Study Design: Retrospective cohort study. Objective: Investigate risk factors for PJK
including theoretical kyphosis, mechanical loading at the UIV and age adjusted offset …

Study Design: Retrospective case series. Objective: Compensatory changes above a
proximal junctional kyphosis (PJK) have not been defined. Understanding these …

Study Design: Retrospective chart review. Objective: The goal of this study is to examine the
relationship between global alignment and proportion (GAP) score and postoperative …

Study Design. Retrospective cohort study. Objective. Understand the benefit of addressing
malalignment in revision surgery for proximal junctional kyphosis (PJK). Summary of …

Objective To introduce a new sagittal parameter, uppermost instrumented vertebra-pelvic tilt
angle (UIVPTA), and to determine the effects on the proximal junctional kyphosis (PJK) …

Study Design. Retrospective review of prospectively collected data. Objective. The aim of
this study was to examine which radiographic parameters and surgical strategies are most …

Study Design Retrospective cohort study. Objective Investigate the patterns of fused lumbar
alignment in patients requiring revision surgery for proximal junctional kyphosis (PJK) …

Study Design. Retrospective review of a prospective database. Objective. The aim of this
study was to define the role of sagittal orientation of the construct at the upper instrumented …

Study Design. Diagnostic binary threshold analysis. Objective.(1) Perform a sensitivity
analysis demonstrating the test performance metrics for any combination of proximal …

Purpose Proximal junctional kyphosis (PJK) in adult spinal deformity (ASD) surgery patients
is a severe complication with potential need for revision surgery. While thoracic kyphosis …