Erickson Brandon J, Chalmers Peter N, Romeo Anthony A, Ahmad Christopher S
Division of Sports and Shoulder, Hospital for Special Surgery, New York, New York, USA.
Department of Orthopaedic Surgery, University of Utah, Salt Lake City, Utah, USA.
Orthop J Sports Med. 2018 Mar 26;6(3):2325967118761354. doi: 10.1177/2325967118761354. eCollection 2018 Mar.
Injury rates among Major League Baseball pitchers have been increasing over the past several years. It is currently unknown whether pitching a complete game (CG) is a risk factor for spending time on the disabled list (DL).
PURPOSE/HYPOTHESIS: The purpose of this study was to determine the relationship between pitching a CG and time on the DL. We hypothesized that pitchers who threw a CG (1) would be at increased risk for spending time on the DL, which would be earlier in the season and for a longer period, than those who did not and (2) would be at further increased risk for spending time on the DL during subsequent seasons than matched controls.
Descriptive epidemiology study.
Pitchers who threw a CG between 2010 and 2016 at the major league level and were placed on the DL during the same season were included. Timing and length of period on the DL were determined, as well as placement on the DL during subsequent seasons. Matched controls who did not throw a CG were assessed for time spent on the DL during that season and subsequent seasons.
Overall, 246 individual pitchers (501 pitcher-seasons) threw at least 1 CG between 2010 and 2016. Of the pitcher-seasons, 370 (73.9%) included a period on the DL, as compared with only 20% of controls. There were no differences in length of time on the DL ( = .928) or days from season start to time on the DL ( = .861) between pitchers who threw a CG and controls. Pitchers who threw a CG were significantly more likely than controls to spend subsequent seasons on the DL (1.9 ± 1.1 vs 0.5 ± 0.9, < .001).
Overall, 74% of pitchers who threw a CG spent time on the DL, as compared with 20% of controls. Pitchers who threw a CG during the study period spent more time in subsequent seasons on the DL than did matched controls who did not throw a CG.
在过去几年中，美国职业棒球大联盟投手的受伤率一直在上升。目前尚不清楚投完全场比赛（CG）是否是导致球员进入伤病名单（DL）的风险因素。
目的/假设：本研究的目的是确定投完全场比赛与进入伤病名单时间之间的关系。我们假设投完全场比赛的投手（1）进入伤病名单的风险会增加，与未投完全场比赛的投手相比，进入伤病名单的时间会更早且持续时间更长；（2）与匹配的对照组相比，在随后的赛季中进入伤病名单的风险会进一步增加。
描述性流行病学研究。
纳入2010年至2016年在大联盟级别投完全场比赛且在同一赛季进入伤病名单的投手。确定进入伤病名单的时间和时长，以及随后赛季中进入伤病名单的情况。对未投完全场比赛的匹配对照组，评估其在该赛季及随后赛季中进入伤病名单的时间。
总体而言，246名投手（501个投手赛季）在2010年至2016年期间至少投了1次完全场比赛。在这些投手赛季中，370个（73.9%）包括进入伤病名单的时期，而对照组仅为20%。投完全场比赛的投手与对照组在伤病名单上的时长（P = 0.928）或从赛季开始到进入伤病名单的天数（P = 0.861）没有差异。投完全场比赛的投手在随后赛季进入伤病名单的可能性显著高于对照组（1.9±1.1对0.5±0.9，P < 0.001）。
总体而言，投完全场比赛的投手中74%进入了伤病名单，而对照组为20%。在研究期间投完全场比赛的投手在随后赛季中进入伤病名单的时间比未投完全场比赛的匹配对照组更长。
