- 作者：Robert A. Keller ; MD ; robkeller23@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Nathan E. Marshall ; MD ; John-Michael Guest ; BA ; Kelechi R. Okoroha ; MD ; Edward K. Jung ; MD ; Vasilios Moutzouros ; MD
- 关键词：Level III ; Case-Control Design ; Epidemiology Study
- 刊名：Journal of Shoulder and Elbow Surgery
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：25
- 期：4
- 页码：671-675
- 全文大小：180 K
Methods
Eighty-three MLB pitchers who underwent primary UCL reconstruction were evaluated. Pitching velocity and percent of pitch type thrown (fastball, curve ball, slider, and change-up) were evaluated 2 years before and after surgery. Data were compared with control pitchers matched for age, position, size, innings pitched, and experience.
Results
The evaluation of pitch velocity compared with matched controls found no differences in pre-UCL reconstruction pitch velocities for fastballs (91.5 vs. 91.2 miles per hour [mph], P = .69), curveballs (78.2 vs. 77.9 mph, P = .92), sliders (83.3 vs. 83.5 mph, P = .88), or change-ups (83.9 vs. 83.8 mph, P = .96). When the percentage of pitches thrown was evaluated, UCL reconstructed pitchers pitch significantly more fastballs than controls (46.7% vs. 39.4%, P = .035). This correlated to a 2% increase in risk for UCL injury for every 1% increase in fastballs thrown. Pitching more than 48% fastballs was a significant predictor of UCL injury, because pitchers over this threshold required reconstruction (P = .006).
Conclusion
MLB pitchers requiring UCL reconstruction do not pitch at higher velocities than matched controls, and pitch velocity does not appear to be a risk factor for UCL reconstruction. However, MLB pitchers who pitch a high percentage of fastballs may be at increased risk for UCL injury because pitching a higher percent of fastballs appears to be a risk factor for UCL reconstruction.