Lee Wei Ting, Chin Pak Lin, Lo Ngai Nung, Yeo Seng Jin
Department of Orthopaedic Surgery, Singapore General Hospital.
J Orthop Surg (Hong Kong). 2015 Apr;23(1):71-5. doi: 10.1177/230949901502300117.
To compare the short-term functional outcome after computer-assisted total knee arthroplasty (TKA) versus conventional TKA.
23 men and 67 women aged 48 to 80 years were randomised to undergo (1) conventional TKA using an intramedullary guide, (2) conventional TKA using an extramedullary guide, or (3) computer-assisted TKA. Two senior surgeons performed all the TKAs using the same TKA system and the standard anteromedial arthrotomy with eversion of the patella. Patients were assessed by physiotherapists before and 6 months and 2 years after TKA using the Short Form-36 Health Survey, Oxford Knee Score, and Knee Society Score.
Of the 90 patients, 67 and 70 were assessed at 6 months and 2 years after TKA, respectively. No patient developed deep infection or required revision surgery. Functional outcomes of the 3 groups did not differ significantly at the corresponding follow-ups.
Significant improvement in the functional outcome was not shown in patients treated with computer-assisted TKA, compared with conventional TKA. Thus, computer-assisted TKA has limited additional short-term benefits. Further studies with longer follow-up are required to examine the benefits of computer-assisted TKA.
比较计算机辅助全膝关节置换术（TKA）与传统TKA术后的短期功能结局。
将23名男性和67名年龄在48至80岁之间的女性随机分组，接受（1）使用髓内导向器的传统TKA，（2）使用髓外导向器的传统TKA，或（3）计算机辅助TKA。两名资深外科医生使用相同的TKA系统和标准的髌前内侧关节切开术并外翻髌骨进行所有TKA手术。在TKA术前、术后6个月和2年，由物理治疗师使用简明健康调查问卷（Short Form-36 Health Survey）、牛津膝关节评分和膝关节协会评分对患者进行评估。
90名患者中，分别有67名和70名在TKA术后6个月和2年接受了评估。没有患者发生深部感染或需要翻修手术。在相应的随访中，三组的功能结局没有显著差异。
与传统TKA相比，计算机辅助TKA治疗的患者在功能结局方面没有显著改善。因此，计算机辅助TKA的短期额外益处有限。需要进行更长时间随访的进一步研究来检验计算机辅助TKA的益处。
