Study Design. A retrospective study. Objectives. To evaluate the impact of upper
instrumented vertebra (UIV) orientation including the fused spinopelvic angle (FSPA) on …

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 …

Background The present study assumed that the effects of deformity correction amounts on
proximal junctional kyphosis (PJK) development after long deformity surgery would vary …

OBJECTIVE Proximal junctional kyphosis (PJK), which can worsen a patient's quality of life,
is a common complication following the surgical treatment of adult spinal deformity (ASD) …

Introduction Many risk factors for proximal junctional kyphosis (PJK) have been reported in
the literature, especially sagittal alignment modifications, but studies on pelvic tilt (PT) …

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 This was a retrospective analysis of a prospectively collected consecutive case
series of patients with adult spinal deformity (ASD). Objective This study aimed to investigate …

There are still controversies on characteristics and risk factors for proximal junctional
kyphosis (PJK) in adult spinal deformity (ASD) patients. The objective of this study is to …

BACKGROUND CONTEXT: Proximal junctional kyphosis (PJK) is a major complication that
may develop in adult patients who undergo spinal fusion surgery. PURPOSE: The aim of our …

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 …