ArticleGlobal spine journal2026
Vertebral Rotation Discrepancy for Distal Add-on when Selecting the Touched Vertebra as the Lowest Instrumented Vertebra in Thoracic Curves of Adolescent Idiopathic Scoliosis.
Article in Global spine journal, 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
Study DesignRetrospective cohort study.ObjectivesTo assess the influencing factors of the distal add-on when selecting the touched vertebra (TV) as the lowest instrumented vertebra (LIV) in thoracic idiopathic scoliosis (IS).MethodsA total of 96 thoracic IS patients who underwent deformity correction with LIV = TV were retrospectively analyzed to evaluate the distal add-on. Patients were divided into the DA group and the non-DA group. Radiological variables included coronal (Cobb's angle, coronal balance, sacral slanting angle, and L4 vertebral tilt), sagittal (sagittal vertical axis, thoracic kyphosis, and lumbar lordosis), and axial parameters (vertebral rotation angle).ResultsWhen selecting the TV as the LIV, the occurrence rate of distal add-on was 20.8% (20 of 96) at a mean follow-up of 3 years. The mean number of remnant motion segments was significantly higher in the DA group (4.7) compared to the non-DA group (3.8) (
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