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Biomechanical analysis of a newly proposed surgical combination (MIS screw-rod system for indirect decompression+ interspinous fusion system for long term spinal stability) in treatment of lumbar degenerative diseases – Lumbar Spinal Stenosis

The article analyzes the biomechanical stability of a newly proposed surgical combination for the treatment of lumbar degenerative diseases. The study used a three-dimensional CT image of an adult healthy male volunteer to establish different surgical models and compared their biomechanical stability using finite element analysis. The results showed that the newly proposed surgical combination, which includes minimally invasive surgery of a screw-rod system for indirect decompression and an interspinous fusion system for long-term spinal stability, had comparable biomechanical stability to other surgical combinations. Additionally, the study suggested that facet joint fusion might not be necessary to increase the stability of the surgical procedure

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
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Published article

CONCLUSION: The biomechanical stability of the newly proposed surgical combination (MIS screw-rod for indirect decompression + interspinous fusion for long term spinal stability technique) was not lower than that of the other surgical combination groups, and it might not be necessary to perform facet joint fusion during the surgery.

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World Neurosurg. 2024 Feb 14:S1878-8750(24)00258-4. doi: 10.1016/j.wneu.2024.02.061. Online ahead of print.ABSTRACTOBJECTIVE: The aim of this study is to analyze the biomechanical stability of a newly proposed surgical combination (minimally invasive surgery of screw-rod system for indirect decompression+ interspinous fusion system for long term spinal stability) in treatment of lumbar degenerative diseases MATERIALS AND METHODS: The,

World Neurosurg. 2024 Feb 14:S1878-8750(24)00258-4. doi: 10.1016/j.wneu.2024.02.061. Online ahead of print.

ABSTRACT

OBJECTIVE: The aim of this study is to analyze the biomechanical stability of a newly proposed surgical combination (minimally invasive surgery of screw-rod system for indirect decompression+ interspinous fusion system for long term spinal stability) in treatment of lumbar degenerative diseases MATERIALS AND METHODS: The three-dimensional CT image data of an adult healthy male volunteer was selected. An intact model of L4/5 was further established and validated by using Mimic and 3-matic, 3D slicer, abaqus, Python. Four surgical models were constructed. The biomechanical stability among these surgical modes was compared and analyzed using finite element analysis.

RESULTS: The maximum von mises on fixation system in surgical models 2 and 3 exhibited comparable values. This finding suggested that the increase in interspinous fusion did not result in a significant elevation in maximum von mises on fixation system. Compared with the third surgical model, the fourth model, which received less average von mises experienced by the screw in contact with both cancellous and cortical bone. The findings indicated that the inclusion of facet joint fusion in surgical procedures might not be necessary to increase the average von Mises stress experienced by the screw in contact with both cancellous and cortical bone.

CONCLUSION: The biomechanical stability of the newly proposed surgical combination (MIS screw-rod for indirect decompression + interspinous fusion for long term spinal stability technique) was not lower than that of the other surgical combination groups, and it might not be necessary to perform facet joint fusion during the surgery.

PMID:38364897 | DOI:10.1016/j.wneu.2024.02.061

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Biomechanical analysis of a newly proposed surgical combination (MIS screw-rod system for indirect decompression+ interspinous fusion system for long term spinal stability) in treatment of lumbar degenerative diseases

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World Neurosurg. 2024 Feb 14:S1878-8750(24)00258-4. doi: 10.1016/j.wneu.2024.02.061. Online ahead of print.ABSTRACTOBJECTIVE: The aim of this study is to analyze the biomechanical stability of a newly proposed surgical combination (minimally invasive surgery of screw-rod system for indirect decompression+ interspinous fusion system for long term spinal stability) in treatment of lumbar degenerative diseases MATERIALS AND METHODS: The

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