Owing to rapidly changing global demographics, adult spinal deformity (ASD) now accounts
for a significant proportion of the Global Burden of Disease. Sagittal imbalance caused by …

Proximal junction kyphosis (PJK) is a common imaging finding after long-level fusion, and
proximal junctional failure (PJF) is an aggravated form of the progressive disease spectrum …

Study Design. Retrospective study. Objective. To validate the age-adjusted ideal sagittal
alignment in terms of proximal junctional failure (PJF) and clinical outcomes. Summary of …

Study Design This was a retrospective observational study. Objectives The purpose of this
study was to evaluate bone mineral density using Hounsfield unit (HU) values at the upper …

BACKGROUND CONTEXT The effect of the degree of lumbar lordosis (LL) correction on
proximal junctional kyphosis (PJK) has not been analyzed in context of the age-adjusted …

Study Design. Retrospective comparative study Objective. To assess the relationship of
fusion mass bone density on computed tomography (CT) and the development of rod …

Study Design A retrospective observational study. Objective The purpose of this study was to
evaluate the Global Alignment and Proportion (GAP) score and mechanical failure (MF) …

Objective To evaluate the learning curve of minimally invasive scoliosis surgery (MISS) in
patients with adolescent idiopathic scoliosis (AIS). Methods A total of 76 AIS patients who …

Study Design: A retrospective cohort study. Objective: To evaluate the mid-term effect of
intervertebral disc degeneration (DD) in adolescent idiopathic scoliosis (AIS) patients who …

Objective Proximal junctional failure following surgical correction for adult spinal deformity
significantly impacts quality of life and increases the economic burden of treating underlying …