• Hakan Koray Tosyalı, ElibolFatma Kübra ErbayFKEDepartment of Biomedical Engineering, TOBB University of Economics and Technology, Ankara, Turkey. Electronic address: fatmakubra.erbay@gmail.com., Sertan Hancıoğlu, Suat Emre Kaçmaz, Özde İrem Çalışkan, Tolga Tolunay, Teyfik Demir, and Güvenir Okçu.
• Department of Orthopedics and Traumatology, Celal Bayar University Faculty of Medicine, Manisa, Turkey.
• Injury. 2024 Apr 1; 55 (4): 111413111413.

BackgroundIncreased posterior wall acetabular fractures among older adults, require precise treatment to restore stability to the joint, lower the risk of degenerative arthritis, and enhance overall functional recovery. The purpose of this study was to compare the fixation stability and mechanical characteristics of calcaneal buttress plate and conventional reconstruction plate under different loading condition.MethodsTypical acetabular posterior wall fractures were created on twenty synthetic hemipelvis models. They were fixed with calcaneus plate and reconstruction plate. Dynamic and static tests were performed. Displacements of fracture line and stiffness were calculated.FindingsAfter dynamic loading, calcaneus plate fixation has significantly less displacement than the reconstruction plate on the superior posterior wall. Under static loading condition, the calcaneus plate group has significantly less displacement than the reconstruction plate group on the inferior posterior part of the fracture. The average stiffness values of the calcaneus plate group and the reconstruction plate group were 265.16±53.98 N/mm and 167.48±36.87 N/mm, respectively and a statistically significant difference was found between the two groups.InterpretationThe calcaneal plate group demonstrated better stability along the fracture line after dynamic and static loading conditions. Especially when the fragment was on the acetabulum's superior posterior, inferior posterior, and inferior rim, Calcaneal buttress plates offer biomechanically effective choices.Copyright © 2024. Published by Elsevier Ltd.

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