A systematic review of patient-reported outcome measures used in shoulder instability research.

Background: Shoulder instability is extremely common, with various outcome scores used to assess its progression after treatment. This review was performed to identify the scores most commonly used and to evaluate them according to the 4 core domains of shoulder trials (according to the Core Outcome Measures in Effectiveness Trials [COMET] initiative) and their respective psychometric qualities.

Methods: A systematic review of the literature of 3 databases (MEDLINE, Embase, PubMed) was undertaken.