Heffron L E, Campbell J R
Vet Rec. 1978 Apr 1;102(13):280-3. doi: 10.1136/vr.102.13.280.
Morphologically the canine cranial cruciate ligament can be divided into a cranio-medial and caudo-lateral component which perform reciprocal functions at all angles of flexion of the stifle joint. Histologically the main constituents of these two components are bundles of longitudinally orientated collagen fibre. The results of the study of the effect of partial and total sectioning of the cranial cruciate ligament on the "anterior-draw" movement implied that the relatively minor degree of movement, elicited following sectioning of either of the components of the ligament, would not be detected under clinical conditions. For joint instability to be clinically detectable most of the ligament must have ruptured, or the intact portion must have undergone degenerative or disruptive changes.
从形态学上看，犬的颅交叉韧带可分为颅内侧和尾外侧部分，它们在膝关节的所有屈曲角度下发挥相互作用。从组织学上看，这两个部分的主要成分是纵向排列的胶原纤维束。对颅交叉韧带部分和完全切断对“前拉”运动影响的研究结果表明，在韧带任何一个部分切断后引发的相对较小程度的运动，在临床条件下是检测不到的。要使关节不稳定在临床上可被检测到，大部分韧带必须已经断裂，或者完整部分必须已经发生退行性或破坏性变化。
