Department of Orthopaedic Surgery, Hokusuikai Kinen Hospital, Ibaraki, Japan.
J Arthroplasty. 2022 Mar;37(3):488-494. doi: 10.1016/j.arth.2021.11.004. Epub 2021 Nov 8.
There have been no studies regarding the effectiveness of augmented reality (AR)-based portable navigation systems compared with accelerometer-based portable navigation systems in total hip arthroplasty (THA).
We retrospectively compared THAs performed using an AR-based portable navigation system (n = 45) and those performed using an accelerometer-based portable navigation system (n = 42). All THAs were performed with the patient in the lateral decubitus position. The primary outcome was the absolute difference between cup placement angles displayed on the navigation screen and those measured on postoperative X-ray.
The mean absolute differences were significantly smaller in the AR-based portable navigation system group than the accelerometer-based portable navigation system group in radiographic inclination (2.5° ± 1.7° vs 4.6° ± 3.1°; 95% confidence interval 1.1°-3.2°, P < .0001). Similarly, the mean absolute differences were significantly better in the AR-based portable navigation system group in radiographic anteversion (2.1° ± 1.8° vs 6.4° ± 4.2°; 95% confidence interval 3.0°-5.7°, P < .0001). Neither hip dislocation, surgical site infection, nor other complications associated with use of the navigation system occurred in either group.
The AR-based portable navigation system may provide more precise acetabular cup placement compared with the accelerometer-based portable navigation system in THA.
目前尚无研究比较基于增强现实（AR）的便携式导航系统与基于加速度计的便携式导航系统在全髋关节置换术（THA）中的有效性。
我们回顾性比较了使用基于 AR 的便携式导航系统（n=45）和使用基于加速度计的便携式导航系统（n=42）进行的 THA。所有 THA 均在侧卧位进行。主要结果是导航屏幕上显示的髋臼杯放置角度与术后 X 射线测量的角度之间的绝对差异。
AR 组的髋臼杯放置角度在影像学倾斜度上的平均绝对差异明显小于基于加速度计的便携式导航系统组（2.5°±1.7° vs 4.6°±3.1°；95%置信区间 1.1°-3.2°，P<.0001）。同样，在影像学前倾角上，AR 组的平均绝对差异也明显更好（2.1°±1.8° vs 6.4°±4.2°；95%置信区间 3.0°-5.7°，P<.0001）。两组均未发生髋关节脱位、手术部位感染或与导航系统使用相关的其他并发症。
与基于加速度计的便携式导航系统相比，AR 组在 THA 中可能提供更精确的髋臼杯放置。
