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Clin Shoulder Elbow > Volume 19(1); 2016 > Article
Clinics in Shoulder and Elbow 2016;19(1):15-19.
DOI: https://doi.org/10.5397/cise.2016.19.1.15    Published online March 31, 2016.
Shoulder and Elbow Injury Rates and Patterns in Korean Rookie Professional Baseball Pitchers
Jin Young Park, Seung Jun Lee, Yong Il Kim, Gu Yeon Heo
1Global Center for Shoulder, Elbow & Sports at Neon Orthopaedic Clinic, Seoul, Korea.
2Department of Orthopaedic Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea. ninanojune@naver.com
3LG Twins Baseball Club, Seoul, Korea.
4Baseball Development Executive Committee, Korea Baseball Organization, Seoul, Korea.
Received: 21 May 2015   • Revised: 12 July 2015   • Accepted: 21 October 2015
Abstract
BACKGROUND: To investigate how many rookie pitchers suffered from injuries while playing in the amateur league without guidelines for prevention of excessive pitching, we analyzed their amateur pitching patterns based on the pitch count, use of breaking balls, and pitches during winter camp.
METHODS
Forty-one rookie pitchers who graduated from high school or university in 2013 and joined professional baseball teams. Participants were interviewed by a trainer using our questionnaire. Injury inclusion criteria were 1) history of shoulder surgery, 2) history of elbow surgery, 3) shoulder pain requiring treatment, and 4) elbow pain requiring treatment.
RESULTS
Mean number of pitches per game and warm-up pitches for practice was 84.5 pitches (range, 15 to 130 pitches) and 16.4 pitches (range, 2 to 210 pitches), respectively. Mean number of pitches during the last year was 906.9 (range, 80 to 2,000). Mean number of maximal pitches was 127 pitches (range, 50 to 210 pitches). Fourteen pitchers had pitched over 150 pitches. Twenty-seven pitchers (65.9%) had pitched in spite of enduring pain. During winter training (mean 1.8 months), mean number of pitches per day was 162.5 pitches, and 20 pitchers (48.8%) had practiced pitching excessively despite the cold weather. Twenty-six rookies (63.4%) had shoulder pain or history of shoulder surgery, and 31 pitchers (75.6%) had elbow pain or history of elbow surgery. Only four participants (9.8%) did not have pain and history of surgery.
CONCLUSIONS
For young baseball pitchers, guidelines for prevention of excessive pitching and for regulating the winter training program may be needed.
Key Words: Pitch count; Winter camp; Youth pitcher; Guideline
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