الفهرس 
Radiological assessment of quality of reduction of acetabular fractures fixation using column screws
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Abstract
Background: The main goal of treating acetabular fractures is achieving anatomical reduction and stable fixation allowing early mobilization and rapid rehabilitation. Objectives: To assess the functional and radiological outcomes of the fixation of acetabular fractures using anterior and posterior column screws, measure length and constriction points of the anterior and posterior columns and to detect ideal screw trajectories using 2D and 3D rendered CT scan images. We also studied the gender differences. Patients and Methods: A prospective study including 31 patients with 33 acetabular fractures fixed using small (3.5 and 4 mm) and large (4.5 and 6.5 mm screws) fragment column screws; either alone or adjunct to ORIF. Results: The mean values of the initial fracture and the maximum residual displacements were 8.2 and 1.7 mm, respectively. 85% and 80% of the patients had excellent and good radiological and functional outcomes, respectively.There was high statistically significant difference between males and females regarding the length, constriction points of the anterior and posterior columns and screws{u2019} trajectories. (P-values <0.001 and 0.027). There was no significant difference between small and large fragment screws regarding the radiological outcome. Five patients developed complications (2 secondary osteoarthritis, 2 iatrogenic sciatic nerve injury and 1 heterotopic ossification)