Acetabular component orientation in intra- and postoperative positions in total hip arthroplasty
Acetabular component orientation in intra- and postoperative positions in total hip arthroplasty
复制标题
DOI：
10.1007/s00402-008-0638-2
复制
发表时间：
2009-09-01
影响因子：
2.3
通讯作者：
Tada, Koichi
中科院分区：
文献类型：
--
作者：
Hayakawa, Keiko;Minoda, Yukihide;Tada, Koichi
在全髋关节置换术（THA）中，髋臼部件方向对脱位、活动度、聚乙烯磨损、骨盆骨质溶解和部件移位具有至关重要的影响。术中侧卧位髋臼假体置入时骨盆方位与术后仰卧位髋臼假体方位评价时骨盆方位的差异将是造成髋臼假体方位异常值的因素之一。我们对2004年10月至2005年12月期间由同一手术团队实施的100例患者的100例连续初次全髋关节置换术中术中侧卧位和术后仰卧位的髋臼假体方向进行了比较。术中拍摄骨盆侧卧位前后位片，术后拍摄骨盆仰卧位前后位片。用计算机软件测量髋臼成分的垂直倾斜和前倾角，垂直倾斜和前倾角的绝对差值分别为5.3A ° AA +/-A4.5A °（均数+/-ASD）和5.1A ° AA +/-A3.7A °。两种体位的垂直倾斜度差异有统计学意义（P < 0.0001），THA术中应考虑两种体位髋臼假体方位的差异，可能是术中和术后骨盆方位的差异所致。
In total hip arthroplasty (THA), acetabular component orientation has critically important effects on dislocation, range of motion, polyethylene wear, pelvic osteolysis, and component migration. The differences in the pelvic orientation in the intraoperative lateral position for insertion of acetabular component during operation and that in the postoperative supine position for evaluation of acetabular component orientation will be one of the factors, which make outliers in acetabular component orientation. We compared acetabular component orientation between intraoperative lateral position and postoperative supine position in 100 consecutive primary THAs.A total of 100 consecutive primary THAs (between October 2004 and December 2005) in 100 patients performed by a single surgical team were investigated. Intraoperative anteroposterior radiographs of pelvis in the lateral position and postoperative anteroposterior radiographs of pelvis in the supine position were taken. Acetabular component orientation (vertical tilt and anteversion) were measured using computer software.The absolute values of difference between measurements in the two positions were 5.3A degrees A A +/- A 4.5A degrees (mean +/- A SD) for vertical tilt and 5.1A degrees A A +/- A 3.7A degrees for anteversion. The difference in the vertical tilt between the two positions was significant (P < 0.0001).The difference in the acetabular component orientation between the two positions, which might be caused by the difference between intra- and postoperative pelvic orientation, should be considered during THA.