EXPERIMENTAL STUDYOF ANTERIOR CORRECTION AND FIXATION TECHNIQUES FOR SPINAL DEFORMITIES
https://doi.org/10.14531/ss2011.3.82-88
Abstract
Objective. To assess spinal mobility with different extents of intervertebral disc resection, strength of screw fixation in vertebral bodies depending on placement techniques, and potentials for augmentation of screw fixation with bone cement.
Material and Methods. Eighteen young human cadaveric models of thoracolumbar spines were used. Discs with different extents of discectomy were exposed to rapture and torsion load. Mechanical stability of screw fixation using different placement techniques and augmentation with bone cement was assessed.
Results. The highest spinal mobility was observed after total discectomy with posterior longitudinal ligament dissection. Two-rod fixation system proved to be the most stable one, and bicortical screw placement – the most preferable. Bone cement augmentation increases mechanical stability of screws inserted into vertebral bodies.
About the Authors
Sergey Vasilyevich Kolesov
Central Institute of Traumatology and Orthopaedics n.a. NN Priorov, Moscow
Russian Federation
Russian Federation
Nikolay Sveridovich Gavryushenko
Central Institute of Traumatology and Orthopaedics n.a. NN Priorov, Moscow
Russian Federation
Russian Federation
Stepan Anatolyevich Kudryakov
Scientific and Practical Centre for Medical Care to Children with Craniofacial Abnormalities and Congenital Nervous System Disorders, Moscow
Russian Federation
Russian Federation
Ilya Aleksandrovich Shavyrin
Scientific and Practical Centre for Medical Care to Children with Craniofacial Abnormalities and Congenital Nervous System Disorders, Moscow
Russian Federation
Russian Federation
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Review
For citations:
Kolesov S.V., Gavryushenko N.S., Kudryakov S.A., Shavyrin I.A. EXPERIMENTAL STUDYOF ANTERIOR CORRECTION AND FIXATION TECHNIQUES FOR SPINAL DEFORMITIES. Russian Journal of Spine Surgery (Khirurgiya Pozvonochnika). 2011;(3):082-088. (In Russ.) https://doi.org/10.14531/ss2011.3.82-88
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