Patient Reported Outcome After Stemmed Versus Stemless Total Shoulder Arthroplasty for Glenohumeral Osteoarthritis.

Stemless shoulder arthroplasty systems with uncemented metaphyseal fixation have been used in Europe for glenohumeral osteoarthritis since 2004. The stemless design has several theoretical advantages compared with the stemmed shoulder arthroplasty systems: restoring patients' anatomy, preserving humeral bone stock, and few complications in component removal if the need for a revision arthroplasty arises. The purpose of the study is to compare the short-term, patient-reported outcome of stemless and stemmed total shoulder arthroplasty.