Roberts B J, Unsworth A, Mian N
Ann Rheum Dis. 1982 Jun;41(3):217-24. doi: 10.1136/ard.41.3.217.
Cadaveric hip joints were tested in a hip function simulator which subjected the femoral head to a cycle of loading and oscillation similar to that experienced during walking and measured the frictional torque transmitted to the acetabulum. Silicone fluids with viscosities from 10-2 Pa s (pascal second) to 30 Pa s were used as lubricants and the transition from mixed to full fluid film lubrication was observed around 5 x 10(-2) Pa s. Sodium carboxymethylcellulose solutions were also tested at the lower viscosities. Hyaluronidase digestion of samples of synovial fluid caused a significant increase in friction over the control samples. Trypsin digestion had no significant effect. No correlation between compliance of the cartilage and the frictional values was observed.
在髋关节功能模拟器中对尸体髋关节进行测试，该模拟器使股骨头承受类似于行走时所经历的加载和振荡循环，并测量传递至髋臼的摩擦扭矩。使用粘度范围从10⁻²帕斯卡秒（Pa s）至30 Pa s的硅油作为润滑剂，观察到在约5×10⁻² Pa s时从混合润滑转变为全液膜润滑。还在较低粘度下测试了羧甲基纤维素钠溶液。对滑液样本进行透明质酸酶消化导致摩擦力比对照样本显著增加。胰蛋白酶消化没有显著影响。未观察到软骨顺应性与摩擦值之间的相关性。
