Bone cement distribution patterns influence cage subsidence after OLIF-AF-SEA in elderly patients with osteoporotic lumbar degeneration.

ABSTRACT:

Purpose

To investigate the correlation between postoperative bone cement distribution patterns and the incidence of cage subsidence in elderly osteoporotic patients undergoing oblique lateral interbody fusion combined with anterolateral fixation and stress endplate augmentation (OLIF-AF-SEA).

Methods

This retrospective study analyzed 86 osteoporotic patients aged ≥ 60 years who underwent single-level L4-5 OLIF-AF-SEA with a minimum postoperative follow-up of 24 months. Postoperative X-rays were used to classify bone cement distribution patterns, including coronal plane distribution (three-zone method), endplate contact (binary classification), and presence of intervertebral leakage. Cage subsidence was defined as a reduction in disc height of ≥ 2 mm. Statistical analyses inc

SUBMITTER: Hu X 

PROVIDER: S-EPMC12849482 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature