Multi-slice Computed Tomography Scan Assessment of Accuracy and Safety of Free-hand Pedicle Screw Fixation in Adolescent Idiopathic Scoliosis

Background Data: Various methods to help guidance of screw purchase in AIS have been described the literature. Free-hand technique is a relatively easy and as accurate other methods. MSCT scan, most method postoperative evaluation still needs more research. Purpose: The aim this study evaluate accuracy safety pedicle fixation (PSF) with free-hand using scan. Study Design: Prospective clinical case study. Patients Methods: In prospectively all patients underwent correction PSF were reported. All whole spine X-ray scan during follow up. Screw purchases evaluated according Gertzbein Robbin classification. Results: A total 45 recruited for mean age 14.7±1.7 including 39 females 6 males. Of 870 screws, 85.1% (740) screws within pedicle, while 14.9% (130) penetrated medial wall penetration (5.9%) lateral (9.0%). Overall, 18.3% thoracic 5.9% lumbar pedicle. Correlation age, sex, curve type, Cobb angle, spinal region showed no statistically significant correlation. Conclusions: data prospective suggest that adolescent idiopathic scoliosis population appears be an safe procedure. (2022ESJ263)