The Clinical Research Of The Best Puneture Angles In Thoracolumbar Percutaneous Vertebroplasty

Objective:By measuring the thoracolumbar osteoporotic vertebralcompression fracture in patients with image data, Observing the clinical practice, to explore the clinical research of puneturing the best angles in thoracolumbar percutaneous vertebroplasty.Methods:We chose the records of 26 patients who were treated with thoracolumbar precut-aneous vertebroplasty in departments of the orthopaedics of Shandong University of Traditional Chinese Medicine Affiliated Hospital from November,2008 to December,2009. Collected the CT images(T11-L2) and selected the most generous level of each vertebra,s which we got 104 pieces of CT images. Use the related softwares, measuring the largest and the smallest puncture degree of angle, to obtain the best individual vertebral puncture degree of angle, Analyze the statistical difference among the each best vertebra puncture angle and the optimal puncture angle whether there is a link between the corresponding vertebral body.Results:1. The best vertebral puncture degree of angle on the right from the T11 to the L2 was gradually increased. However, L1 and L2 have little difference.2. When we did the operation, the each best vertebra puncture angle on the right had the statistically significant differences.3.There was a linear relationgship between the best vertebra puncture angle on the right and vertebrae ordinal,sagittal diameter of vertebral body,the distance on the right from the medial pedicle cut-off point to the lateral point of intersection between the pedicle and the vertebral body, among which the Vertebrae ordinal make a most significant impact,followed by the sagittal diameter of vertebral body,and the the distance on the right from the medial pedicle cut-off point to the lateral point of intersection between the pedicle and the vertebral body make a leatest impact.There was a positive correlation between the best puneture angles on the right and vertebrae ordinal, the distance on the right from the medial pedicle cut-off point tothe Lateral point of intersection between the pedicle and the vertebral body.Also there was a negative correlation between the best puneture angles on the right and sagittal diameter of vertebral body.Conclusion:1. To the thoracolumbar vertebraes (T11-L2), Puncturing can reach asatisfied position in the vertebra body.2. The best vertebra puncture angl had a statistically significant differences in each thoracolumbar vertebrae (T11-L2), on the whole the best angle of the Puncture needle is 30°-35°to the sagittal Plane.3. According to the best puncture angle equation derived from the measured data of vertebral bodies,the puncture process must be more secure, accurate, rapid.