Biomechanical study of the stability function of lower cervical spinal Luschka joint / 中国矫形外科杂志

ABSTRACT

[Objective]To study the stability function of Luschka Joint(LJ) of lower cervical spine.[Method]C_(3、4) and C_(5、6) as a funtional spinal unit(FSU) were taken from 16 fresh adult cadavers and randomly divided into experimental group,its LJ was cut out and in control group,LJ was maintained.The FSU of C_(3、4) and C_(5、6)was loaded and tested on the AG-10 AT automatic electronic versatile machine in normal,flexion ≤10? and extension ≤7.5? positions.Data of sigattal horizontal displacement(SHD),rotational angulation(RA) and coronary laterral displacement(CLD) were collected,counted and 3-dimesionally analyzed by computer.[Result]The SHD,RA and CLD of FSU experimental group were significantly different with that of control group(P