Lee K E, Pelker R R, Rudicel S A, Ogden J A, Panjabi M M
J Pediatr Orthop. 1985 Jan-Feb;5(1):32-9. doi: 10.1097/01241398-198501000-00007.
Growth plate fractures were produced in vitro in the rabbit capital femoral physis by applying shear loading parallel to the physeal complex in four different directions. Load-displacement curves were recorded and histologic sections were prepared from each specimen. Different histologic patterns were observed with different directions of shear loading. The histologic level within the growth plate through which the fracture propagated varied with each specimen and with the different directions of shear loading. The "classical" pattern of failure through the hypertropic cellular zone of the physis was not uniformly seen. The mechanical patterns of failure also varied with the direction of shear loading. The shear strength of the physeal complex was significantly greater with anterior to posterior loading than with posterior to anterior loading. The possible factors contributing to this mechanical anisotropy are discussed, and the literature on related studies is reviewed.
通过在四个不同方向上对兔股骨头骨骺施加平行于骨骺复合体的剪切载荷，在体外制造生长板骨折。记录载荷-位移曲线，并从每个标本制备组织学切片。不同方向的剪切载荷观察到不同的组织学模式。骨折传播所经过的生长板内的组织学水平因每个标本和不同的剪切载荷方向而异。并非总能观察到穿过骨骺肥大细胞区的“经典”破坏模式。破坏的力学模式也随剪切载荷方向而变化。从前向后加载时骨骺复合体的抗剪强度明显大于从后向前加载时。讨论了导致这种力学各向异性的可能因素，并综述了相关研究的文献。
