- Research Article
- 10.1097/bco.0000000000001343
Prone trans-psoas interbody fusion with anterior longitudinal ligament release for correction of adult spinal deformity: complications and radiographic outcomes
- Feb 20, 2026
- Current Orthopaedic Practice
- Rohan I Suresh + 15 more +15
Background: Prone trans-psoas (PTP) interbody fusion is a minimally invasive technique for sagittal correction in adult spinal deformity. Advantages include enhanced lordosis due to prone positioning and avoidance of patient repositioning. The same approach allows for anterior longitudinal ligament release, which may improve lordotic correction. However, limited data exist on the combined technique, prompting this investigation into postoperative complications and radiographic outcomes of PTP interbody fusion versus combined PTP with anterior longitudinal ligament (ALL) release (PTP-ALL). Methods: A retrospective cohort study was conducted at a tertiary academic center from November 2020 to October 2023. Patients were grouped into two cohorts: PTP and PTP-ALL. Radiographic outcomes included changes in segmental lordosis, lumbar lordosis, L4-S1 lordosis, pelvic incidence-lumbar lordosis (PI-LL) mismatch, T1-pelvic angle, and sagittal vertical axis. Complications assessed were wound infections, venous thromboses, transfusions, and mortalities. Welch’s modified two-sample t-tests and chi-squared tests were used for analysis. Results: Twenty-two patients underwent PTP and six underwent PTP-ALL. There were no significant differences in operative time ( P =0.443), length of stay ( P =0.169), or estimated blood loss ( P =0.795). No complications occurred in the PTP-ALL group. Compared to PTP, PTP-ALL achieved greater improvements in segmental lordosis (9.3° vs. 1.6°, P =0.134), lumbar lordosis (30.6° vs. 8.5°, P =0.003), L4-S1 lordosis (10.2° vs. 6°, P =0.25), and PI-LL mismatch correction (25.8° vs. 8.9°, P =0.036). Conclusions: PTP with ALL release may be a safe and effective option to enhance sagittal correction in adult spinal deformity without increasing perioperative complications. However, the small sample size limits the generalizability of these findings and underscores the need for further study. Level of Evidence: III
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