Ehler E, Dietz-Laursonn M, Gätke C, Christmann C
Anat Anz. 1977;142(3):237-42.
Four human hip joints which had been fixed informaldehyde taken from human corpses (average age at death: 72 years) were subjected to pressure along defined axes and tested for static strength and elasticity, the hip joint being regarded as a system. The stress-strain curve reveals no definite linearity. The deviations from Hooke's elasticity found in this way have been explained by the fact that not only completely elastic bone, but also plastic components (cartilage of the joint) were tested. The maximum breaking strain, the modulus of elasticity and the elasticity coefficient were also determined. Only about 50% of all fractures observed on the test set-up were diagnosticised radiologically. The parameters which have, in the past, been determined only on models have thus been replaced by experimental results obtained on actual hip joints.
取自人类尸体（平均死亡年龄：72岁）并经甲醛固定的四个人类髋关节，沿特定轴施加压力，并对其静态强度和弹性进行测试，髋关节被视为一个系统。应力-应变曲线未显示出明确的线性关系。以这种方式发现的与胡克弹性的偏差可以解释为，不仅测试了完全弹性的骨骼，还测试了塑性成分（关节软骨）。还测定了最大断裂应变、弹性模量和弹性系数。在测试装置上观察到的所有骨折中，只有约50%通过放射学诊断。过去仅在模型上确定的参数，因此被实际髋关节的实验结果所取代。
