不同位置内外上髁轴线对多层螺旋CT容积再现测量肱骨头扭转角的影响Effect of transepicondylar axis of different position on volume rendering technique measuring the humeral head retroversion angle with multi-slice spiral CT
李锦青;王健;唐康来;陈伟;
摘要(Abstract):
[目的]探讨肱骨远端不同位置内外上髁轴线对多层螺旋CT容积再现三维重建测量肱骨头扭转角的影响。[方法]收集51根肱骨干标本,行16排螺旋CT扫描,容积再现技术三维重建测量肱骨头扭转角。俯视位观察,肱骨远端内外上髁连线取3种不同方位,求得3组肱骨头扭转角。与二维CT取肱骨远端3个不同平面的肱骨头扭转角进行对比研究。[结果]肱骨头扭转角最小值4°,最大值59.8°,6组肱骨头扭转角数据为(25.5±10.2)°,(25.0±10.8)°,(25.7±10.8)°,(27.3±10.3)°,(26.3±10.2)°,(25.8±10.4)°,经统计学处理6组肱骨头扭转角差异不显著。且二维CT测量肱骨头扭转角时肱骨远端层面越向远端值越小。[结论]肱骨头扭转角变异较大,肩关节假体扭转角设计应个性化;肱骨远端不同位置内外上髁轴线对多层螺旋CT容积再现测量肱骨头扭转角没有影响;俯视位观察肱骨,当外上髁露出呈小三角形、肱骨远端前关节面被肱骨头遮盖重叠的位置是多层螺旋CT三维重建测量肱骨头扭转角的更简单、更快捷而且准确的测量位置。
关键词(KeyWords): 肱骨头;扭转角;体层摄影术;X线计算机;假体
基金项目(Foundation): 重庆市自然科学基金资助(NO2004BB5245)
作者(Author): 李锦青;王健;唐康来;陈伟;
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DOI:
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