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Research Article: Trans-intervertebral space osteotomy for post-traumatic thoracolumbar kyphosis: a minimum 2-year follow-up study

Date Published: 2026-07-03

Abstract:
This study aims to evaluate the radiographic results and clinical efficacy of trans-intervertebral space osteotomy (TIO) in the treatment of post-traumatic thoracolumbar kyphosis (PTK). This is a single-center retrospective cohort study. A retrospective analysis was conducted on clinical data from PTK patients who underwent TIO between January 2018 and December 2022. A total of 38 patients (18 males and 20 females) with an average age of 52.1?±?9.2?years were included. According to the Frankel classification, 8 cases were grade D and 30 cases were grade E. Spinal-pelvic sagittal parameters (thoracic kyphosis [TK], thoracolumbar kyphosis [TLK], lumbar lordosis [LL], focal kyphosis [FK], pelvic incidence [PI], pelvic tilt [PT], sacral slope [SS], sagittal vertical axis [SVA]) were measured on lateral spinal X-rays preoperatively, postoperatively, and at the last follow-up. The Visual Analog Score (VAS) and Oswestry Disability Index (ODI) were recorded postoperatively and at the last follow-up, and perioperative/follow-up complications were documented. The average operation time was 277.4?±?33.9?min, with an average intraoperative blood loss of 704.5?±?340.5?mL. All incisions achieved primary healing. The mean follow-up period was 35.1?±?9.4?months (range: 24–56?months). Postoperatively, TK, TLK, LL, FK, and SVA were significantly improved ( p <?0.05), while PT, PI, and SS showed no significant changes ( p >?0.05). These radiographic outcomes remained stable at the last follow-up ( p >?0.05). The preoperative VAS score (6.0?±?1.1) decreased significantly to 1.2?±?0.8 at the last follow-up ( p <?0.05), and the preoperative ODI (56.9?±?7.1%) was reduced to 15.7?±?3.9% ( p <?0.05). At the final follow-up, the Frankel classification showed 3 cases of grade D and 35 cases of grade E. All fixed segments achieved fusion, with no internal fixation loosening or adjacent vertebral fractures. TIO for PTK patients achieves satisfactory correction of spinal deformity and favorable clinical outcomes, with successful fusion and few complications.

Introduction:
This study aims to evaluate the radiographic results and clinical efficacy of trans-intervertebral space osteotomy (TIO) in the treatment of post-traumatic thoracolumbar kyphosis (PTK).

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