Increase in Humeral Retrotorsion Accounts for Age-Related Increase in Glenohumeral Internal Rotation Deficit in Youth and Adolescent Baseball Players

Abstract

While there was an increase in GIRD from youth league to high school participants, TROM and retrotorsion-adjusted GIRD remained constant across the age groups, indicating that this increase between the age groups is not pathological GIRD and may not contribute to an increased injury risk.