Skeletal Radiology

, Volume 44, Issue 1, pp 73–76 | Cite as

Radiographic follow-up study of Little Leaguer’s shoulder

  • Yoshiji Kanematsu
  • Tetsuya MatsuuraEmail author
  • Shinji Kashiwaguchi
  • Takenobu Iwase
  • Naoto Suzue
  • Toshiyuki Iwame
  • Koichi Sairyo
Scientific Article



Little Leaguer’s shoulder is a syndrome involving the proximal humeral epiphyseal plate. Conservative treatment usually resolves the symptoms. However, there are no reports of a radiographic follow-up study of this disease. The purpose of this study was to show the radiographic healing process of Little Leaguer’s shoulder.

Materials and methods

A total of 19 male baseball players diagnosed as having Little Leaguer’s shoulder were retrospectively evaluated. The mean age at first presentation was 12.7 years. External rotation anteroposterior radiographs of the shoulder were taken. All patients were treated with rest from throwing, and no throwing was recommended until remodeling was confirmed. Follow-up radiographs were taken at 1-month intervals to assess healing. All patients were observed until healing was confirmed radiographically, after which they returned to baseball. The mean follow-up period was 8.5 months. In addition to radiography, patients were asked whether they had any symptoms and whether they had been able to return to baseball.


At the first examination, radiographs showed a wider epiphyseal plate of the throwing side compared with the asymptomatic contralateral shoulder. Healing was observed in all cases. Healing occurred first along the medial side and was then extended laterally. The mean time required for healing was 4.7 months. All patients were able to return to playing baseball at their pre-injury level of play and were asymptomatic when examined at the final follow-up.


The healing process of Little Leaguer’s shoulder advanced from medial to lateral, and healing was achieved about 5 months after initial examination.


Little Leaguer’s shoulder Radiographic follow-up study Baseball 


Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© ISS 2014

Authors and Affiliations

  • Yoshiji Kanematsu
    • 1
  • Tetsuya Matsuura
    • 2
    Email author
  • Shinji Kashiwaguchi
    • 3
  • Takenobu Iwase
    • 1
  • Naoto Suzue
    • 2
  • Toshiyuki Iwame
    • 4
  • Koichi Sairyo
    • 2
  1. 1.Department of Orthopaedic SurgeryTokushima National HospitalTokushimaJapan
  2. 2.Department of Orthopedics, Institute of Health BioscienceUniversity of Tokushima Graduate SchoolTokushimaJapan
  3. 3.Department of Orthopaedic SurgeryJapan Community Health Care Organization, Tokyo Shinjuku Medical CenterTokyoJapan
  4. 4.Department of Orthopaedic SurgeryTokushima Prefectural Central HospitalTokushimaJapan

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