Department of Orthopaedic Surgery, Singapore General Hospital, Singapore.
J Arthroplasty. 2015 Oct;30(10):1724-8. doi: 10.1016/j.arth.2015.04.007. Epub 2015 Apr 11.
Patient-specific instrumentation (PSI) surgery may represent the next advancement in total knee arthroplasty (TKA). In 2011, 60 patients were prospectively recruited and divided into two groups based on the patient's choice: (1) PSI surgery; and (2) conventional TKA. At two years after surgery, the Knee Society Function Score, Oxford Knee Score and SF-36 scores were comparable between the two groups. Although the Knee Society Knee Score (KSKS) was 9 ± 3 points better in the PSI group (P=0.008), the two years improvement in KSKS was comparable between the two groups. None of the patients required revision surgery. These findings cannot justify the additional costs and waiting time incurred by the patients with PSI surgery in the practice of a high volume surgeon.
患者特异性手术器械（PSI）手术可能代表着全膝关节置换术（TKA）的下一个进步。2011 年，前瞻性招募了 60 名患者，并根据患者的选择将其分为两组：（1）PSI 手术；和（2）常规 TKA。手术后两年，两组的膝关节协会功能评分（Knee Society Function Score）、牛津膝关节评分（Oxford Knee Score）和 SF-36 评分相当。尽管 PSI 组的膝关节协会膝关节评分（Knee Society Knee Score，KSKS）高出 9±3 分（P=0.008），但两组 KSKS 的两年改善情况相当。没有患者需要接受翻修手术。这些发现并不能证明高容量外科医生在 PSI 手术中为患者带来的额外成本和等待时间是合理的。
