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Degree of displacement seen on preoperative AP pelvis view
1%
35/2741
Degree of displacement seen on preoperative Judet views
5%
134/2741
Degree of displacement seen on preoperative pelvic CT scan
13%
363/2741
Degree of displacement seen on postoperative Judet views
368/2741
Degree of displacement seen on postoperative pelvic CT scan
67%
1835/2741
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Moed et al performed a study to determine the clinical outcome in patients in whom a displaced fracture of the posterior wall of the acetabulum had been treated by open reduction and internal fixation. They were able to show good to excellent clinical results for patients who underwent anatomic reduction and internal fixation of posterior wall acetabulum fractures as assessed using radiographs. Fractures in elderly patients and patients who sustained extensive comminution were more likely to have worse clinical result. In a separate study, Moed et al. evaluated the results of 67 patients who underwent ORIF of a posterior wall fractures by assessing the accuracy of postoperative AP pelvis, obturator oblique films, iliac oblique films, and CT scans. They found that postoperative pelvic CT scan was the most accurate way to judge final fracture reduction and was able to pick up residual fracture displacements that were not seen on postoperative plain radiographs. They concluded that the accuracy of reduction as assessed on postoperative CT scan was the most reliable indicator of clinical outcomes.
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