Biomechanical evaluation of sacroiliac joint fixation with decortication

The Spine Journal : Official Journal of the North American Spine Society
Yushane C ShihJonathan N Sembrano

Abstract

Fusion typically consists of joint preparation, grafting, and rigid fixation. Fusion has been successfully used to treat symptomatic disruptions of the sacroiliac joint (SIJ) and degenerative sacroiliitis using purpose-specific, threaded implants. The biomechanical performance of these systems is important but has not been studied. The objective of this study was to compare two techniques for placing primary (12.5 mm) and secondary (8.5 mm) implants across the SIJ. This is a human cadaveric biomechanical study of SIJ fixation. Pure-moment testing was performed on 14 human SIJs in flexion-extension (FE), lateral bending (LB), and axial rotation (AR) with motion measured across the SIJ. Specimens were tested intact, after destabilization (cutting the pubic symphysis), after decortication and implantation of a primary 12.5-mm implant at S1 plus an 8.5-mm secondary implant at either S1 (S1-S1, n=8) or S2 (S1-S2, n=8), after cyclic loading, and after removal of the secondary implant. Ranges of motion (ROMs) were calculated for each test. Bone density was assessed on computed tomography and correlated with age and ROM. This study was funded by Zyga Technology but was run at an independent biomechanics laboratory. The mean±standard de...Continue Reading

Citations

Dec 31, 2020·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·Kaihua ZhouHuilin Yang
Dec 24, 2019·Medical Engineering & Physics·Gloria CasaroliFabio Galbusera
Feb 24, 2021·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Roxanne Dubé-CyrCarl-Éric Aubin
Mar 24, 2021·Spine Deformity·Roxanne Dubé-CyrPierre-Jean Arnoux
May 4, 2021·Clinical Biomechanics·Maxwell C CardwellGregory J Schmeling
May 24, 2021·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Amin JoukarVijay K Goel

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