Viateau V, Preault H, Moissonnier P, Breard F, Degorce-Rubiales F, Kenesi C
Service de Chirurgie, Ecole vétérinaire d'Alfort, Maisons-Alfort.
Chirurgie. 1994;120(2):94-9.
The in vitro and static biomechanical behaviour of vertebrae with spondylosis were compared with that of healthy vertebrae. In the dog, spondylosis predominates in the lombo-sacral spine which was chosen as an animal model for spontaneous spondylosis. Fourteen surgical specimens were take from German shepherd dogs which had been submitted to right and left lateral flexion, saggital flexion and dorsal flexion. Angular displacements were recorded with an analyser of spinal movement. Our results demonstrated diseased vertebrae have more flexibility than healthy vertebrae in the sagittal and frontal planes than but less so for dorsal flexion. In Addition, diseased vertebrae tend to move upward during lateral flexion. Exeresis of ligament and capsular structures has allowed us to demonstrate the importance of these structures in maintaining spine stability in the sagittal plane and in joint coaptation. Exeresis of the facet joints led to the demonstration of the role of these structures in the maintenance of spine stability in the transverse plane in cases of disc degeneration.
将患有脊柱病的椎骨的体外静态生物力学行为与健康椎骨的进行了比较。在犬类中，脊柱病在腰骶椎最为常见，因此选择腰骶椎作为自发性脊柱病的动物模型。从德国牧羊犬身上获取了14个手术标本，对其进行左右侧屈、矢状面屈曲和背屈操作。使用脊柱运动分析仪记录角位移。我们的结果表明，患病椎骨在矢状面和额状面比健康椎骨更具灵活性，但在背屈方面则不然。此外，患病椎骨在侧屈时往往向上移动。韧带和关节囊结构的切除使我们能够证明这些结构在维持脊柱矢状面稳定性和关节贴合方面的重要性。小关节的切除表明了在椎间盘退变情况下这些结构在维持脊柱横断面稳定性中的作用。
