机器人辅助全膝关节置换术准确地恢复关节线和机械轴。一项前瞻性随机研究。

Robot-assisted total knee arthroplasty accurately restores the joint line and mechanical axis. A prospective randomised study.

机构信息

Orthopaedic Surgery Department, Singapore General Hospital, Singapore.

出版信息

J Arthroplasty. 2014 Dec;29(12):2373-7. doi: 10.1016/j.arth.2013.12.010. Epub 2013 Dec 14.

DOI:10.1016/j.arth.2013.12.010

Abstract

Robot-assisted Total Knee Arthroplasty (TKA) improves the accuracy and precision of component implantation and mechanical axis (MA) alignment. Joint-line restoration in robot-assisted TKA is not widely described and joint-line deviation of>5mm results in mid-flexion instability and poor outcomes. We prospectively randomised 60 patients into two groups: 31 patients (robot-assisted), 29 patients (conventional). No MA outliers (>±3° from neutral) or notching was noted in the robot-assisted group as compared with 19.4% (P=0.049) and 10.3% (P=0.238) respectively in the conventional group. The robot-assisted group had 3.23% joint-line outliers (>5mm) as compared to 20.6% in the conventional group (P=0.049). Robot-assisted TKA produces similar short-term clinical outcomes when compared to conventional methods with reduction of MA alignment and joint-line deviation outliers.

摘要

机器人辅助全膝关节置换术（TKA）可提高组件植入和机械轴（MA）对准的准确性和精度。机器人辅助 TKA 中的关节线恢复并未广泛描述，关节线偏差>5mm 会导致中屈曲不稳定和预后不良。我们前瞻性地将 60 例患者随机分为两组：31 例（机器人辅助），29 例（常规）。与常规组的 19.4%（P=0.049）和 10.3%（P=0.238）相比，机器人辅助组的 MA 无明显偏斜（>±3°偏离中立位）或切迹。机器人辅助组有 3.23%的关节线偏差>5mm，而常规组为 20.6%（P=0.049）。与传统方法相比，机器人辅助 TKA 可减少 MA 对准和关节线偏差的偏倚，从而产生相似的短期临床结果。