Abstract
BackgroundTo place the magic screw more simply, we established a set of reproducible fluoroscopic views and a standardized procedure of magic screw insertion.Materials and methodsThis study on the magic screw tunnel uses a three-dimensional reconstruction model and a skeleton projection. The 3D model of the pelvis was made to be transparent and it was rotated to the place where the ischial spine was just sheltered by the posterior wall of the acetabulum. The angles of this view projection were recorded in the transverse plane and coronal plane. Six cadaveric pelvises (three males, three female) were used to validate the proper projection angle of the C-arm fluoroscopy. The skeleton specimens were all positioned latericumbent on a radiolucent table.ResultIn all pelvis 3D models, all magic cylinders with a 7.3 mm diameter were successfully inserted along the bone structure tunnel in 30 3D pelvic models. The average angle of the transverse view rotated by the C-arm fluoroscopy was 162° in males and 157° in females, the angle of the coronal plane was 22° in males and 24° in females. The average distance between the front wheel of the C-arm machine and the middle axial line of the radiolucent bed was 43 cm in males and 43 cm in females. In skeleton pelvis research, all the screws were safely inserted using this method.ConclusionThe magic screw technique could be a good choice for the treatment of acetabular fractures, especially quadrilateral plate fractures. If the proper fluoroscopy view technique is used properly, the magic screw can be inserted rapidly and safely.
Highlights
To place the magic screw more we established a set of reproducible fluoroscopic views and a standardized procedure of magic screw insertion
Result: In all pelvis Three dimensional (3D) models, all magic cylinders with a 7.3 mm diameter were successfully inserted along the bone structure tunnel in 30 3D pelvic models
The magic screw technique could be a good choice for the treatment of acetabular fractures, especially quadrilateral plate fractures
Summary
To place the magic screw more we established a set of reproducible fluoroscopic views and a standardized procedure of magic screw insertion. Acetabular fractures are characteristic injuries in high energy trauma patients, which remains to be the most challenging fracture for surgeons due to the complex anatomy and complicated injury mechanism [1]. Li et al BMC Musculoskeletal Disorders (2018) 19:332 experienced orthopedic surgeon in our clinical practice [10, 11]. To place the magic screw more a set of reproducible fluoroscopic views and a standardized procedure of magic screw insertion were established. This study delineates the technique of screw penetration based on anatomic studies, the readily reproducible fluoroscopic view, and the clinical practice in order to establish this new method
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