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
Language
- eng
Conference Location
- United States