Faculty Advisor

Billiar, Kristen

Center

UMMC / 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

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