In vivo kinematic analysis of squatting after total hip arthroplasty
In vivo kinematic analysis of squatting after total hip arthroplasty
复制标题
DOI：
10.1016/j.clinbiomech.2010.11.006
复制
发表时间：
2011-06-01
影响因子：
1.8
通讯作者：
Sugamoto, Kazuomi
中科院分区：
文献类型：
--
作者：
Koyanagi, Junichiro;Sakai, Takashi;Sugamoto, Kazuomi
背景：全髋关节置换术后下蹲的体内运动学尚不清楚。本研究的目的是确定髋关节的运动范围，在蹲后全髋关节置换术。方法：使用荧光透视，我们调查了15个主要的非骨水泥全髋关节置换术使用计算机断层扫描为基础的导航系统。使用了边缘周围有凹陷的髋臼部件和股骨颈几何形状减小的股骨部件。髋臼和股骨组件的运动的基础上中立的立场进行了分析，使用二维到三维registration technology.Findings：没有假体撞击发生在任何髋关节。平均最大髋关节屈曲活动度为86.2度（范围：55.1度-117.4度），并不总是与最大下蹲一致。平均最大骨盆后倾角为25.7度（范围：5.5度-43.5度）。骨盆在髋关节屈曲活动度的50 °-70 °处开始向后倾斜。在最大下蹲时，骨盆后倾角与股骨屈曲角的平均比值为23.2%（范围：3.8%-45.7%）。达到理论假体撞击的平均最小角度为26.2度（范围：11.8度-39.8度）。释义：虽然这是一个初步的研究，三维评估动态蹲运动全髋关节置换术后，使用二维到三维注册技术似乎能够阐明髋关节的活动范围，骨盆后倾的贡献，和最小的角度，理论假体撞击在蹲。(C)2010爱思唯尔有限公司版权所有。
Background: The in vivo kinematics of squatting after total hip arthroplasty is unclear. The purpose of the present study was to determine the range of motion of the hip joint during squatting after total hip arthroplasty.Methods: Using fluoroscopy, we investigated 15 primary cementless total hip arthroplasties performed using a computed tomography-based navigation system. An acetabular component with concavities around the rim and a femoral component with reduced neck geometry were used. The motion of the acetabular and femoral components based on the neutral standing position was analyzed using a two-dimensional to three-dimensional registration technique.Findings: No prosthetic impingement occurred in any hips. The mean maximum hip flexion range of motion was 86.2 degrees (range, 55.1 degrees-117.4 degrees) and was not always consistent with maximum squatting. The mean maximum pelvic posterior tilting angle was 25.7 degrees (range, 5.5 degrees-43.5 degrees). The pelvis began to tilt posteriorly at 50 degrees-70 degrees of the hip flexion range of motion. At maximum squatting, the mean ratio of the pelvic posterior tilting angle to the femoral flexion angle was 23.2% (range, 3.8%-45.7%). The mean minimum angle up to the theoretical prosthetic impingement was 26.2 degrees (range, 11.8 degrees-39.8 degrees). Interpretation: Although this is a preliminary study, three-dimensional assessment of dynamic squatting motion after total hip arthroplasty using the two-dimensional to three-dimensional registration technique appears to enable elucidation of the range of motion of the hip joint, the contribution of pelvic posterior tilting, and the minimum angle up to theoretical prosthetic impingement during squatting. (C) 2010 Elsevier Ltd. All rights reserved.