Morgan R. Dillon

Poster 204. Using Pitch-Tracking Metrics to Identify Warning Signs Immediately Prior to Acute Ulnar Collateral Ligament Injuries in Major League Baseball Players

Michael A. Mastroianni, Morgan R. Dillon, Nicholas M. Frappa, Matthew R. LeVasseur et autres

Objective: While ulnar collateral ligament (UCL) injuries have been widely studied, no investigations have characterized the kinematics of acutely presenting UCL injuries or examined the pitch-by-pitch sequence leading up to ligament failure. Therefore, the primary objective of this study was to evaluate …

Poster 202. Return to Play and Performance following UCL Reconstruction and Repair in Major League Baseball Position Players

Michael A. Mastroianni, Morgan R. Dillon, Mark Ren, Justin L. Reyes et autres

Objective: Return to play and performance following UCL reconstruction or repair in Major League Baseball (MLB) position players has not been well studied. Modern advanced analytics allow for more accurate evaluation of performance. Therefore, our primary objective is to evaluate return to …

Poster 194. Pitch-Tracking Risk Factors and Warning Signs for Ulnar Collateral Ligament Injuries in Major League Baseball Pitchers

Michael A. Mastroianni, Morgan R. Dillon, Nicholas M. Frappa, Andrew J. Luzzi et autres

Objective: Ulnar collateral ligament (UCL) injuries remain highly prevalent among baseball pitchers across all competitive levels, and there is a need for improved prevention and early detection. The increasing availability of advanced pitch-tracking data allows for granular evaluation of pitching changes that …

Paper 47. Return to Play and Performance following Shoulder Labral Repair in Major League Baseball Players

Michael A. Mastroianni, Morgan R. Dillon, James Muscat, Kyle K. Obana et autres

Objectives: Return to play (RTP) and performance following labral repair in Major League Baseball (MLB) athletes remains poorly defined, particularly when considering both pitchers and position players. To date, most research on labral injuries in MLB players has focused on RTP, workload, …

Hamstring Strain Is Associated with Increased Subsequent Nonhamstring Lower-Extremity Injury in National Football League Players: A Matched Cohort Study

Nicholas Frappa, Morgan R. Dillon, Faizan Munir, Colton Evoniuk et autres

Objective: To evaluate whether hamstring strain (HS) is associated with subsequent nonhamstring lower-extremity injury (NHLEI) after return to play (RTP) in National Football League (NFL) players and whether RTP timing influences risk. Design: Retrospective matched cohort study. Setting: Publicly available NFL injury …

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Age-Stratified Sequelae After Nonoperative Distal Radius Fractures: A Propensity-Matched Cohort Study

Nicholas Frappa, Morgan R. Dillon, Aidan G. Papalia, Matthew G. Alben et autres

BACKGROUND: Distal radius fractures (DRFs) in older adults are frequently managed nonoperatively. However, treating "older adults" as a single group may obscure meaningful age-related differences in outcomes. We compared early and late sequelae after initial nonoperative management of DRFs in patients aged …

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Factors Associated With Cumulative Shoulder and Elbow Injury Burden: A Retrospective Cohort Study of 1445 Major League Baseball Pitchers (2015-2025)

Morgan R. Dillon, Michael A. Mastroianni, Nicholas Frappa, Joseph Manzi et autres

Background: Injured-list (IL) time reflects the clinical and competitive impact of pitching injuries, but determinants of cumulative injury burden have rarely been evaluated league-wide using integrated workload and pitch-tracking data. Purpose: To leverage large-scale public data to identify pitcher characteristics associated with …

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Pre-operative proton pump inhibitor use and risk of adverse outcomes after total elbow arthroplasty: a propensity-matched analysis

Nicholas Frappa, Morgan R. Dillon, Samuel I. Fuller, Alexandra DiVasta et autres

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Pitch Performance After Ulnar Collateral Ligament Surgery in Major League Baseball Pitchers

Michael A. Mastroianni, Jennifer A. Kunes, Morgan R. Dillon, Aaron Z. Chen et autres

Background: Return to performance after ulnar collateral ligament (UCL) surgery in Major League Baseball (MLB) pitchers has been investigated; however, pitch-specific return to performance using several advanced metrics has been minimally studied. Purpose: To evaluate pitch performance 1, 2, and 3 seasons …

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Advanced Analytic and Pitch-Tracking Risk Factors for Capsulolabral Injuries in Major League Baseball Pitchers

Michael A. Mastroianni, Morgan R. Dillon, Kyle K. Obana, Cole R. Morrissette et autres

Background: Shoulder instability is a significant cause of disability in pitchers. The advent of advanced pitch-tracking technology now provides an opportunity to investigate the mechanical factors associated with these injuries on a large scale in Major League Baseball (MLB). Purpose/Hypothesis: The purpose …

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Direct arm angle versus release-based proxies in Major League Baseball pitchers: a large-scale validation study

Morgan R. Dillon, Nicholas Frappa, Michael A. Mastroianni, Robert A. Ablove et autres

Arm slot has been implicated in pitching biomechanics and injury risk, yet large-scale studies relied on indirect release-based proxies, yielding contradictory findings. With Statcast’s Hawk-Eye system providing an anatomically defined measure of arm angle, this study evaluated how well surrogate metrics track …

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Return to Play and Performance Following UCL Reconstruction and Repair in Major League Baseball Position Players

Michael A. Mastroianni, Morgan R. Dillon, Justin L. Reyes, Mark Ren et autres

Background: Return to play and performance following elbow ulnar collateral ligament (UCL) reconstruction or repair in Major League Baseball (MLB) position players have not been well studied. Purpose: To evaluate return to play and return to performance using modern advanced analytics at …

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