Khalsa P S, Grigg P
University of Massachusetts Medical School, Worcester, 01655, USA.
J Orthop Res. 1996 Jan;14(1):114-22. doi: 10.1002/jor.1100140119.
It is known that afferent neurons play a protective role in knees made unstable by transection of the anterior cruciate ligament. However, it is not known whether cutting the anterior cruciate ligament has an effect on the response of the sensory neurons that innervate the joint. In this study, the responsiveness (activation threshold and position sensitivity) of single, mechanically sensitive afferent neurons from the cat knee was evaluated by a series of extension, internal, and external rotations. The anterior cruciate ligament then was cut and the same procedure was repeated. Transection of the ligament increased joint laxity for all types of rotation. The responsiveness of the neurons was not changed significantly by cutting the ligament (p > 0.05). Therefore, capsule afferents continue to behave normally in joints in which the anterior cruciate ligament has been transected.
已知传入神经元在因前交叉韧带横断而变得不稳定的膝关节中起保护作用。然而，尚不清楚切断前交叉韧带是否会对支配该关节的感觉神经元的反应产生影响。在本研究中，通过一系列伸展、内旋和外旋评估了来自猫膝关节的单个机械敏感传入神经元的反应性（激活阈值和位置敏感性）。然后切断前交叉韧带并重复相同的程序。韧带横断增加了所有类型旋转时的关节松弛度。切断韧带后神经元的反应性没有显著变化（p>0.05）。因此，在已横断前交叉韧带的关节中，关节囊传入神经继续正常发挥作用。
