Subperiosteal transmission of intra-articular pressure between articulated and stationary joints.
Subperiosteal transmission of intra-articular pressure between articulated and stationary joints.
复制标题
DOI：
10.1038/srep08103
复制
发表时间：
2015-01-29
影响因子：
4.6
通讯作者：
Pitkin E
中科院分区：
文献类型：
--
作者：
Pitkin M;Muppavarapu R;Cassidy C;Pitkin E
流体静压可以在滑膜囊之间传递。在10只兔子中，我们同时测量两个关节的压力，其中一个是被动的，另一个是保持静止的。固定关节内的关节内压力随着其伙伴关节的活动而变化。而在远侧关节上方切断骨膜后，固定关节内的压力变化不大。在作为其自身对照的所有4只动物中均观察到该现象。研究表明，关节内压力是通过骨膜与骨表面之间的间隙传递的。其他解释，如静脉血压的测量，没有显示与关节静水压力变化的相关性。浮动骨骼的概念提出了这种新观察到的现象的生物力学原理：存在滑膜关节的骨膜下流体静力学连接，并且该“网”通过骨膜鞘在关节之间分配多余的压力，以维持关节接触表面的完整性。
Hydrostatic pressures can be transmitted between synovial capsules. In each of ten rabbits, we simultaneously measured pressure in two joints, one of which was passively ranged, and the other of which was kept stationary. The intra-articular pressure inside the stationary joint changed every time its companion joint was ranged. But the pressure in the stationary joint did not change when the periosteum was transected above the ranged joint. This phenomenon was observed in all four animals that served as their own controls. The study suggests that the intra-articular pressure was transmitted through the space between the periosteum and the bone surface. Alternative explanations, like measurements of venous blood pressure, did not show correlation with hydrostatic pressure changes in the joints. The Floating Skeleton concept suggests a biomechanical rationale for this newly observed phenomenon: that there exists a subperiosteal hydrostatic connection of synovial joints, and that this “net” distributes excess pressures among joints through the periosteal sheath to sustain the integrity of the joint contacting surfaces over a lifetime.