Herry Yannick, Batailler Cécile, Lording Timothy, Servien Elvire, Neyret Philippe, Lustig Sebastien
Centre Albert-Trillat, CHU Lyon Croix-Rousse, Hospices Civils de Lyon, 69004, Lyon, France.
Melbourne Orthopaedic Group, Melbourne, VIC, Australia.
Int Orthop. 2017 Nov;41(11):2265-2271. doi: 10.1007/s00264-017-3633-9. Epub 2017 Sep 14.
Joint-line restitution is one objective of unicompartmental knee arthroplasty (UKA). However, the joint line is often lowered when resurfacing femoral implants are used. The aim of this study was to compare the joint-line height in UKA performed by robotic-assisted and conventional techniques.
This retrospective case-control study compared two matched groups of patients receiving a resurfacing UKA between 2013 and 2016 by either a robotic-assisted (n = 40) or conventional (n = 40) technique. Each group comprised 27 women and 13 menm wuth a mean age of 69 and 68 years, respectively. Indications for surgery were osteoarthritis (n = 35) and condylar osteonecrosis (n = 5). Two validated radiologic measurement methods were used to assess joint-line height.
Forty UKA (23 medial and 17 lateral) were analysed in each group. Restitution of joint-line height was significantly improved in the robotic-assisted group compared than the control group: +1.4 mm ±2.6 vs +4.7 mm ± 2.4 (p < 0.05) as assessed using method 1, and +1.5 mm ±2.3 vs +4.6 mm ±2.5 (p < 0.05) as assessed using method 2.
Restitution of joint-line height in resurfacing UKA can be improved with robotic-assisted surgery. Improvement in clinical outcome measures must be demonstrated with long-term studies.
关节线恢复是单髁膝关节置换术（UKA）的一个目标。然而，使用股骨表面置换植入物时，关节线常降低。本研究的目的是比较机器人辅助技术和传统技术进行单髁膝关节置换术时的关节线高度。
这项回顾性病例对照研究比较了2013年至2016年间接受表面置换单髁膝关节置换术的两组匹配患者，一组采用机器人辅助技术（n = 40），另一组采用传统技术（n = 40）。每组包括27名女性和13名男性，平均年龄分别为69岁和68岁。手术适应症为骨关节炎（n = 35）和髁部骨坏死（n = 5）。使用两种经过验证的放射学测量方法评估关节线高度。
每组分析了40例单髁膝关节置换术（23例内侧和17例外侧）。与对照组相比，机器人辅助组的关节线高度恢复明显改善：使用方法1评估时为+1.4 mm±2.6 vs +4.7 mm±2.4（p < 0.05），使用方法2评估时为+1.5 mm±2.3 vs +4.6 mm±2.5（p < 0.05）。
机器人辅助手术可改善表面置换单髁膝关节置换术的关节线高度恢复。长期研究必须证明临床结局指标的改善情况。
