We performed medical checks of baseball injuries of the shoulder joint on junior and senior high school students in Kochi prefecture during 1997 and 1998.
Materials and methods: 116 junior high school baseball players and 76 high school players were investigated by means of a questionnaire and physical examination in 1997.105 junior and 95 high school baseball players were in 1998. Results: The positive findings (tenderness and limited R. O. M of the shoulder joint) were revealed in 34.5% of the junior high school baseball players and 35.5% of the high school baseball players in 1997.30.4% of the junior and 24.2% of the high school baseball players in 1998. Almost 30% of the junior and high school baseball players showed a painful condition and overused states of their shoulder joint.
Discussion: Our results suggest that an early search for shoulder injuries in young baseball players is useful for treating throwing injuries of the shoulder joint.
