ABSTRACT

　 Introduction: In Japanese youth baseball, the biggest problem is pitching abuse, that is, the elbow is considerably damaged by the baseball elbow. Therefore, we created an ultra-compact in-vehicle MRI and started field-type baseball elobow examination. The main purpose is to detect the outer baseball elbow at an early stage, and to elucidate the pathophysiology of the outer baseball elbow based on the results and the results of pitching motion analysis.
　Method: Elbow joint MRI of 151 baseball players was taken in the baseball field. Ultrasound and pitching videos were taken and motion analysis was performed.
　Results: No significant results were observed because the number of subjects was still small, but MRI baseball elbow examination tended to detect the lateral baseball eblow at an early stage. It is difficult to mention whether there is a relationship between the pitching motion and the examination result.
　Discussion and conclusion: The size and distribution stage of the initial image of OCD were slightly different from what was supposed to be the main cause of the outer baseball elbow. It is considered that the cause of the onset of the outer baseball elbow may be clarified in the future by conducting thie examination with the same team every year.

DECENTE SPORTS SCIENCE Vol.43/The DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE