The effect of the volume of effusion, joint position and continuous passive motion on intraarticular pressure in the rabbit knee.
The effect of the volume of effusion, joint position and continuous passive motion on intraarticular pressure in the rabbit knee.
复制标题
兔膝关节积液量、关节位置和持续被动运动对关节内压的影响。
作者：
S. O’Driscoll;A. Kumar;R. Salter
在20只家兔的40个膝关节上，研究了关节体位和持续被动运动（CPM）对关节内压力和关节顺应性的影响。在膝关节内注射0.5ml生理盐水，记录膝关节屈曲40 ° ~ 160 °和CPM期间的关节内压力。膝关节屈曲度的增加会产生显著更高的关节内压力。在CPM期间观察到压力的正弦振荡。模拟关节积血相关压力所需的最佳积液量为2 ml。在平均注射4 ml生理盐水发生滑膜破裂之前，可以证明关节囊的粘弹性拉伸。
The effect of joint position and continuous passive motion (CPM) on intraarticular pressure and joint compliance was studied in 40 knee joints of 20 rabbits. Increments of 0.5 ml normal saline were injected into the knee joint and the intraarticular pressures were recorded with the knees flexed from 40 degrees to 160 degrees and during CPM. Increasing degrees of flexion of the knee produced significantly higher intraarticular pressures. A sinusoidal oscillation in pressure was observed during CPM. The optimum volume of effusion required to simulate the pressures associated with a hemarthrosis was found to be 2 ml. Viscoelastic stretching of the capsule could be demonstrated prior to synovial rupture which occurred with a mean of 4 ml of injected saline.