THE BIOMECHANICAL ENDURANCE OF ANTERIOR AND POSTERIOR ALICI SPINAL SYSTEMS AGAINST COMPRESSION FORCES İN BURST FRACTURES
Journal Title: Journal of Turkish Spinal Surgery - Year 1991, Vol 3, Issue 1
Abstract
We carried out this experimentat study in order to compare and test the biomechanical strengths of Anteriar Spinal System and Posterior Alıcı Spinal System which we have been using in the treatment of burst fractures in our clinic since 1991. Biomechanical test were performed on 14 fresh thoracal 11 to lumbar 3 spines from calves and in the 13 of them burst fractures were formed. Six of them were stabilized by Anterior Alıcı Spinal System and 6 of them with Posterior Alıcı Spinal System. The thoracal 11 and lumbar 3 vertebrae and their inter vertebral discs of 14 vertebral columns were removed. Axial compression force which was 20 mm/minute ramp loading was applied to the experimental models in the Haunsfield universal materials testing device. The endurance of the intact verte-bra to the axial compression force was 11000 Nevvton, the fractured vertebra's 7200 Newton, Anterior Alıcı Spinal System's 11500 Nevvton, Posterior Alıcı Spinal System's 15200 Nevvton vvhile the fractured vertebra was deformed at 2800 Nevvton, this value in the intact and instrumented vertebrae vvere approximately 11000 Nevvton. Because the Anterior and Posterior Alıcı Spinal Systems have biomechanically nearly the same strength, in the treatment of burst fractures, especially those vvho need decompression, anterior approach vvith Anterior Alıcı Spinal System using decompression, correction and stabilization vvill be more beneficial to the patients vvho have burst fractures vvith significant retropulsion of bony fragments into the spinal canal.
Authors and Affiliations
A. AKBAŞ, T. UNSALDI, M. KUNT, R. İPEK
Keywords
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