基于计算机断层扫描导航的髋关节表面置换术的临床准确性和精密度。
Clinical accuracy and precision of hip resurfacing arthroplasty using computed tomography-based navigation.
机构信息
Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
Department of Orthopaedic Surgery, The Jikei University School of Medicine, 3-25-8, Nishishimbashi, Minato-ku, Tokyo, 105-8461, Japan.
出版信息
Int Orthop. 2019 Aug;43(8):1807-1814. doi: 10.1007/s00264-018-4113-6. Epub 2018 Aug 22.
PURPOSE
To avoid malalignment of components during hip resurfacing arthroplasty (HRA), we used a computed tomography (CT)-based navigation system for guidance. This study aimed to evaluate the clinical accuracy and precision of HRA performed using the CT-based navigation systems.
METHODS
HRA was performed on 17 hips guided by the CT-based navigation systems. We measured cup alignment deviation, deviation of the stem position, and alignment from the plan by image matching between pre-operative and post-operative CT images.
RESULTS
Cup anteversion was within 5° of that in the plan in all cases. Cup inclination was within 5° of that in the plan in 82.4% and within 10° in all cases. The angular difference of the stem was within 5° in all cases, and the entry point of the stem was within 4 mm in all cases.
CONCLUSION
The CT-based navigation system for HRA guided accurate component placement according to the plan.
目的
为了避免髋关节表面置换术（HRA）过程中组件的对位不良，我们使用了基于计算机断层扫描（CT）的导航系统进行引导。本研究旨在评估基于 CT 的导航系统引导的 HRA 的临床准确性和精确性。
方法
使用基于 CT 的导航系统对 17 髋进行了 HRA。我们通过术前和术后 CT 图像之间的图像匹配来测量杯的对准偏差、柄的位置偏差以及与计划的对准。
结果
所有情况下，杯前倾角均在计划值的 5°以内。82.4%的情况下杯倾斜度在计划值的 5°以内，所有情况下均在 10°以内。所有情况下，柄的角度差均在 5°以内，所有情况下柄的入口点均在 4mm 以内。
结论
基于 CT 的 HRA 导航系统可根据计划引导准确的组件放置。
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