A refined porcine lumbar spinal cord injury model facilitating postoperative care
Abstract
Background: Pigs exhibit strong anatomical and neurological similarities to humans, making them valuable translational models for spinal cord injury (SCI) research. While most porcine SCI models target thoracic levels, these are often associated with significant postoperative management challenges, particularly related to urinary function. Methods: To address these limitations, we characterized a refined lumbar SCI model targeting the L3 vertebral level in pigs, based on comparative anatomy and veterinary data. SCI was induced using a contusion-compression paradigm under per-operative C-arm fluoroscopic guidance. Functional assessments were conducted at three time points: 2 days pre-injury, and 2 and 14 days post-injury. These included general activity monitoring, qualitative evaluation using the Porcine Thoracic Injury Behaviour Scale (PTIBS), and quantitative gait analysis using inertial measurement units and electro-goniometers. Animals were euthanized 3 weeks post-injury for ex vivo 7 T MRI and histological analyses. Results: All animals developed complete paraplegia at 2 days post-injury (PTIBS = 1), progressing to severe but partial recovery by day 14, with a significant decrease in PTIBS score (-6.5 ± 0.3) and hip extension (-36.1%). Importantly, all animals exhibited immediate and persistent urinary incontinence, avoiding the need for catheterization. MRI and histological analyses confirmed consistent and reproducible lesions at the injury site, affecting both white and grey matter. Conclusions: This refined lumbar SCI model induces reproducible motor deficits associated with urinary incontinence, facilitating postoperative management while preserving translational relevance. It provides a practical platform for investigating functional recovery and testing therapeutic strategies in SCI.
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BibTeX
@article{prieurblanc2026refined,
title = {{A refined porcine lumbar spinal cord injury model facilitating postoperative care}},
author = {N. Prieur-Blanc and S. Trama and A. Mangini and S. Belluco and Virginie Callot and L. Grima and P. Decherchi and T. Marqueste and A. Hays and N. Serratrice},
journal = {IBRO Neuroscience Reports},
year = {2026},
month = nov,
doi = {10.1016/j.ibneur.2026.05.004},
url = {https://hal.science/hal-05854864v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - A refined porcine lumbar spinal cord injury model facilitating postoperative care
AU - N. Prieur-Blanc
AU - S. Trama
AU - A. Mangini
AU - S. Belluco
AU - Virginie Callot
AU - L. Grima
AU - P. Decherchi
AU - T. Marqueste
AU - A. Hays
AU - N. Serratrice
PY - 2026
DA - 2026/11/06
JO - IBRO Neuroscience Reports
DO - 10.1016/j.ibneur.2026.05.004
UR - https://hal.science/hal-05854864v1
AB - Background: Pigs exhibit strong anatomical and neurological similarities to humans, making them valuable translational models for spinal cord injury (SCI) research. While most porcine SCI models target thoracic levels, these are often associated with significant postoperative management challenges, particularly related to urinary function. Methods: To address these limitations, we characterized a refined lumbar SCI model targeting the L3 vertebral level in pigs, based on comparative anatomy and veterinary data. SCI was induced using a contusion-compression paradigm under per-operative C-arm fluoroscopic guidance. Functional assessments were conducted at three time points: 2 days pre-injury, and 2 and 14 days post-injury. These included general activity monitoring, qualitative evaluation using the Porcine Thoracic Injury Behaviour Scale (PTIBS), and quantitative gait analysis using inertial measurement units and electro-goniometers. Animals were euthanized 3 weeks post-injury for ex vivo 7 T MRI and histological analyses. Results: All animals developed complete paraplegia at 2 days post-injury (PTIBS = 1), progressing to severe but partial recovery by day 14, with a significant decrease in PTIBS score (-6.5 ± 0.3) and hip extension (-36.1%). Importantly, all animals exhibited immediate and persistent urinary incontinence, avoiding the need for catheterization. MRI and histological analyses confirmed consistent and reproducible lesions at the injury site, affecting both white and grey matter. Conclusions: This refined lumbar SCI model induces reproducible motor deficits associated with urinary incontinence, facilitating postoperative management while preserving translational relevance. It provides a practical platform for investigating functional recovery and testing therapeutic strategies in SCI.
SN - 2667-2421
ER -