A comparison of the clinical efficacy of Supra-pectineal High Posterior Column Plate and Reconstruction Plate in acetabular fractures involving the quadrilateral plate

<title>Abstract</title> <p>Background Acetabular fractures with quadrilateral plate (QLP) displacement are challenging to treat. Traditional reduction plates (RP) require contouring, which prolongs surgery time, increases blood loss, and compromises stability. The supra-pectineal high posterior column plate (SHPCP, Dabo Medical) is an anatomically contoured plate suitable for displaced QLP fractures, enabling single-approach fixation of the anterior column, posterior column, and QLP. This study compared the SHPCP with the traditional RP in patients with this type of fracture, evaluating their performance in terms of perioperative outcomes, reduction quality, hip function, and complications to assess the SHPCP’s additional clinical value. Methods This retrospective study included 40 patients with displaced QLP fractures (22 treated with SHPCP via a single anterior approach, 18 with RP). Perioperative parameters, reduction quality (Matta criteria), 12‑month hip function (modified Merle d’Aubigné‑Postel score), and complications were recorded and compared after multivariate adjustment. Results The SHPCP group had significantly less intraoperative blood loss (302.27 ± 151.56 vs. 505.56 ± 214.81 mL, P = 0.001) and shorter operative time (153.82 ± 48.93 vs. 247.39 ± 70.37 min, P &lt; 0.001). No significant differences were found in hospital stay, reduction quality, or overall complications (P &gt; 0.05). SHPCP allowed earlier partial and full weight‑bearing (P = 0.007 and P = 0.032) and yielded higher functional scores at 12 months (15.59 ± 1.10 vs. 14.44 ± 1.79, P = 0.049), with an excellent/good rate of 86.4% versus 61.1% in controls. Conclusion Compared with RP, SHPCP enables treatment through a single anterior approach with less surgical trauma, greater efficiency, earlier weight‑bearing, and better short‑term hip function, without compromising reduction quality or increasing complications. It represents a promising alternative for acetabular QLP fractures.</p>