Faculty Advisor

Billiar, Kristen

Faculty Advisor

Gielo-Perczak, Krystyna

Faculty Advisor

Pins, George

Abstract

The goal of this project was to develop a bilateral rigid sternal fixation testing system to measure bone separation and screw loosening of bisected sternal halves. Custom fixtures and program were created to test using the Instron. Bone separation and screw loosening were measured to analyze the effectiveness of hardware types to minimize them. Unicortical and bicortical configurations were found to perform similarly in polyurethane bone. Unicortical configurations performed better in cadaveric tissue. Screws of 2.3mm diameter seem to perform better than 2.0 and 2.7mm diameter. Standard and locking plates comparably minimized bone separation and screw loosening. The results of this research provide a basis for future research in rigid sternal fixation systems.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2010

Major

Mechanical Engineering

Major

Biomedical Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Biomedical Engineering

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