Application of 3D Printing Technology in Degenerative Scoliosis Orthopedics
1.The Fourth Clinical Medical College of Guangzhou University of Traditional Chinese Medicine
2 3rd Department of Orthopedics,Shenzhen Hospital of Traditional Chinese Medicine
Abstract:Objective To investigate the feasibility of preoperative 3D printing in correction of degenerative scoliosis deformity.Methods From October 2014 to November 2015,30 patients were admitted to our hospital and were diagnosed as degenerative scoliosis deformity.These were 10 males and 20 females.The mean age was(55.2±6.8)(range 45~65).They were treated by 3D printing technology combined with selective pedicle screw fixation.All patients were followed up for 12 months.The VAS score,JOA score,ODI(functional index),SF-36 health questionnaire score were used to evaluate the clinical efficacy.Imaging Cobb angle and apical vertebral offset imaging were evaluated.And we recorded and calculated the nail-setting time.CT was used for assessment of nail placement accuracy and record the relevant complications.Results VAS score,JOA score,ODI index and SF-36 health questionnaire score were significantly different between those before operation and after operation(P<0.05).There were significant differences in Cobb angle and apical vertebral offset distance between those before operation and 1,6 and 12 months after operation(P<0.05).Comparation between VAS score,JOA score,ODI index,SF-36,Cobb angle and apical vertebra offset distance at 1,6 and 12 months after operation showed no significant difference(P>0.05).The time of nail-setting was(2.0±0.2) min and the accuracy was 95.2%(339/356).Conclusion 3D printing technology combined with selective pedicle screw technique in the treatment of degenerative scoliosis deformity is safe,efficient and accurate.