Abstract:Objective To study the division of the travel nerve root in the inferior vertebral incisure in order to guide the implementation of the spinal endoscopic technique via the intervertebral foramen.Methods Three groups (A,B,C) were divided by the age:25~35 years old,45~55 years old,and 65~75 years old.Each group were randomly selected 40 people,with a total of 120 people and the ratio of male and female 1︰1.Describe the spatial geometric relationships between L3~4,L4~5,L5S1 intervertebral foramen structures and nerve roots by observing the lumbar lateral position X-ray,lumbar MRI and other conventional preoperative imaging data.Measure the height and width of the Inferior vertebral incisure and analyze the testing data in SPSS 19.0 by using one-way analysis of variance. Results A total of 720 intervertebral foramen were observed,with 240 in each group.Nerve roots within the Intervertebral foramen direction in the Inferior vertebral incisure.The mean value of the width of the measured inferior vertebral incisure is:Group A (1.514 6±0.013 8)mm;Group B (1.493 3±0.019 0)mm;Group C (1.487 5±0.018 4)mm.The mean value of the height is:Group A (1.016 7±0.028 7)mm;Group B (0.884 2±0.014 05)mm;Group C (0.993 8±0.015 05)mm.The oneway ANOVA results showed:there was no significant difference between the measured values of the inferior vertebral incisure width in each group (P=0.071),while the differences of the (measured values of the inferior vertebral incisure) height in each group was statistically significant(P=0.000).Conclusion Preoperative imaging analysis of nerve root in vertebral incised trace of course place,can offer the reference for the Transformational spinal endoscopy technique to avoid damage nerve root imaging.
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