周 蔚(Zhou Wei，Dept Orthop，6th Peop Hosp Shanghai，Shanghai Jiaotong Univ，Shanghai 200233)…∥Chin J Orthop Trauma.－2011，13(2).－101～105

Navigation-guided posterior fixation plus transpedicular vertebroplasty for thoracolumbar frac-tures

周 蔚(Zhou Wei，Dept Orthop，6th Peop Hosp Shanghai，Shanghai Jiaotong Univ，Shanghai 200233)…∥Chin J Orthop Trauma.－2011，13(2).－101～105

ObjectiveTo assess the outcomes of navigationguided posterior fixation plus transpedicular vertebroplasty for thoracolumbar fractures.MethodsFrom June，2005 through March，2009，30 patients with thoracolumbar fracture underwent navigation-guided posterior fixation with transpedicular vertebroplasty in our department.They were 18 men and 12 women，aged from 21 to 57 years(mean，35.5 years).Three fractures occurred on T11，11 on T12，14 on L1，and 2 on L2.ResultsThe follow-ups averaged 18 months(12 to 36 months).Of the 129 pedicle screws inserted，110 were of degree 0，8 of degreeⅠ，2 of degreeⅡ，0 of degreeⅢ.The total good to excellent rate was 98.3%for the screw insertion.Before operation，the average canal compromise was 37.5%(5%to 70%)，the average vertebrae compression was 54.5%(40%to 70%)，and the average Cobb angle was 29.5°(15.5°to 41.5°).Postoperatively the average canal compromise was 14.3%(0 to 20%)，the average height of vertebrae was 91.3%(80%to 100%)and the average Cobb angle was 4.9°(1.3°to 9.1°).The long-term follow-ups showed an average Cobb angle loss of＜1°and an average vertebral height loss of ＜2 mm.ConclusionThe navigation-guided posterior fixation plus transpedicular vertebroplasty is an effective treatment for thoracolumbar fractures.Computer-assisted navigation system enhances accuracy and further improves the safety of spine surgery，compared with just the anterior or posterior fixation.10 refs，1 fig，1 tab.

(Authors)