Morphometric Study Of The Cervical Uncinate Process And Surrounding Structuresthe By Multilayer Spiral CT Scanning And The Technology Of Three-dimensional Reconstruction

ObjectiveUsing the multilayer Spiral CT scanning and the technology ofthree-dimensional reconstruction to assess the cervical processus uncinatusand the anatomy of nearby structural. Discussing the characteristic ofcervical processus uncinatus and the clinical significance of cervicalprocessus uncinatus.MethodsThirty-six normal adults and twenty-one patients who were suffer fromthe cervical spondylotic radiculopathy that the clinical manifestation weremainly about the C6nerve roots were studied. The authors investigated themorphometric relationships of the cervical processus uncinatus, vertebrae,foramen intervertebrale and transverse foramen by the multilayer Spiral CTscanning and the technology of three-dimensional reconstruction. Results1. About normal adults, the high of the cervical processus uncinatusfrom C3to C6is gradually increase, the average value is5.51mm±1.05mm，and the C7is lowest and the C6is highest. The width of thecervical processus uncinatus from C3to C7is hardly increase，the averagevalue is5.09mm±1.32mm. The length of the cervical processus uncinatusfrom C3to C7is approximate equal，the average value is11.12±1.72.Thedistance between the bilateral anterior angle of processus uncinatus fromC3to C7is gradually increase，the average value is18.24mm±2.75mm.The distance between the lateral margin of processus uncinatus from C3toC7is approximate equal，the average value is28.13mm±2.14mm. Thedistance between the bilateral posterior angle of processus uncinatus fromC3to C7is gradually decrease，the average value is10.06mm±3.11mm.2. About normal adults, the transverse diameter and longitudinaldiameter of transverse foramen from C3to C6are basic equal, but the leftone is general longer the right one about the transverse diameter. Theforamen intervertebrate from C3to C7is approximate equal.3. The length and width about the cervical processus uncinatusand andthe distance between the lateral margin of processus uncinatus from thepatients who were suffer from the cervical spondylotic radiculopathy are alllonger than the normal adults, moreover, the P value <0.05. And thedistance between the left and right transverse foramen in the patients groupalso longer than the normal one, the P value <0.05. 4. The width of the foramen intervertebrate about the patients group iswider than the normal group, P value<0.05. And the high of the foramenintervertebrate about the patients group is higher than the normal group, butP value>0.05.5.Compared with normal group and the non-operation group，althoughthe shortest distance of foramen intervertebrate and the area of foramenintervertebrate in the non-operation group are smaller than the normalgroup，but the P value>0.05.6. Compared with the operation group and the non-operation group，the shortest distance of foramen intervertebrate in operation group isshorter than the non-operation group，but the P value>0.05. The area offoramen intervertebrate operation group is smaller than the non-operationgroup，and the P value<0.05.Conclusion1. The multilayer Spiral CT scanning and the technology ofthree-dimensional reconstruction can widely use for observing the anatomyof the cervical vertebra and making preoperative politics of the cervicalanterior approach.2. The high, width and distance of the cervical processus uncinatushave some laws. The cervical processus uncinatus has close relations aboutthe transverse foramen and foramen intervertebrate.3. The hyperplasia of processus uncinatus is the key factor in foramen intervertebrate stenosis.4. The shortest distance of intervetabral foramen can be referenceindex about operation, but the area of intervetabral foramen can be oneindication for operation.