The Analysis Of Imaging Three-dimensional Measurement And Influencing Factors On Centerpiece Titanium Plate Combined With Ipsilateral Screw Fixation Based On Cervical Three-dimensional Reconstruction Technology

Cervical lateral mass screw fixation is one of the most common cervical operations in spinal surgery.Since 1972,many literatures have reported the modification of this surgical method.These changes include the selection of nail entry point,the change of screw angle and the difference of nail exit point.Among these technologies,the one reported by Roy-Camille et al.and Jeanneret et et al.is the most widely used.Many other authors,including An et al.and Kim et al.,have suggested modifying these technologies.A common feature of all these techniques is to ensure the safety of nerve and blood vessel structures on the anterolateral side of cervical lateral mass.The improvement of these techniques makes cervical lateral mass screw fixation a safer surgical method.Posterior cervical single-door laminoplasty is a common operation in clinic at present,and it is the "gold standard" for treating Cervical Spondylotic Myelopathy(CSM).When patients with CSM have cervical curvature inversion,cervical fracture or cervical instability,they can be treated with posterior cervical lateral mass screw fixation combined with single-door spinal canal expansion decompression.In recent years,there are many literatures about the imaging measurement of nail track length of cervical block.However,it is rare to study the possibility of using Centerpiece titanium plate combined with lateral mass screw fixation in the same cervical lateral mass through the imaging measurement of the height and width of cervical lateral mass.Objective:The lateral mass of cervical spine was measured by three-dimensional reconstruction technology,and the height and width of the lateral mass of cervical spine were measured.The possibility of fixing the same lateral mass with Centerpiece titanium plate and lateral mass screws was discussed,and the space size of the lateral mass of cervical spine and its related influencing factors were studied,which provided theoretical basis for clinical related surgical schemes and reduced the occurrence of related complications.Methods:A total of 139 patients who underwent cervical surgery for cervical spondylosis in the Affiliated Hospital of Chengde Medical University from June 2016 to December 2019 were selected.The basic information of the patients,including age,gender,weight,height and diagnosis,was collected,and the preoperative cervical 3D CT data was uploaded to the image archiving and communication system.Among them,there were 57 females and 82 males,with an average height of(164.78±6.75)cm,an average age of 33-76 years,an average age of(57.01±10.26)years,and an average weight of(66.84±11.24)kg.The height and width of all the Cervical Lateral Mass(CLM)were measured,and the patients were grouped according to gender,age,height,weight and other factors for comparative analysis.Results:The average height and width of C3-C7 CLM of lower cervical spine were(14.58 1.20)mm and(14.58 1.20)mm,which were roughly the same as those of previous studies.The mean height and width of CLM in male group were(15.05±1.34)mm and(12.79±1.11)mm,respectively,while those in female group were(14.22±1.39)mm and(11.79±1.26)mm,respectively,with statistical difference(p<0.05)The mean height and width of CLM in high-weight group were(15.05±1.37)mm and(12.83±1.15)mm,respectively,while those in low-weight group were(14.45±1.36)mm and(11.98±1.21)mm,respectively,with statistical difference(p<0.05).The average height and width of CLM in the high height group were(15.15±1.38)mm and(12.89±1.10)mm,respectively,while those in the low height group were(14.23±1.35)mm and(11.76±1.25)mm,respectively,with statistical significance(p<0.05).There was no significant difference between C3 and C7 in different age groups(p>0.05).Conclusion:Through the imaging measurement of the lower cervical lateral mass of the large sample in this study and the statistical analysis and comparison,it can be concluded that gender,height and weight are the influencing factors of the size of the lower cervical lateral mass,while age may have no effect on the size of the lower cervical lateral mass,which can provide a theoretical basis for relevant clinical surgical plans.