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Little league shoulder: case reports
Arthrosc Orthop Sports Med 2020;7:8-11
Published online May 1, 2020;
© 2020 Korean Arthroscopy Society and Korean Orthopedic Society for Sports Medicine.

Jin-Young Park1, Jae Hyung Lee1, Kyung-Soo Oh2, Seok Won Chung2, Dong-Wook Kim1

1Center for Shoulder, Elbow and Sports, Neon Orthopaedic Clinic, 2Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Korea
Correspondence to: Dong-Wook Kim,
Center for Shoulder, Elbow and Sports, Neon Orthopaedic Clinic, 8 Seolleung-ro 131-gil, Gangnam-gu, Seoul 06059, Korea. Tel: +82-2-540-3200, Fax: +82-2-540-2299, E-mail:
Received November 22, 2019; Revised January 30, 2020; Accepted January 31, 2020.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
As an increasing number of young people participate in sports such as baseball, cases of little league shoulder (LLS) are encountered more often. LLS is usually treated conservatively, and education and rehabilitation are important for helping young athletes prevent LLS. Metaphyseal sclerosis on imaging is useful for diagnosing patients’ condition. If metaphyseal sclerosis is present, LLS should be suspected; otherwise, a traumatic epiphyseal fracture should be considered. Banning throwing activity is crucial. We report treatment of LLS with metaphyseal sclerosis including rest, which facilitated a gradual return to sports.
Keywords : Little league shoulder; Baseball; Throwing activity; Metaphyseal sclerosis
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