ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2025
Thoracic and pelvic compensation during lumbar degeneration: a retrospective study of 625 asymptomatic adults.
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, 2025. 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
purposeTo verify the parameters of thoracic and pelvic compensation and the criteria for initiating compensation during lumbar degeneration in different pelvic incidence (PI) populations.
methodsA total of 625 asymptomatic adult volunteers were enrolled. Radiographic parameters, including the PI, C2‒7 angle (C2‒7), T1 slope, thoracic kyphosis (TK), lumbar lordosis (LL), pelvic tilt (PT), and sagittal vertical axis (SVA), were measured via standing lateral whole-spine radiographs. Those with a PI of 50° or greater are classified into the high-PI group, and those with a PI of less than 50° are classified into the low-PI group.
resultsA total of 332 patients were categorized into the low-PI group, and 293 patients were categorized into the high-PI group. In the low-PI group, PI-LL increases by 10°, TK/PI decreases by 0.13, and PT/PI increases by 0.10. In the high-PI group, PI-LL increases by 10°, TK/PI decreases by 0.12, and PT/PI increases by 0.09. ROC curve analysis revealed that TK/PI and PT/PI had good discriminative power for distinguishing loss of LL in the low-PI group (cutoff values = 0.714 and 0.318, respectively) and in the high-PI group (cutoff values = 0.599 and 0.370, respectively).
conclusionsWith the loss of LL, the PI-LL increases, the TK/PI decreases, and the PT/PI increases due to the occurrence of thoracic and pelvic compensation. The cutoff values of TK/PI and PT/PI can be used to determine whether compensation had occurred in patients with different PIs.
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