Our next poster is titled The Utility of Stress Ultrasound in Identifying Risk Factors for Elbow Ulnar Collateral Ligament Rupture: A Longitudinal Study of 203 Professional Baseball Players. This study was performed by your colleagues at the Rothman Institute and aimed to identify anatomic risk factors on dynamic ultrasound that may predispose players to future UCL injury. The authors found that players who ultimately required UCL reconstruction had greater ulnohumeral joint rest space, higher rates of hypoechoic foci and increased UCL thickness on ultrasound compared to players who did not require UCLR.