Reverse shoulder arthroplasty: the role of the teres minor and the humeral version in carrying out daily activities
Project objectives
The external rotation deficit observed in patients undergoing reverse shoulder arthroplasty determines an important limitation in the performance of many daily activities. The teres minor (PR) is often intact in posterosuperior rotator cuff tears and its contribution to external rotation could be exploited to achieve better clinical outcomes. The aim of this work was to analyze the influence of the humeral stem positioning on the PR action in order to define the degrees of humeral version which allow to maximize the external rotation during the performance of daily activities. Thanks to a computerized shoulder model and a reverse prosthesis model, it was possible to study the biomechanical properties of the PR, thus providing surgeons with exact indications regarding the positioning of the humeral stem to maximize the functionality of the teres minor and improve postoperative results.
Future research perspectives foresee the use of the same computer model to analyze the influence of the center of rotation and other characteristics of the prosthetic design on the biomechanical and clinical results.
Official Site: link
Start and end date
August 2012 - September 2012
Project managers
Prof. Vincenzo Denaro - Coordinator
Coordinating institution of the project
Università Campus Bio-Medico di Roma
Other Institutions involved in the project
Hospital for Special Surgery, Sports Medicine And Shoulder Service, Department Of Motion Analysis - New York, USA