Anatomical Study Of Longus Colli And Vertebralartery In Cervical Vertebra MRI

Objective:up to now,most studies have measured the data of cervical longus colli,vertebral artery and their related structures from gross specimens,but only one literature has measured the data of longus colli and uncinate process from the MRI of healthy people,but the data it measured is single,and there is no comparison between patients with cervical spondylosis and patients without cervical spondylosis.The purpose of this study is to explore the relationship between the parameters of cervical longus colli and vertebral artery in cervical vertebra MRI during cervical surgery,and to compare whether there are differences between patients with cervical spondylosis and patients without cervical spondylosis,and to explore their guiding significance for improving the safety of anterior cervical surgery.Materials and methods: the MRI data of 80 orthopedic inpatients in the first affiliated Hospital of Chongqing Medical University were collected,including patients with cervical spondylosis and patients without cervical spondylosis.The admission time was from January 2018 to December 2018.There were 32 males and 48 females.They were divided into 4 groups according to their age.The measured parameters included the distance between longus colli,bilateral longus colli distance,the distance between vertebral artery,bilateral vertebral artery distance and bilateral longus colli height at each level of intervertebral disc from C2/3 to C6/7.Results: the distance between bilateral longus colli increased gradually from C2/3 to C6/7,and the height of bilateral longus colli decreased from C3/4 to C6/7.There was no significant difference in the distance of bilateral vertebral arteries at all levels,but the distance between vertebral arteries increased gradually from C3/4 to C6/7.The height of the longus colli in men is larger than that in women.The distance and height of bilateral longus colli in patients with cervical spondylosis were larger than those in patients without cervical spondylosis,but there was no significant difference in the distance between longus colli between patients with cervical spondylosis and patients without cervical spondylosis.Among different age groups,the distance between longus colli increased with age,but there was no significant difference in vertebral artery distance.Conclusion: the longus colli distance,the distance between longus colli and the longus colli height in patients with cervical spondylosis were larger than those in patients without cervical spondylosis.The safe distance of pulling the longus colli was 6mm on the left side and 6.5mm on the right side in C2/3,C3/4 and C4/5 level;6.5mm on the left side and 7mm on the right side in C5/6 level;7mm on the left side and 8.5mm on the right in C6/7 level.Because the distance of the right longus muscle is larger(P <0.05),it is recommended to choose the right side for operation.