Introduction: Quadrilateral plate fractures constitute one of the most challenging components of acetabular fractures. The objective of this study is to describe and evaluate the novel technique of buttress screw fixation of the quadrilateral plate component of the acetabular fractures.
Patients & Methods: Forty cases of acetabular fracture with associated quadrilateral plate component were included in the study. Mean age was 35 years (range, 16-68years), with a mean follow-up 16.4 months (range, 9-36months). Fixation of the quadrilateral plate was achieved by one or more buttress screws. The screws were inserted through the reconstruction plate, and placed close to the edge of the pelvic brim. To effectively achieve the 3-point fixation principle, the screw was inserted through the plate hole then outside the bone rubbing on the pelvic surface of the quadrilateral plate.
Results: Anatomical reduction of the quadrilateral plate component of the fractures was achieved in all but one patient. The modified Merle D'Aubigné and Postel score was excellent in 13 cases, good in 23 cases, fair in three cases, and poor in one case. No screw displacement or failures were observed during follow-up evaluation. No major complications related to this technique were observed in this series.
Conclusion: Buttress screw fixation of the quadrilateral plate fracture component in associated acetabular fractures is a safe and effective technique for reduction and fixation of these challenging fractures with no major complications related to this novel technique.
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