Influence of Reverse Shoulder Implant Positioning on Patient-Specific Muscle Forces: A Simulation Study
Kayla M Pariser
A reverse shoulder arthroplasty (RTSA) is a common treatment for patients with severe shoulder injuries such as rotator cuff muscle tears and/or severe arthritis. The goal of an RTSA is to stabilize the shoulder and improve a patient’s range of motion. The stability of the shoulder relies on the muscles of the shoulder and with rotator cuff tears, the deltoid muscle becomes the shoulder’s primary stabilizer. The positioning of the implant is important as it directly affects the length of the deltoid muscle moment arm which determines the amount of deltoid muscle force required to produce the necessary torque about the shoulder for it to function after a RTSA. However, it is impossible to experimentally determine the force that the deltoid muscle will be able to produce after surgery. The overall goal of this work is to use simulation and optimization methods to optimize RTSA implant placement and deltoid muscle forces for fifteen RTSA patients. For each of the fifteen patients, a model of the shoulder joint and muscles and an optimization framework will be used to calibrate muscle model parameters and predict the shoulder muscle forces.
Honors Thesis - Undergraduate
Primary Advisor's Department
Mechanical and Aerospace Engineering
Stander Symposium poster
"Influence of Reverse Shoulder Implant Positioning on Patient-Specific Muscle Forces: A Simulation Study" (2017). Stander Symposium Posters. 898.