Glenoid notching after reverse shoulder arthroplasty: The influence of different neck-shaft angles.

Background: The implications of notching in reverse shoulder arthroplasty (RSA), and its relation with the rate of complications are still unclear. Our main aim was to retrospectively study the notching incidence in the three most used implants in our practice, considering their different neck-shaft angle (NSA) and determine its relation with implant failure, or other complications.

Methods: We retrospectively reviewed medical and imaging records of 259 patients who underwent RSA in our hospital, including surgery reports, prosthesis designs and techniques.