Affiliation:
1. School of Medical Sciences, Brazil
Abstract
OBJECTIVE: Perform radiographic analysis of the use of Transverse Traction Device (DTT) with respect to fusion rate in patients submitted to vertebral arthrodesis for degenerative lumbar diseases. METHODS: We selected x-ray images on anteroposterior, lateral and oblique views and with maximum flexion and extension dynamics of 23 patients submitted to posterolateral arthrodesis of the lumbar spine with a minimum follow-up period of six months. The images were evaluated and classified by the Linovitz's system by two spine surgeons. RESULTS: We evaluated the radiographs of 23 patients after the minimum postoperative period of 6 months and of these, 11 have used DTT. With regard to the consolidation rate, seven patients (63.6%) in the group of DTT were classified as fusion as well as six patients (50%) who were not submitted to the treatment. There was no statistical difference between the groups regarding the consolidation rate. CONCLUSION: The use of transverse traction device in this study showed no significant difference in the rate of consolidation in radiographic evaluation. Studies on the effective participation of this device in the stability of pedicle fixation systems are still lacking in the literature.
Subject
Clinical Neurology,Orthopedics and Sports Medicine,Surgery
Reference16 articles.
1. The use of pedicle-screw internal fixation for the operative treatment of spinal disorders;Gaines RW;J Bone Joint Surg Am,2000
2. A transverse loading system applied to a modified Harrington instrumentation;Armstrong GW;Clin Orthop Relat Res,1975
3. A new technic for segmental spinal osteosynthesis using the posterior approach;Cotrel Y;Rev Chir Orthop Reparatrice Appar Mot.,1984
4. Avaliação da angulação dos parafusos e utilização do estabilizador transversal na estabilidade do sistema de fixação pedicular;Defino HL;Rev Bras Ortop,1996
5. Mechanical stiffness of segmental versus nonsegmental pedicle screw constructs: the effect of cross-links;Hart R;Spine (Phila Pa 1976),2006