Does stabilization of the degenerative lumbar backbone itself produce multifidus atrophy?
Med Eng Phys. 2017 Nov;49:63-70
Authors: Kim YE, Choi HW
The impact of stabilization of the degenerative section on modifications within the sample of paraspinal muscle exercise was investigated utilizing a beforehand developed musculoskeletal mannequin. Muscle exercise change relying on L4-L5 section stabilization with and with out taking into consideration the presence of multifidus atrophy based on direct invasion of the again muscle throughout surgical procedure (MADIBM) was analysed in erect standing and 20° flexed postures. For the stabilization of the degenerative section, a fusion or non-fusion stabilization with a pedicle-based dynamic stabilization system (PBDS) was utilized. Throughout erect standing, fusion generated a 12% discount within the whole multifidus muscle power, whereas its discount was 6.6% with PBDS utility. The presence of MADIBM produced 23.zero% and 22.5% reductions in fusion and with PBDS utility, respectively. Throughout 20° flexion, 10.5% and 9.three% reductions have been produced for fusion and PBDS utility, respectively, and the corresponding values have been 23.four% and 23.zero%, respectively, within the presence of MADIBM. Elevated side joint contact forces have been produced on the non-stabilized ranges after stabilization whereas in erect standing posture. Alterations in muscle exercise, which may very well be considered adaptions to altered spinal stability, might generate sudden secondary issues within the backbone.
PMID: 28774686 [PubMed – indexed for MEDLINE]