髋臼唇的形态学研究及其意义

Morphologic study of the acetabular labrum

目的:探讨髋臼唇的形态及在髋关节生物力学行为中的作用。方法:取成人髋关节标本60个,测量髋臼唇在距髋臼顶点前后30°、60°、90°、135°处的宽度和厚度,观察髋臼唇撕裂的位置,测量大小,测量由髋臼唇增加的髋臼腔的容积。结果:髋臼唇在距髋臼顶点前90°最宽(8.82±2.20)mm,在髋臼顶点处最厚(5.56±1.56)mm。髋臼唇撕裂的发生率为81.7%(49/60例),多发生在髋臼的前上象限(80%),撕裂的大小为(2.5±0.2)cm(0.5￣4.5cm),髋臼唇可使髋臼腔的容积增加33%。结论:髋臼唇是维持髋关节正常生物力学行为的重要组成部分,髋臼唇撕裂是引起髋部疼痛的原因之一。

Objective： To study the morphology of the acetabular labrum and the effects of it on the biomechanics of the hip joint. Methods： Sixty samples of hip were harvested for this study. The width and thickness of labrum were measured on nine positions： midsuperior, anterosuperior 30° ,60°, 90°, 135°and posterosuperior 30° ,60° ,90°, 135°. The positions and size of labral tears were observed and the increasing volume of coxal cavity was measured. Results： The labrum was the widest at the point of anterosuperior 90° （8.82±2.20） mm and the thickest at the point of midsuperior（5.56±1.56） mm. For hips, the rate of gross labral tears was about 81.7%, most of them （80%） located in the anterior superior quadrant. The average size of the tears expansion was about 2.5 cm （0.5～4.5 cm）. The acetabular labrum could increase of acetabular volume about 33%. Conclusions： The acetabular labrum is an important element of physiological functions of acetabulum, while acetabular labral tear is a biomechanical cause of hip pain.