Hernandez-Vaquero Daniel, Noriega-Fernández Alfonso, Roncero-González Sergio
Department of Surgery, School of Medicine, University of Oviedo, Oviedo, ESP.
Department of Orthopedics and Traumatology, Hospital Universitario San Agustin, Avilés, ESP.
Cureus. 2024 Feb 23;16(2):e54745. doi: 10.7759/cureus.54745. eCollection 2024 Feb.
Background Technologies such as navigation and robotics are aimed at improving tibial alignment in total knee arthroplasties (TKA) and eliminating the errors resulting from the use of manual instrumentation. Methods This prospective study analyzed 130 arthroplasties in order to determine whether navigation can improve the frontal mechanical axis of the tibia and whether the postoperative angulation of this axis differs from the preoperative one. The mean patient age was 71.8 years, and the mean BMI was 31.17. Eighty-six patients were female. The same cemented TKA model and the same imageless navigation system were used in all cases. Results The mean postoperative tibial angle following implantation was 87.65°, without any statistically significant differences with respect to the previous angulation. However, navigation was seen to result in a nearly neutral tibial axis, a larger number of cases (41.5%-60.8% {p = 0.002}) aligned within the safe zone (90° ± 3°), a smaller number of outliers, and a clustering of values around the mean. Conclusions Navigation improves the frontal positioning of the tibial component in total knee arthroplasties but does not offer any advantages as compared with conventional instrumentation.
背景 导航和机器人技术等旨在改善全膝关节置换术（TKA）中胫骨对线并消除使用手动器械所产生的误差。方法 这项前瞻性研究分析了130例关节置换术，以确定导航是否能改善胫骨的额状面机械轴，以及该轴术后的角度与术前是否不同。患者平均年龄为71.8岁，平均体重指数为31.17。86例患者为女性。所有病例均使用相同的骨水泥型TKA模型和相同的无图像导航系统。结果 植入后胫骨平均术后角度为87.65°，与之前的角度相比无统计学显著差异。然而，导航可使胫骨轴接近中立位，更多病例（41.5%-60.8% {p = 0.002}）在安全区（90°±3°）内对线，异常值较少，且数值围绕平均值聚集。结论 导航可改善全膝关节置换术中胫骨部件的额状面定位，但与传统器械相比并无优势。
