Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
BEIJING HURWA-ROBOT Medical Technology Co.Ltd, Beijing, China.
Int J Med Robot. 2021 Aug;17(4):e2264. doi: 10.1002/rcs.2264. Epub 2021 Apr 25.
We investigated the accuracy and safety of a new HURWA robotic-assisted total knee arthroplasty (TKA) system in a sheep model.
Ten male small-tailed Han sheep were used in this study. Sheep were imaged by computed tomography scan before and after bone resection and the cutting errors between actual bone preparation and preoperative planning of the femur and tibia in three dimensions were measured.
The overall accuracies after surgery compared with that from preoperative surgical planning of the left and right femurs were 1.93 ± 1.02° and 1.93 ± 1.23°, respectively. Additionally, similarly high overall accuracies for the left and right tibia of 1.26 ± 1.04 and 1.68 ± 0.92°, respectively, were obtained. The gap distances of the distal cut, anterior chamfer, anterior cut, posterior chamfer and posterior cut on the medial side were 0.47 ± 0.35 mm, 0.41 ± 0.37 mm, 0.12 ± 0.26 mm, 0.41 ± 0.44 mm and 0.12 ± 0.23 mm, respectively. No intraoperative complications, such as intraoperative fracture, massive bleeding or death, occurred.
This new HURWA robotic-assisted TKA system is an accurate and safe tool for TKA surgery based on the sheep model.
我们研究了一种新的 HURWA 机器人辅助全膝关节置换术（TKA）系统在绵羊模型中的准确性和安全性。
本研究使用了 10 只雄性小尾寒羊。在骨切除前后，通过计算机断层扫描对绵羊进行成像，并测量股骨和胫骨的实际骨准备与术前规划之间的三维切割误差。
术后与左右股骨术前手术规划相比，整体准确性分别为 1.93±1.02°和 1.93±1.23°。此外，左右胫骨的整体准确性也很高，分别为 1.26±1.04°和 1.68±0.92°。内侧的远端切口、前倒角、前切口、后倒角和后切口的间隙距离分别为 0.47±0.35mm、0.41±0.37mm、0.12±0.26mm、0.41±0.44mm 和 0.12±0.23mm。术中无并发症发生，如术中骨折、大量出血或死亡。
基于绵羊模型，这种新的 HURWA 机器人辅助 TKA 系统是一种准确、安全的 TKA 手术工具。
