Preliminary Clinical and Radiographic Outcomes of the Prone-Angled Transpsoas Approach for Lateral Lumbar Interbody Fusion: A Consecutive Clinical Series

Background and objectives: The prone-angled transpsoas (PAT) approach is a novel lateral lumbar interbody fusion technique that combines the workflow and sagittal alignment advantages of prone positioning with a navigated angled anterior-to-psoas trajectory. Although technical feasibility has been described, clinical outcomes remain limited. This study reports the preliminary clinical, radiographic, and perioperative outcomes of PAT for degenerative lumbar pathology.

Methods

A retrospective consecutive cohort study included 35 patients who underwent PAT at a single institution. Clinical outcomes included visual analog scale (VAS) scores for back and leg pain and Oswestry Disability Index. Radiographic outcomes included lumbar lordosis (LL) and segmental lordosis. Perioperative variables and complications were recorded. Preoperative and postoperative outcomes were compared using paired t-tests with available paired observations.