Effect of body mass index and disc degeneration on lumbar biomechanics after unilateral biportal endoscopy-unilateral laminectomy bilateral decompression for lumbar spinal stenosis: a finite element study.

Front Bioeng Biotechnol · 2026 · PMC13365126 · PMID 42453139

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UBE-ULBD model under different BMI and disc degeneration conditions Single-factor effects Within the same degeneration grade, an increase in BMI generally promoted an increasing trend in ROM, IDP, and FJS at the L4–L5 segment, suggesting that higher body weight amplifies segmental motion and loading on the anterior and posterior columns.

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