Smith Julie R, Riches Philip E, Rowe Philip J
Centre for Robotic Orthopaedic Surgery at Strathclyde, Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK.
Int J Med Robot. 2014 Jun;10(2):162-9. doi: 10.1002/rcs.1522. Epub 2013 Aug 11.
Unicondylar knee replacement is technically challenging and malalignment of the implant components is one of the factors that results in high failure rates. Surgical robotics with navigation is emerging as a potential solution to improve the accuracy of implant placement.
The accuracy of performing unicondylar knee replacement using a freehand sculpting, semi-active robotic tool was investigated using 20 synthetic femurs and tibia. Resultant femoral and tibial implant placement was compared to the planned implant position.
The maximum rotational error was 3.2(o) and RMS angular error was 1.46(o) across all orientations, for both the tibia and femoral implants. The maximum translational error was 1.18 mm and the RMS translational error across all directions was 0.61 mm.
The freehand sculpting tool produced accurate implant placement with small errors comparable to those reported by other robotic-assistive devices on the market for unicondylar knee replacement.
单髁膝关节置换术在技术上具有挑战性，植入部件排列不齐是导致高失败率的因素之一。带有导航的手术机器人技术正在成为提高植入物放置准确性的一种潜在解决方案。
使用20个合成股骨和胫骨，研究了使用徒手塑形的半主动机器人工具进行单髁膝关节置换术的准确性。将最终的股骨和胫骨植入物放置位置与计划的植入物位置进行比较。
胫骨和股骨植入物在所有方向上的最大旋转误差为3.2°，均方根角误差为1.46°。最大平移误差为1.18毫米，所有方向上的均方根平移误差为0.61毫米。
徒手塑形工具产生的植入物放置准确，误差小，与市场上其他用于单髁膝关节置换的机器人辅助设备所报告的误差相当。
