A guideline for screw fixation of coracoid process base fracture by 3D simulation

Abstract Background Fractures of the base coracoid process are relatively rare, but an increasing number studies have reported using screws to fix fractures. This study was performed simulate surgical procedure and obtain ideal diameter, length, insertion point angle screw from a 3-D axial perspective in Chinese patients. Methods We randomly collected right scapula computed tomography (CT) scans 100 adults. DICOM-formatted CT scan images were imported into Mimics software. A 3D digital model established. Two virtual cylinders representing two placed top neck across process. The largest secure diameters lengths measured. positions points directions also examined. Results safe zone can exhibit irregular fusiform shape according reconstructed model. mean maximum medial lateral 7.08 ± 1.19 mm 7.34 1.11 mm, respectively. 43.11 6.31 48.16 6.94 corridor with diameter at least 4.5 found all sex-dependent differences screws. statistically different sexes. Conclusions provides valuable guideline for determining fixing fracture For placement, we suggest individualised preoperative reconstruction simulations. Further biomechanical needed verify function