1) Fractures of unilateral or bilateral lamina of vertebral arch.

2) BACKGROUND: The incidence rate of spondylolysis of lumbar vertebral arch in recruits is higher during the training, and it affects the normal training.

3) The incidence rate of spondylolysis of vertebral arch before and after training: Before training, 5 cases had spondylolysis of L5 vertebral arch, and the incidence rate was 5%.

4) Applying vertebral arch root screw to reduce dislocated vertebral body has important significance to this operation.

5) The length of pedicle of vertebral arch showed a gradula increase downwards.

6) Objective To explore clinical features of vertebral arch tuberculosis, and to discuss the diagnosis and treatment of this illness.

7) CONCLUSION: The incidence rate of spondylolysis of vertebral arch is associated with the training intensity.

8) Results: Normal people displayed significant asymmetry in length of vertebral arch, with the left pedicle and lamina length being significantly greater.

9) Methods: 50 cases of adult normal isthmian part of lumbar vertebral arch were scanned via CT. The screw of porous side entry route and angle were observed.

10) Objective To observe the projection of pedicle of lumbar vertebral arch on the vertebral body and research the regular pattern of its central point.

11) Periodical bending resistance test in screws with hollow lateral holes in pedicle of vertebral arch was made on the rest 12 vertebrae.

12) On the basis of imaging characteristics the fracture of lamina of vertebral arch was divided into 5 types:vertical, transversal, "7"-graphemic or reverse"7"-graphemic , "S" and displaced.

13) Objective To utilize SOCON nail and hook system for pedicle of vertebral arch in the treatment of lumbar vertebrae isthmus spondyloschisis in teenager, and observe the fixation and fusion effect.

14) Result Obtaining the data of the radius of arterial groove vertebral arch, the tuberculum posterius and anterior altantis .

15) Conclusion: Sagittal reconstruction can completely display the isthmus of vertebral arch and the features of spondylolysis in detail.

16) Objective: To investigate the distance between two screw entrance points of pedicle of thoracolumbar vertebral arch and the best relative TSA and determine the exact data for the surgical procedure.

17) The therapeutic effect of nerve decompression and vertebral canal plasty combined with the screw-rod system fixation of posterior pedicle of vertebral arch and the fusion of bone graft is fine.

18) Methods 18 cases of thoracolumbar fractures and spondylolisthesis were treated with SF internal fixations . The entrance point was determined according to the vertebral arch position in X-ray.

19) We suggest that posterior vertebrectomy through the pedicle of vertebral arch is the most safely way.

20) OBJECTIVE: To analyze the correlation of the incidence rate of spondylolysis of lumbar vertebral arch with training and the original lesions at waist in recruits.

21) Methods 106 patients of lumbar disc hernia were treated by opening through the back entry or removing half or whole lamina of vertebral arch. The surgical curative effect has been evaluated.

22) Conclusion The application of SOCON nail and hook system for pedicle of vertebral arch in the treatment of teenagers lumbar vertebrae isthmus spondyloschisis is a good meth od.