Biomechanical consequences of fracture and repair of the posterior wall of the acetabulum.

Journal Article (Journal Article)

We measured the distribution of contact area and pressure between the acetabulum and the femoral head of cadaveric pelves in three different conditions: intact, with an operatively created fracture of the posterior wall, and after anatomical reduction and fixation of the fracture with a buttress plate and interfragmentary screws. The study involved eight cadaveric hip joints from five pelves loaded to 2000 newtons in simulated single-limb stance. Measurements were made with pressure-sensitive film. The acetabulum was divided into three areas--the anterior wall, the superior aspect, and the posterior wall--for the analysis of the data. Creation of a fracture of the posterior wall was followed by an increase in contact area, maximum pressure, and contact force in the superior aspect of the acetabulum. A concomitant decrease in these parameters was observed in the anterior and posterior walls. Anatomical reduction and fixation of the fracture with a plate and screws did not restore the pattern of loading to pre-injury levels.

Full Text

Duke Authors

Cited Authors

  • Olson, SA; Bay, BK; Chapman, MW; Sharkey, NA

Published Date

  • August 1995

Published In

Volume / Issue

  • 77 / 8

Start / End Page

  • 1184 - 1192

PubMed ID

  • 7642663

International Standard Serial Number (ISSN)

  • 0021-9355

Digital Object Identifier (DOI)

  • 10.2106/00004623-199508000-00007


  • eng

Conference Location

  • United States