Incidence Of Elbow Ulnar Collateral Ligament Surgery In Collegiate Baseball Players

Objectives: Recent studies in the literature have highlighted the progressive increase in the incidence of ulnar collateral ligament (UCL) injuries to the elbow in baseball players of all levels. However, knowledge of the incidence and other epidemiological factors regarding UCL injuries, specifically in college baseball players, is currently lacking. In 2016, we launched a prospective, multi-year study to evaluate the incidence of UCL injuries requiring surgery in National Collegiate Athletic Association (NCAA) Division I baseball programs. Methods: We invited 157 Division I collegiate baseball programs after the 2017 season, and 155 agreed to participate in the study. After the 2018 season, all 297 programs were invited and 294 participated. At the conclusion of the 2017 and 2018 collegiate baseball seasons, the athletic trainer for each program entered anonymous, detailed information on injured players through an electronic survey into a secured database. Results: We obtained a 100% completion rate in the first two years of this ongoing study (155/155 respondents in the first year, 294/294 in the second year). Of the 5,364 collegiate baseball players tracked in Year 1 (2016-2017), 134 underwent surgery for an injured UCL, resulting in a team surgery rate of 0.86 per program. In Year 2 (2017-2018), there were 230 surgeries reported from 10,019 players tracked, resulting in a team surgery rate of 0.78 per program. A majority of schools experienced at least one surgery during both years (56.8% in Year 1, 50.7% in Year 2). Pitchers experience a vast majority of the surgical injuries (85.8% in Year 1, 84.3% in Year 2). Underclassmen made up 65.7% of surgeries in Year 1, which fell slightly to 56.1% in Year 2. Nearly half of the surgeries occurred during an ongoing baseball season in Year 1 (48.5%), but this fell in Year 2 to 41.3%. In both years, a non-significant majority of players were from warm-weather states (65.4% in Year 1, 52.9% in Year 2). Revision surgical rates remained nearly constant with 3.0% revision surgeries in Year 1 compared with 2.6% revisions in Year 2. Interestingly, the percentage of UCL repairs with internal brace augmentation rose from 9.5% in Year 1 to 19.9% of all procedures in Year 2. Conclusion: The incidence of UCL surgeries in NCAA Division I collegiate baseball players represents substantial morbidity to this young athletic population. This multi-year prospective study has been established to assess the incidence of surgical U