ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026
Biomechanical comparison of laminoplasty and in-site regrafting versus laminectomy with pedicle screw fixation for localized thoracic pathological ossification of the ligamentum flavum: a finite element analysis.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
Abstract
objectiveLocalized thoracic pathological ossification of the ligamentum flavum (TPOLF) is considered a significant factor in thoracic myelopathy, and surgery is the main treatment method. This study aimed to compare the biomechanical effects of two internal fixation techniques on spinal stability, range of motion (ROM), stress on internal fixation devices, and adjacent segment degeneration after localized TPOLF treatment using finite element analysis.
methodsCT data of a healthy male volunteer were imported into MIMICS software and further processed with Geomagic software to establish a three-dimensional model of T8-T12. First, the detailed surgical procedures of laminoplasty and in-site regrafting (LPIR) and laminectomy + spinal canal decompression + pedicle screw internal fixation technique (LSPT) were described. Then, two internal fixation schemes were established using SolidWorks software: laminoplasty and in-site regrafting (LPIR) and laminectomy + spinal canal decompression + pedicle screw internal fixation technique (LSPT). The overall ROM, ROM distribution of fixed segments, adjacent segment ROM, Von Mises stress on adjacent intervertebral discs and internal fixation devices were analyzed under physiological loading conditions.
resultsAmong the two groups of internal fixation techniques, LPIR had the highest overall ROM, which was 1.58°, while the overall ROM of LSPT was only 0.40°. The LPIR group experienced greater stress on the adjacent intervertebral discs at the proximal and distal ends, which were 2.30 MPa and 1.79 MPa, respectively. In the LSPT group, the Von Mises stress on the adjacent intervertebral discs at the proximal and distal ends was 2.12 MPa and 0.87 MPa, respectively. In the LPIR group, the titanium plate and screws bore greater stress, which was 363.06 MPa. In all types of movements, the maximum stress on the plate-screw connection site near the laminectomy boundary of the plate was observed. In the LSPT group, the screws showed the maximum Von Mises stress during flexion, which was 60.51 MPa. These biomechanical results were consistent with our previous 2-year clinical follow-up data, which showed that LPIR preserved better spinal mobility with a lower adjacent segment degeneration rate (12.5%) compared with LSPT (25%-35%).
conclusionLaminectomy and pedicle screw internal fixation provide better stability but reduce spinal flexibility. LPIR retains better spinal flexibility and is a feasible treatment strategy for TPOLF.
Indexed as
Identifiers
42637931What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.