UNASSIGNED:精确的髋臼重建历来是一项具有挑战性的手术。3D打印的患者特定指南(PSG)和计算机导航(CN)技术已用于辅助髋臼部件定位和骨盆重建。这种精确的重建方法可以转化为临床益处。
UNASSIGNED:回顾性分析2013年1月至2020年12月在本中心行髋臼周围恶性肿瘤切除术及钉棒-髋臼融合系统重建的84例患者的临床资料。患者分为四组:自由手(FH)组,PSG组,CN组,和PSG结合计算机导航(PSG+CN)组。操作时间,术中失血,并记录透视视图的数量.肿瘤预后,髋臼的射线照相测量,肢体功能数据,比较各组术后并发症。最后,我们评估了假体机械故障的危险因素.
UNASSIGNED:术后X线和计算机断层扫描(CT)显示,患侧和对侧之间的垂直偏移差异(VOD)为8.4±1.9、5.9±2.2、4.1±1.3和2.4±1.2mm。每组的水平偏移差异(HOD)为9.0±1.9、6.1±2.2、3.2±1.3和2.1±1.2mm。相应地;外展角差异(ABAD)为8.6°±1.8°,5.6°±2.0°,2.5°±1.3°,和1.8°±0.9°,前倾角差异(ANAD)分别为5.9°±1.6°,3.6°±1.7°,2.9°±1.6°,和1.9°±0.9°,相应地。统计结果显示,PSG+CN组在髋臼位置和肢体功能方面优于FH组和PSG组(P<0.05)。发现体重指数(P=0.040)和切除类型(P=0.042)是假体机械故障的高危因素。
UNASSIGNED:PSG+CN在提高髋臼定位和重建的准确性和安全性方面具有潜在优势。
UNASSIGNED: The precise acetabular reconstruction has historically been a challenging procedure. 3D-printed patient-specific guide (PSG) and computer navigation (CN) technologies have been used to assist acetabular component positioning and pelvic reconstruction. This precise reconstruction approach may translate into clinical benefit.
UNASSIGNED: The clinical data of 84 patients who underwent periacetabular malignant tumor resection and screw-rod-acetabular cage system reconstruction in our center from January 2013 to December 2020 were retrospectively analyzed. Patients were divided into four groups: free hand (FH) group, PSG group, CN group, and PSG combined with computer navigation (PSG + CN) group. The operation time, intraoperative blood loss, and number of fluoroscopy views were recorded. The oncological prognosis, radiographic measurements of the acetabulum, limb function data, and postoperative complications were compared among groups. And finally, we evaluated the risk factors for mechanical failure of the prosthesis.
UNASSIGNED: The postoperative X-ray and computed tomography (CT) scan revealed that the vertical offset discrepancy (VOD) between affected side and contralateral side was 8.4±1.9, 5.9±2.2, 4.1±1.3, and 2.4±1.2 mm in each groups; the horizontal offset discrepancy (HOD) was 9.0±1.9, 6.1±2.2, 3.2±1.3, and 2.1±1.2 mm, correspondingly; the abduction angle discrepancy (ABAD) was 8.6°±1.8°, 5.6°±2.0°, 2.5°±1.3°, and 1.8°±0.9°, respectively; the anteversion angle discrepancy (ANAD) was 5.9°±1.6°, 3.6°±1.7°, 2.9°±1.6°, and 1.9°±0.9°, correspondingly. Statistical results show that the PSG + CN group was superior to the FH group and the PSG group in terms of acetabular position and limb function (P<0.05). Body mass index (P=0.040) and resection type (P=0.042) were found to be the high-risk factors for mechanical failure of the prosthesis.
UNASSIGNED: PSG + CN has potential advantages in improving the accuracy and safety of acetabular positioning and reconstruction.