Wilder D G, Pope M H, Frymoyer J W
Spine (Phila Pa 1976). 1980 Nov-Dec;5(6):575-9. doi: 10.1097/00007632-198011000-00014.
This work analyzes the motion permitted by the topography of the sacroiliac joint surface. Gross contour profiles of the joint were recorded in the frontal and sagittal planes. Best-fit axes of rotation for each contour profile were obtained by statistical methods and were compared with those reported in the literature. There was considerable scatter of the locations of the most likely centers, or axes, of rotation in the frontal and sagittal planes. Were motion to occur about these axes, the articular surfaces would first separate by a distance sufficient to allow them to move over one another. Energy would be needed to separate the joint surfaces being pulled together by the surrounding ligaments. Thus, the sacroiliac joint may function as a shock- absorbing structure by virtue of energy absorbed in the ligamentous tissue.
这项研究分析了骶髂关节表面形态所允许的运动。在额状面和矢状面记录了关节的大致轮廓曲线。通过统计方法获得每个轮廓曲线的最佳拟合旋转轴，并与文献报道的结果进行比较。在额状面和矢状面中，最可能的旋转中心或轴的位置存在相当大的离散度。如果围绕这些轴发生运动，关节面将首先分开一段足以使其相互移动的距离。需要能量来分开被周围韧带拉在一起的关节面。因此，骶髂关节可能凭借在韧带组织中吸收的能量而起到减震结构的作用。
