A comparison of gait one year post operation in an RCT of robotic UKA versus traditional Oxford UKA

Arman Motesharei, Philip Rowe, Mark Blyth, Bryn Jones, Angus Maclean

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Robot-assisted unicompartmental knee surgery has been shown to improve the accuracy of implant alignment. However, little research has been conducted to ascertain if this results in a measureable improvement in knee function post operatively and a more normal gait. The kinematics of 70 OA knees were assessed using motion analysis in an RCT (31 receiving robotic-assisted surgery, and 39 receiving traditional manual surgery) and compared to healthy knees. Statistically significant kinematic differences were seen between the two surgical groups from foot-strike to mid-stance. The robotic-assisted group achieved a higher knee excursion (18.0°, SD 4.9°) compared to the manual group (15.7°, SD 4.1°). There were no significant difference between the healthy group and the robotic assisted group, however there was a significant difference between the healthy group and the manual group (p < 0.001). Hence robotically-assisted knee replacement with Mako Restoris Implants appears to lead not only to better implant alignment but also some kinematic benefits to the user during gait.

Original languageEnglish
Pages (from-to)41-45
Number of pages5
JournalGait and Posture
Early online date6 Mar 2018
Publication statusPublished - 1 May 2018


  • gait
  • kinematics
  • robotic-assisted arthroplasty
  • unicompartmental knee replacement
  • walking

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