ArticleFrontiers in surgery2026
Analysis of spino-pelvic sagittal parameters in patients with highly downward-migrated lumbar disc herniation.
Article in Frontiers in surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To investigate the characteristics of spino-pelvic sagittal alignment in patients with highly downward-migrated lumbar disc herniation (HDM-LDH). Methods: A retrospective analysis was conducted on 149 hospitalized patients diagnosed with HDM-LDH, and 138 asymptomatic adults undergoing physical examination were enrolled as the control group. Sagittal alignment parameters including thoracic kyphosis (TK), thoracolumbar kyphosis (TLK), lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), PI-LL, and sagittal vertical axis (SVA) were measured on standing full-spine lateral radiographs. The differences in these parameters between the two groups were analyzed. Results: Compared to the control group, the HDM-LDH group exhibited significantly lower LL and SS, whereas PT, SVA, and PI-LL were significantly higher ( Conclusion: Patients with HDM-LDH exhibit distinct spino-pelvic sagittal characteristics compared to asymptomatic individuals, characterized by loss of lumbar lordosis, pelvic retroversion, and a nearly straight spinal alignment with horizontally oriented intervertebral discs. These morphological features alter the biomechanical structure of the spine and may underlie the pathogenesis of downward-migrated disc herniation.
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