The Association Between Adjacent Forces and the Development of Proximal Junctional Kyphosis: A Musculoskeletal Analysis.

ABSTRACT: Study DesignBiomechanical modeling study.ObjectivesDespite several recognized risk factors for proximal junctional kyphosis (PJK), its causative mechanism remains unknown. There are limited biomechanical studies to elucidate the association of sagittal alignment with PJK. Our aim is to determine the association of adjacent forces with PJK development.MethodsASD patients operated on with posterior fusion from T9-T11 to the pelvis and had 2 year follow-up were included in this retrospective study. Patient-specific musculoskeletal models were created from EOS images. High vs low normalized vertebral forces were defined based on a threshold of 0.2 for shear and 0.5 for compression. The load ratio was defined as the ratio of immediate postoperative to preoperative vertebral forces.ResultsA tota

SUBMITTER: Alavi F 

PROVIDER: S-EPMC11869222 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature