Novel mathematical model for preoperatively predicting pelvic tilt in patients with thoracolumbar kyphosis due to ankylosing spondylitis after three-column osteotomy.

ABSTRACT:

Objectives

This study aimed to introduce a novel mathematical model for preoperative precalculated pelvic tilt (PT) in patients with thoracolumbar kyphosis due to ankylosing spondylitis (AS) after three-column osteotomy.

Methods

A total of 20 patients with AS, including 19 men and one woman, who underwent three-column osteotomy from April 2017 to April 2021, in the study hospital were retrospectively reviewed. Spinopelvic parameters, including global kyphosis, pelvic incidence, sacral slope, PT, sagittal vertical axis, horizontal distance between hip axis and hilus pulmonis (HDHH), measured on preoperative, postoperative, and final follow-up radiographs were analyzed. A coordinate diagram was created on the lateral spine radiographs with the hip axis as the origin. The dista

SUBMITTER: Yin W 

PROVIDER: S-EPMC12313790 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature