The study of screw placement parameters for Ogawa type I acromial fractures by 3D simulation

Abstract Background Acromial fractures are rare and there is no consensus on fixation, but an increasing number of studies have reported using two screws to fix Ogawa type I acromial fractures. The objective this study was obtain the ideal length, diameter, insertion point, angle screw a novel 3D simulation. Methods scapular CT data 100 individuals were obtained reconstruct models. transparency model then downgraded along axial perspective (the view perpendicular cross section acromion axis) find maximum translucent area. Two virtual placed at anterior edge until they penetrated posterior cortical bon. largest diameters lengths measured, direction point observed. Results mean medial lateral 43.33 ± 6.17 mm 39.23 6.01 mm, respectively. 4.71 1.23 4.97 1.07 Differences in between males females found. differences sexes not statistically significant. Conclusions Based test, we recommend size, entry points, angles for fractures, providing valuable guidance clinical work. More accurate parameters can be preoperatively by establishing individualized model.