Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, Ghent, Belgium.
Department of Trauma and Orthopaedics, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.
Int J Med Robot. 2017 Dec;13(4). doi: 10.1002/rcs.1839. Epub 2017 Jun 15.
The main cause for revision hip arthroscopy surgery is incomplete bony resection of femoroacetabular impingement (FAI). This study aimed to compare the cam resection accuracy via the conventional hip arthroscopy technique with the navigation technique.
Two prospectively randomized groups were recruited: navigated (n = 15) and conventional (n = 14). A pre-operative CT and post-operative MRI scan were obtained in all cases to compare alpha angle, range of motion simulation and determine a pre-operative 3D surgical resection plan.
Post-operatively, the mean maximal alpha angle improved significantly in the navigated group compared with the conventional group (55°vs.66°; P = 0.023), especially in the 12 o' clock position (45°vs.60°; P = 0.041). However, positioning time and radiation exposure were significantly longer in the navigated group.
Navigated surgery is effective for patients with cam type FAI in helping restore normal anatomy, however, not without drawbacks. Larger studies will be required to validate our results.
髋关节镜翻修手术的主要原因是股骨髋臼撞击症（FAI）的骨切除不完全。本研究旨在比较传统髋关节镜技术与导航技术的凸轮切除准确性。
招募了两组前瞻性随机分组：导航组（n=15）和常规组（n=14）。所有病例均在术前进行 CT 扫描和术后 MRI 扫描，以比较 alpha 角、运动范围模拟，并确定术前 3D 手术切除计划。
术后，导航组的最大 alpha 角明显优于常规组（55°vs.66°；P=0.023），尤其是在 12 点钟位置（45°vs.60°；P=0.041）。然而，导航组的定位时间和辐射暴露明显更长。
导航手术对于凸轮型 FAI 患者有效，可以帮助恢复正常解剖结构，但并非没有缺点。需要更大的研究来验证我们的结果。
