title: Outcome of an elbow check-up system for child and adolescent baseball players.
abstract: OBJECTIVE
  Our aim was to examine the outcome of an elbow check-up system for youth baseball players. In particular, we investigated the nature of elbow injuries in youth baseball players with elbow pain and ultrasonographic findings of the capitellum.
  
  
  METHODS
  A total of 1605 players participating in the regional summer championship in July 2013 underwent a questionnaire survey, physical examination, ultrasound imaging, and radiographic examination.
  
  
  RESULTS
  A total of 499 (31.1%) players reported episodes of elbow pain, of whom 320 (64.1%) had abnormal findings on physical examination, and 115 (35.9%) agreed to undergo radiography. Among them, 98 (85.2%) exhibited radiographic abnormalities. On the initial ultrasonography screening, 60 (3.7%) players had an abnormal finding and 55 (91.7%) agreed to undergo radiography. Among them, 26 (47.3%) were found to have osteochondritis dissecans (OCD) of the capitellum on radiographs.
  
  
  CONCLUSIONS
  About 30% of youth baseball players had episodes of elbow pain, and 64.1% of players with elbow pain had abnormal findings on physical examination. Furthermore, 85.2% of subjects who underwent radiographic examination exhibited radiographic abnormalities. About 4% of young baseball players had an abnormal finding on initial ultrasonography screening, and nearly 50% of them had OCD of the capitellum on radiographs. J. Med. Invest. 63: 171-174, August, 2016.
authors.affiliation: Department of Orthopaedic Surgery, Tokushima Prefectural Central Hospital.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Iwame
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Matsuura
authors.forename: Naoto
authors.initials: N
authors.lastname: Suzue
authors.forename: Shinji
authors.initials: S
authors.lastname: Kashiwaguchi
authors.forename: Takenobu
authors.initials: T
authors.lastname: Iwase
authors.forename: Shoji
authors.initials: S
authors.lastname: Fukuta
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hamada
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Goto
authors.forename: Takahiko
authors.initials: T
authors.lastname: Tsutsui
authors.forename: Keizo
authors.initials: K
authors.lastname: Wada
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Egawa
authors.forename: Akihiro
authors.initials: A
authors.lastname: Nagamachi
authors.forename: Koichi
authors.initials: K
authors.lastname: Sairyo
mesh_terms: D001265:Athletic Injuries / Q000175:diagnosis*; D001484:Baseball; D002648:Child; D004550:Elbow / Q000000981:diagnostic imaging; D006801:Humans; D010008:Osteochondritis Dissecans / Q000175:diagnosis; D010146:Pain / Q000175:diagnosis; D010808:Physical Examination; D014463:Ultrasonography; D000092464:Elbow Injuries