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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Preventing Tommy John Surgery: The Identification of Trends in Pitch Selection, Velocity, and Spin Rate Before Ulnar Collateral Ligament Reconstruction in Major League Baseball Pitchers
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Preventing Tommy John Surgery: The Identification of Trends in Pitch Selection, Velocity, and Spin Rate Before Ulnar Collateral Ligament Reconstruction in Major League Baseball Pitchers

机译：防止Tommy John手术：在主要联盟棒球投手的Ulnar侧韧带重建之前，识别音调选择，速度和旋转速率趋势

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Background: Ulnar collateral ligament (UCL) reconstruction is a common surgery among Major League Baseball (MLB) pitchers that results in a significant number of missed games. Little has been reported regarding game-by-game trends that can identify those on the verge of becoming injured. Purpose: To determine if there is a patterned change in MLB pitchers’ pitch selection, velocity, or spin rate in games leading up to Tommy John surgery that may predict subsequent UCL surgery. Study Design: Case series; Level of evidence, 4. Methods: A retrospective review of MLB pitchers who underwent primary UCL reconstruction between 2009 and 2019 was performed. Pitch characteristics were evaluated on a game-by-game basis for the 15 games leading up to surgery. A Mann-Kendall trend test was used to identify trends in pitch selection, velocity, and spin rate for multiple pitch types. A Kendall τ _(b) correlation coefficient was identified, with values closer to 1 or?–1 signifying a stronger monotonic trend. Results: A total of 223 MLB pitchers underwent UCL reconstruction in the time period. In the 15 games leading up to surgery, decreases in pitch velocity for 4-seam fastballs (τ _(b) =?–0.657; P & .001), 2-seam fastballs (τ _(b) =?–0.429; P = .029), and sliders (τ _(b) =?–0.524; P = .008) were significantly associated with game number closer to injury. There was a significant positive association in the spin rate for cutters (τ _(b) = 0.410; P = .038) and a significant negative association in spin rate for 4-seam fastballs over the course of these 15 games (τ _(b) =?–0.581; P = .003). In addition, there was a significant positive association in the percentage of curveballs thrown (τ _(b) = 0.486; P = .013). Conclusion: The study results suggest that there is a patterned change in certain pitch statistics in MLB pitchers in the games leading up to Tommy John surgery. Although the absolute change from game to game may be small, it may be possible for these trends to be monitored before a player becomes injured, thus reducing the significant burden Tommy John surgery places on these athletes.
机译：背景：Ulnar副韧带（UCL）重建是主要联盟棒球（MLB）投手的常见手术，导致大量错过的比赛。有人毫无疑问，可以识别濒临受伤的人的游戏趋势。目的：确定MLB投手的音调选择，速度或旋转速率是否存在图案化的变化，从而导致Tommy John手术的游戏中可能预测随后的UCL手术。研究设计：案例系列;证据级别，4.方法：对2009年至2019年初级UCL重建进行的MLB投手的回顾性审查。在游戏旁观游戏基础上评估俯仰特性，以获得通往手术的15场比赛。 MANN-KENDALL趋势试验用于识别多个间距类型的音高选择，速度和旋转速率的趋势。识别出Kendallτ_（b）相关系数，值更接近1或Δ-1表示更强的单调趋势。结果：共有223毫升投手在时间段内接受UCL重建。在通往手术的15场比赛中，4缝快球的音高速度下降（τ_（b）=α - 0.657; p＆amp; .001），2°Fastballs（τ_（b）=？ -0.429; p = .029）和滑块（τ_（b）=？ - 0.524; p = .008）与更接近伤害的游戏编号显着相关。切割器的旋转速率存在显着的正关联（τ_（b）= 0.410; p = .038）和在这15场比赛的过程中为4缝快速球的旋转速率的显着负关联（τ_（ b）=？ - 0.581; p = .003）。此外，患有曲线球的百分比存在显着的正相关（τ_（b）= 0.486; p = .013）。结论：研究结果表明，在汤米约翰手术的比赛中，MLB投手中的某些音高统计数据有一种模式变化。虽然从游戏到游戏的绝对变化可能很小，但在玩家受伤之前可以监测这些趋势，从而减少了这些运动员上的重要负担汤米约翰手术。

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