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The Journal of Bone and Joint Surgery 80:892-7 (1998)
© 1998 The Journal of Bone and Joint Surgery, Inc.

Early Detection of Osteochondritis Dissecans of the Capitellum in Young Baseball Players. Report of Three Cases*

MASATOSHI TAKAHARA, M.D.{dagger}, MOTOYUKI SHUNDO, M.D.{ddagger}, MAKOTO KONDO, M.D.{ddagger}, KATSUNORI SUZUKI, M.D.{ddagger}, TOSHIKAZU NAMBU, M.D.{ddagger} and TOSHIHIKO OGINO, M.D.{dagger}, SAPPORO, JAPAN

Investigation performed at the Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Sapporo City


   Introduction
 
The prevalence of osteochondritis dissecans is high among individuals who have played baseball actively since childhood1,19, and repetitive throwing is considered to be one of the main etiological factors of this disease1,4,5,10,25. During the acceleration phase of throwing, the elbow joint may be stressed into a valgus position17,38,47,49 and the capitellum may be subjected to compression and shear forces4,20,21,44,48,50. However, little is known about the primary changes leading to osteochondritis dissecans. We attempted to detect these changes by examining the elbows of players on youth baseball teams with magnetic resonance imaging and ultrasonography. Forty-four young baseball players who were ten to twelve years old and had not had a previous examination of the elbow were selected for this study.

Magnetic resonance imaging was performed with a 1.5-tesla magnet (Magnetom H15; Siemens Medical Systems, Erlangen, Germany), and coronal and sagittal T1-weighted spin-echo images and sagittal T2-weighted gradient-echo images . . . [Full Text of this Article]


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