biostudies-literatureGong WThe Natural Science Foundation of Fujian Province,ChinaFujian Provincial Health Technology Project56https://www.ebi.ac.uk/biostudies/studies/S-EPMC12822304biostudies-literatureUnknown26(1)<h4>Background</h4>Posterior decompression techniques represent the cornerstone of surgical intervention for lumbar disc herniation (LDH), evolving from open procedures to minimally invasive approaches. While effective, these techniques invariably require some degree of lamina resection to access the pathological site, potentially compromising spinal stability. The biomechanical impact of the extent of laminar height preservation remains quantitatively undefined.<h4>Objective</h4>This study employed three-dimensional finite element analysis (FEA) to quantitatively evaluate the influence of different lamina height preservation ratios during unilateral posterior decompression on the biomechanical stability of the L4/5 lumbar segment, aiming to provide a theoretical basis for optimizing surgiBMC surgeryImpact of lamina preservation height during posterior decompression on lumbar biomechanical stress distribution: a finite element study.PMC128223042021QNB013(Grant No. 2022J011497)Xue CHuang JHao XZhang LZhou FZheng WFei JZhang QGong WWang LfalseImpact of lamina preservation height during posterior decompression on lumbar biomechanical stress distribution: a finite element study.<h4>Background</h4>Posterior decompression techniques represent the cornerstone of surgical intervention for lumbar disc herniation (LDH), evolving from open procedures to minimally invasive approaches. While effective, these techniques invariably require some degree of lamina resection to access the pathological site, potentially compromising spinal stability. The biomechanical impact of the extent of laminar height preservation remains quantitatively undefined.<h4>Objective</h4>This study employed three-dimensional finite element analysis (FEA) to quantitatively evaluate the influence of different lamina height preservation ratios during unilateral posterior decompression on the biomechanical stability of the L4/5 lumbar segment, aiming to provide a theoretical basis for optimizing surgi2025-01-01T00:00:00Z2025 Dec2026-06-06T18:13:17.715Z2026-06-04T03:12:13.939ZS-EPMC128223044140862410.1186/s12893-025-03434-2