Faculty Advisor

Billiar, Kristen

Center

University of Massachusetts Medical Center

Abstract

Current screw/plate sternal closure for patients after open-heart surgery requires bicortical fixation which is disadvantageous due to the proximity of the heart. The goal of this project was to design, model and test a single-unit unicortical screw and plate system which provides both lag and locking functionality. The final design utilizes a novel reverse splaying of the head to provide a locking mechanism following initial tightening. The design also allows the surgeon to properly locate and secure the bone to the plate prior to engagement of a locking mechanism. Cyclic shear loading will be used to compare the effectiveness of this screw design with standard non-locking unicortical and bicortical screws.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2012

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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