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本研究应用图像分析仪,测定了50付髋骨与骶骨骶髂关节面的纵径、横径和投影面积。女性骶髂关节面宽而短,关节面上部面积大于男性;男性关节面狭而长,其下部面积大于女性。由于男性髂骨翼近乎垂直,女性接近水平,因而男性骶骨或髂骨关节面角大于女性;女性背侧凹陷更近于下端,这些变化与男、女性小骨盆腔和骨盆倾角的大小相适应,女性骨盆倾角大,关节面上都受力更集中。关节面形状,应力分布,骨质结构与重力传递有关。关节面前缘上部凸向前,而后缘则形成凹陷,应变值测试表明,隆突部应力最大,骨剖面显示隆突部骨密质最厚,骨小梁向隆突集中。上述变化与人体重力由第五腰椎经骶骨、两侧骶髂关节传递于下肢相适应。
In this study, image analyzer was used to determine the longitudinal, transverse diameter and projected area of 50 sacroiliac joints of the hip and sacrum. Female sacroiliac joint surface is wide and short, the upper part of the articular surface is larger than the male; the male articular surface is narrow and long, and its lower area is larger than that of the female. Because the male iliac wing is nearly vertical and the female is close to horizontal, the male sacral or iliac articular surface angle is greater than that of the female; the female dorsal depression is closer to the lower end, and these changes are compatible with the pelvic and pelvic tilt of men and women. Pelvic obliquity, the joint surface are more concentrated force. Articular surface shape, stress distribution, bone structure and gravity transmission related. The anterior superior edge of the joint surface is convex and the posterior edge forms a depression. The strain value test shows that the stress of the maxillary protuberance is the largest, and the bone profile shows the thickest bone mineral density in the protuberance and the trabeculae concentrate to the protuberance. The above changes and human body weight by the fifth lumbar sacral, sacroiliac joint on both sides of the lower limbs to adapt.