腰椎峡部裂线缆修复术的应用解剖

目的:为腰椎峡部裂线缆修复术提供所需的应用解剖学数据。方法:在成年人尸体标本上测量脊神经前支与L_4、L_5横突上、下缘和前面起始部,内1/4点处,内1/2点处间的距离,以及脊神经前支在横突上下缘投影长度占整个横突长度的比例。结果:脊神经前支与L_4、L_5横突前面的距离在起始部接近0 mm,在内1/4点处L_4约为4 mm,L_5约为1 mm,脊神经前支与L_4、L_5横突上、下缘的距离稍大。结论:由于脊神经几乎紧贴L_4、L_5横突起始部前面,在行峡部裂线缆修复术时,应特别避免在该处损伤脊神经前支。

Anatomical determination for isthmus reconstruction in lumbar spondylolysis with wire fixation

Objective:To provide anatomical data for isthmus reconstruction in lumbar spondylolysisora.Methods:The distances between the anterior branches of spinal nerves and different parts of L_4,L_5 transverse processes,as well as the projection length of spinal nerves on transverse processes were measured on adult human eorp with wire fixation. Results:The anterior branches of spinal nerves were quite close to the anterior surfaces of L_4,L_5 transverse processes, especially at their starting points.And the distance was even closer at L_5 level than at L_4 level at the same point.The distances were a bit longer between the anterior branches of spinal nerves and superior as well as inferior borders of L_4, L_5 transverse processes.Conclusion:Because of the close relationship in spatial distribution between the anterior bran- ches of spinal nerves and the starting points of the anterior surfaces of L_4 ,L_5 transverse processes,special care should be taken when the wire is fixed at these sites in the reparative surgery for spondylolysis to avoid any possible neural injury.