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Posterior Acetabular Fracture Fixation Using Locking Reconstruction Plates: New Technique Developed on Synthetic Models

This report presents new technique developed on synthetic models for fixing posterior acetabular fractures using locking reconstruction plates. The posterior articular surface of the acetabulum makes an average angle of 47 degrees with retroacetabular surface (retroacetabular angle). A locking reconstruction plate fixed at an average angle of 43 degrees with the retroacetabular surface (plate angle) would have its locked screws parallel to the posterior articular surface of the acetabulum avoiding intra-articular penetration. Shorter plates can be used with less soft tissue dissection. Low contact fixation preserves the blood supply of the posterior wall fragment. A modified spiked reconstruction plate facilitates the procedure and provides additional fixation.