摘要
[目的]探讨Luschka关节(钩椎关节)对下颈椎稳定性的影响。[方法]从16具新鲜尸体取C3、4、C5、6共32个脊柱功能单位(FSU)标本,分成切除与不切除Luschka关节2组。标本置于AG-10TA自动控制电子万能试验机上模拟生理条件下颈椎伸、屈运动。计算机采集数据,并计算出FSU上锥体矢状面相对于下锥体的水平位移、旋转角度和冠状面侧方位移及与FSU伸、屈角度对应的水平位移、旋转角度和冠状面侧方位移。[结果]Luschka关节切除组与对照组上椎体矢状面相对下椎体水平位移、旋转角度和冠状面侧方位移有显著差异(P<0.01)。Lushcka关节切除组FSU伸、屈角度与水平位移、旋转角度和冠状面侧方位移呈正不完全相关;对照组除水平位移呈正不完全相关,余皆呈0相关。[结论]Luschka关节是维持下颈椎稳定的重要结构,对限制椎体向侧方移位作用极显著,在下颈椎生理范围伸、屈活动时起限制椎体向侧方移位和过度旋转的作用。
[ Objective] To study the stability function of Luschka Joint （LJ） of lower cervical spine. [ Method] C3,4 and C5,6 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 C3,4 and Cs,6was 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 〈 0. 01 ）. In experimental group, there was incomplete correlation between the degree of angulation （flexion and extension） and SHD, RA, CLD of FSU. In control group, there was incomplete correlation between the degree of angulation of flexion and extention and SHD and zero correlation between the degree of angulation and RA, CLD of FSU. [ Conclusion] Luschka joint plays important role in maintaining the stability and remarkablely restricting the lateral displacement and excessive rotation of lower cervical spine.
出处
《中国矫形外科杂志》
CAS
CSCD
北大核心
2006年第23期1804-1806,共3页
Orthopedic Journal of China
基金
黑龙江省攻关项目青年基金(No.Q94C-24)
