Faculty Advisor

Billiar, Kristen

Center

University of Massachusetts Medical Center

Abstract

Failure to properly close the sternum after a sternotomy can lead to complications. Current sternal fixation devices, including screw and plate systems, reduce the risk of complications but are unable to provide a flush fit with the sternum and prevent screw loosening. The first goal of this study was to optimize a screw and plate system that addresses this issue. The system utilizes a lag-lock mechanism that permits locking of the screw after the plate is flush fit with the bone. The second goal was to design and characterize a sternal model to mimic the mechanical properties of bone. It was characterized using axial and lateral pullout tests and compared to a standard bone model. In testing, the custom model performed similar to how bone is expected to, making it a better sternal model.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2013

Major

Biomedical Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Biomedical Engineering

Project Center

University of Massachusetts Medical Center

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