Title |
Biomechanical comparison of three stand-alone lumbar cages — a three-dimensional finite element analysis
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Published in |
BMC Musculoskeletal Disorders, October 2013
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DOI | 10.1186/1471-2474-14-281 |
Pubmed ID | |
Authors |
Shih-Hao Chen, Ming-Chieh Chiang, Jin-Fu Lin, Shang-Chih Lin, Ching-Hua Hung |
Abstract |
For anterior lumbar interbody fusion (ALIF), stand-alone cages can be supplemented with vertebral plate, locking screws, or threaded cylinder to avoid the use of posterior fixation. Intuitively, the plate, screw, and cylinder aim to be embedded into the vertebral bodies to effectively immobilize the cage itself. The kinematic and mechanical effects of these integrated components on the lumbar construct have not been extensively studied. A nonlinearly lumbar finite-element model was developed and validated to investigate the biomechanical differences between three stand-alone (Latero, SynFix, and Stabilis) and SynCage-Open plus transpedicular fixation. All four cages were instrumented at the L3-4 level. |
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