210. Pelvic nonresponse is associated with failure to restore low lumbar lordosis and a higher rate of mechanical complications in adult spinal deformity patients

Despite achieving seemingly adequate sagittal alignment following fusion, compensatory retroversion of the pelvis may still fail to resolve in adult spinal deformity (ASD) patients, referred to as pelvic nonresponse. While linked to adverse surgical outcomes, predicting nonresponse is less well understood. We hypothesize that ‘pelvic nonresponders’, defined as patients who maintain a high pelvic tilt (PT) postoperatively, will have worse correction of sagittal alignment and experience higher mechanical complications than ‘pelvic responders’, whose pelvic tilt is corrected.

Source: The Spine Journal - August 22, 2023 Category: Orthopaedics Authors: Tyler Metcalf, Hani Chanbour, Jeffrey Chen, Graham Johnson, Mason Young, Mitchell Bowers, Julian Lugo-Pico, Amir Abtahi, Scott Zuckerman, Byron Stephens Source Type: research