Abstract:

Objective　To provide imaging anatomic data of lumbar spinal nerve posterior rami for diagnosing and treating lumber and back pain and confirming the local anesthesia points.　Methods　30 adult volunteers were taken as the subjects. Multi-slice spiral CT scans (T12-S1) was performed, and then the data were analyzed and 3D reconstructed by Mimics software.　Results　The left and right distances of transverse root point from L1 to L5 were (20.86±6.00)mm，(21.19±4.71)mm，(22.86±4.53)mm，(24.56±5.10)mm and (26.68±5.98)mm, as well the depth of transverse root point from L1 to L5 were (27.55±4.42)mm，(29.02±5.39)mm，(32.64±5.03)mm，(33.92±4.74)mm，and (35.65±4.89)mm respectively, and the height of transverse root points were (8.12±5.84)mm，(8.22±4.87)mm，(8.61±4.60)mm，(8.40±6.13)mm and (8.49±4.67)mm respectively. There was significant difference of the length, thickness and height of L1~L5 transverse processus between the gender and the bilateral sides.　Conclusions　Anatomic features and diversities of lumber vertebra and adjacent structures can be presented by three-dimensional reconstruction skill, which is valuable for the diagnosis and treatment of the lumbodorsal diseases.

Key words: Syndrome of lumbar spinal nerve posterior rami, Lumbar spine, spinous process, Transverse processus, Three-dimensional reconstruction