颈椎间盘部分切除对钩椎关节轴向应力影响的实验研究

钩椎关节是正常成人颈椎３－７所特有的滑膜关节，正常情况下起着稳定颈椎的作用［１］。本研究通过测试颈椎功能单位在轴向载荷下．在椎间盘部分切除术前后，钩椎关节所承受的压应力变化，进行其生物力学方面的研究，旨在探讨钩椎关节的生理及病理情况下的临床意义。

EFFECT OF PARTIAL CERVICAL DISCECTOMY ON AXIAL STRESS OF THE LUSCHKAJOINTS

The stress change was tested of Luschka joints under axial load after partial cervical discectomy in fresh male cadavers with 12 functional spinal units. We putted the pressure sensitive film of excessive low-pressure into Luschka joints to test the change under the axial load of 39.2N,49N and 58.8N orderly. The data wae calculated by EPD 301 concentration meter and EPD-302.pressure-scale lneter.The results showed that cervical discs beared the load of axial pressure physically,but Luschka joints did it little;Compressive stress in Luschka joints increased statistically because of narrow intervertabra causing new stress distributuion after panial discectomy(P<0.01).The result suggest physical function of the discs be important, It is an important subject how to reconstruct discs function, matain cervical intervertebra height and cervical spinal stability.