次随访时的（123.5±6.7）度（P < 0.05）；膝关节协会评分（KSS）和西安大略和麦克马斯特大学骨关节炎指数（WOMAC）评分均显著改善（P < 0.05）。末次随访时，股骨 - 胫骨角显著改善（P < 0.05）；胫骨平台及胫骨解剖轴增加，差异无统计学意义（P > 0.05）；胫骨后倾角显著减小（P < 0.05）。
牛津单髁膝关节系统Ⅲ期治疗内侧单髁膝关节OA中期疗效满意，具有创伤小、恢复快的优点，但长期疗效有待进一步随访观察。
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