Kinematic radiography of the hip joint after hip resurfacing arthroplasty
Kinematic radiography of the hip joint after hip resurfacing arthroplasty
复制标题
髋关节表面置换术后髋关节的运动X线摄影
DOI：
10.1007/s12194-016-0357-2
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发表时间：
2016
影响因子：
1.6
通讯作者：
Ichikawa K
中科院分区：
文献类型：
--
作者：
Kawashima H;Kajino Y;Kabata T;Tsuchiya H;Sanada S;Ichikawa K
本研究旨在评价髋关节表面置换术（HRA）后使用动态平板探测器（FPD）系统进行动态X线摄影的有效性。共纳入26例接受HRA的患者的32个髋关节。使用FPD系统获得仰卧位主动外展和45°半侧位屈曲的序列图像。我们检查了在最大运动时髋臼假体和股骨颈之间的撞击的影像学表现。测量髋臼侧和股骨头侧的中心分量坐标。对于外展运动，在2个（6.3%）髋关节中检测到股骨颈上级部分和髋臼部件之间的撞击。对于屈曲运动，在19个（59.4%）髋关节中检测到撞击。撞击后髋臼假体和股骨颈之间没有发现半脱位，但观察到腰椎和骨盆屈曲的协同运动。无论是否存在撞击，中心距均无显著差异。HRA后髋关节的详细术后运动学表明，所提出的动态FPD系统可以显示获得的撞击和合作运动作为动态图像，并可能显示使用静态图像无法观察到的结果。
This study aimed to evaluate the usefulness of dynamic radiography using a dynamic flat-panel detector (FPD) system after hip resurfacing arthroplasty (HRA). A total of 32 hips of 26 patients who underwent HRA were included. Sequential images of active abduction in the supine position and flexion in the 45° semilateral position were obtained using the FPD system. We examined the imaging findings of impingement between the acetabular component and femoral neck with cooperative motion at maximal exercise. Moreover, the central component coordinate of the acetabulum and femoral head sides was measured. For abduction motion, impingement was detected in two (6.3 %) hips between the superior portion of the femoral neck and acetabular component. For flexion motion, impingement was detected in 19 (59.4 %) hips. There were no findings of subluxation between the acetabular component and femoral neck after impingement, but cooperative motion of lumbar and pelvic flexion was observed. There was no significant difference in the center-to-center distance regardless of the presence or absence of impingement. Detailed postoperative kinematics of the hips after HRA showed that the proposed dynamic FPD system could reveal acquired impingement and cooperative motion as dynamic images and possibly reveal findings that would be unobservable using static images.