Hasberry S, Pearcy M J
J Biomed Eng. 1986 Jan;8(1):62-6. doi: 10.1016/0141-5425(86)90032-4.
The dependence on temperature of the tensile properties of interspinous ligaments was examined to establish whether in vitro studies at room temperature reflect behaviour in vivo at higher temperatures. Specimens consisting of sheep interspinous ligaments attached to their adjacent spinous processes were mounted in specially designed holding devices in an Instron material testing machine; the specimens were immersed in saline and tests were conducted at four temperatures between 19 degrees C and 46 degrees C. Control tests demonstrated the repeated testing to a load up to half the fail load did not affect the response of the ligaments. No difference was found in the mechanical characteristics of the ligaments at the different temperatures but the ligaments expanded at the higher temperatures, resulting in an increase in extension over which they demonstrated an initial low stiffness characteristic. Thus although temperature did not directly affect the response of the ligaments to load, the thermal expansion of the soft tissue elements may have implications for the function and mobility of spinal joints if measured at room rather than body temperature.
研究了棘间韧带拉伸性能对温度的依赖性，以确定室温下的体外研究是否反映了更高温度下的体内行为。将由附着于相邻棘突的绵羊棘间韧带组成的标本安装在Instron材料试验机的特殊设计的固定装置中；将标本浸入盐水中，并在19摄氏度至46摄氏度之间的四个温度下进行测试。对照试验表明，重复测试至高达破坏载荷一半的载荷不会影响韧带的反应。在不同温度下，韧带的力学特性没有差异，但韧带在较高温度下会膨胀，导致其伸长增加，在此伸长范围内它们表现出初始低刚度特性。因此，尽管温度不会直接影响韧带对载荷的反应，但如果在室温而非体温下测量，软组织成分的热膨胀可能会对脊柱关节的功能和活动度产生影响。
