Date of Defense


Date of Graduation



Mechanical and Aerospace Engineering

First Advisor

Peter Gustafson

Second Advisor

Claudia Fajardo-Hansfrod


During internal fixation surgery, it is often necessary for surgeons to insert screws into trabecular bone. When a surgeon exceeds the maximum torque that a patient’s bone can withstand, trabecular bone may strip at the screw-bone interface. This effect may be the cause of a negative surgical outcome. A screwdriver was designed with instrumentation for measuring torque and rotation. A printed circuit board was designed and manufactured. A strain gauge based torque sensor was designed and integrated into the screw driver shaft. An algorithm was implemented to measure torque and rotation and provides surgical guidance.

Access Setting

Honors Thesis-Restricted