Functional and Radiological Outcomes of Short-Segment Fixation With Intermediate Screws for Thoracolumbar Spine Fractures

Introduction Thoracolumbar fractures, particularly burst fractures, represent a significant health concern due to their prevalence and functional impact. This study evaluates the efficacy of short-segment posterior fixation with intermediate screw instrumentation in treating unstable thoracolumbar fractures. Methods A prospective study was conducted from July 2022 to December 2023, including 26 patients with traumatic thoracolumbar fractures. Surgical intervention was indicated for patients with a thoracolumbar injury classification and severity (TLICS) score >4. Functional outcomes were assessed using the visual analog scale (VAS), Oswestry Disability Index (ODI), and the American Spinal Injury Association (ASIA) grading system. Radiological outcomes, including the local kyphotic angle (LKA) and anterior vertebral body height ratio (AVBHR), were evaluated preoperatively, postoperatively, and at follow-ups. Results Significant improvements in functional and radiological parameters were observed over 24 weeks. The mean VAS score reduced from 7.50 ± 0.58 preoperatively to 1.42 ± 0.50 (p < 0.001), and the mean ODI improved from 42.23 ± 3.54 to 16.12 ± 3.09 (p < 0.001). Neurological improvements were seen in ASIA grades B-D, with no new deficits. Radiologically, the mean LKA improved from 19.73 ± 1.59° preoperatively to 8.46 ± 1.33° at 24 weeks (p < 0.001), and the AVBHR increased from 34.08 ± 2.25% to 86.64 ± 0.83% (p < 0.001). No implant failures were reported. Conclusion Short-segment fixation with intermediate screws provides effective stabilization and significant functional and radiological improvements in thoracolumbar fractures. It minimizes intraoperative morbidity and preserves motion segments, making it a viable alternative to long-segment fixation, particularly for non-complex fractures. Further randomized controlled trials are recommended to validate these findings.