ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2023
L1-pelvic angle: a convenient measurement to attain optimal deformity correction.
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, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Fused Spinopelvic Angle in Adult Spinal Deformity with Pure Sagittal Malalignment: A Postoperative Threshold Associated with Proximal Junctional Kyphosis.Journal of clinical medicine · 2026Article
- How changes in segmental lordosis impact L1-pelvic-angle after adult spinal deformity surgery: Which lumbar levels matter most?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 · 2026Article
- Improved immediate postoperative T4-L1 hip axis with use of pre-contoured patient-specific rods versus surgeon-contoured rods in adolescent idiopathic scoliosis.Journal of spine surgery (Hong Kong) · 2026Article
- Advancements in sagittal alignment parameters and management of adult spine deformities.Journal of spine surgery (Hong Kong) · 2026Review
- C7 pelvic angle: a useful parameter for spinopelvic alignment evaluation in Lenke 1 and 2 adolescent idiopathic scoliosis.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 · 2026Article
- Pelvic incidence correlates more strongly with proximal than distal lordosis and most strongly with L1-pelvic angle.Spine deformity · 2026Article
- Utility of the L1 pelvic angle (L1PA) for assessment of sagittal alignment of the lumbar spine following short segment fusion: Comparison to segmental measures.North American Spine Society journal · 2025Article
- Application of deformity principles in the management of spinal neoplasms: A Primer.North American Spine Society journal · 2025Article
- The Modified Bohlman Method for Pediatric High-Grade Spondylolisthesis: Greater than 2-year Follow-up Data From a Consecutive Case Series.Journal of the Pediatric Orthopaedic Society of North America · 2025Article
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purpose(1) Evaluate the associations between L1-pelvic angle (L1PA) and both sagittal vertical axis (SVA) and T1-pelvic angle (T1PA), and (2) assess the clinical impact of L1PA.
methodsA single-institution retrospective cohort study was undertaken for patients undergoing adult spinal deformity (ASD) surgery from 2013 to 2017. Ideal L1PA was defined as (0.5xPelvic Incidence)-21. Pearson correlation was performed to compare L1PA, SVA, and T1PA. Univariate/multivariate regression was performed to assess the effect of L1PA on mechanical complications, controlling for age, BMI, and postoperative pelvic incidence-lumbar lordosis mismatch (PI/LL). Due to the overlapping nature of patients with pseudarthrosis and rod fracture, these patients were analyzed together.
resultsA total of 145 patients were included. Mean preoperative L1PA, SVA, and T1PA were 15.5 ± 8.9°, 90.7 ± 66.8 mm, and 27.1 ± 13.0°, respectively. Mean postoperative L1PA, SVA, and T1PA were 15.0 ± 8.9°, 66.7 ± 52.8 mm, and 22.3 ± 11.1°, respectively. Thirty-six (24.8%) patients achieved ideal L1PA. Though the correlation was modest, preoperative L1PA was linearly correlated with preoperative SVA (r
conclusionL1PA was modestly correlated with SVA and T1PA, and achieving ideal L1PA was associated with lower rates of rod fracture/pseudarthrosis. Future studies are warranted to better define the clinical implications of achieving a normal L1PA. LEVEL OF EVIDENCE: III.
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