ArticleCureus2025
Percutaneous Reduction and Fixation for Traumatic Thoracolumbar Vertebral Fracture Using a Monoaxial Screw System.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
BACKGROUND AND
aimThe development of percutaneous pedicle screws (PPSs) has led to the development of minimally invasive spine stabilization (MISt) procedures, which has decreased the invasiveness of spine surgery. Conventionally, PPSs were available as polyaxial screws only, making it technically challenging to perform percutaneous repair of thoracolumbar vertebral fractures with implants. This study aimed to evaluate percutaneous posterior fixation for thoracolumbar vertebral fractures using a monoaxial screw system and determine imaging and clinical outcomes until after implant removal.
methodsWe retrospectively reviewed 20 patients who underwent posterior fixation using the S4 Spinal Fracture Reduction Instrumentation (FRI) system with percutaneous vertebroplasty for traumatic thoracolumbar vertebral fractures. Follow-up continued until after implant removal. AO classification was type A3 in 19 patients and type B2 in one. Implants were removed after confirmation of bone healing. The mean follow-up period was 753 days. We evaluated intraoperative blood loss, operative time, neurological status, and radiological parameters, including local kyphosis angle, wedge deformity rate, and spinal canal stenosis rate.
resultsNo surgical complications (e.g., worsening paralysis or infection) occurred. No patients had implant failure or required blood transfusion during surgery, reoperation, or routine painkiller use at the final follow-up. The mean spinal kyphosis angle was 12.6° preoperatively, 1.9° immediately postoperatively, 6.5° before implant removal, and 7.9° after implant removal, showing significant improvement between the preoperative and immediate postoperative periods. However, there was a significant loss of correction after implant removal compared with immediate postoperatively (mean 6°). Kyphosis angle tended to decrease from the preoperative period to after implant removal, albeit not significantly. The mean wedge deformity rate and spinal canal stenosis rate showed significant improvement immediately postoperatively. These improvements were maintained after implant removal.
conclusionsPosterior fixation using the monoaxial PPS with the S4 Spinal FRI system is minimally invasive and is considered a useful surgical technique for thoracolumbar vertebral fractures.
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