title: Descriptive Epidemiology of Symptomatic Femoroacetabular Impingement in Young Athlete: Single Center Study.
abstract: OBJECTIVE
  The purpose of this study was to determine the prevalence of symptomatic femoroacetabular impingement (FAI) in athletic patients.
  
  
  METHODS
  From July 2003 to May 2013, 388 patients (422 hips) who underwent arthroscopic surgery for FAI were evaluated demographic characteristics. The patients' age, gender, diagnosis, and type of sports were analyzed using medical records and radiography.
  
  
  RESULTS
  Among 422 hips in 388 patients, 156 hips were involved with sports. Among the 156 hips, 86, 43, and 27 hips were categorized as cam, pincer, and mixed type, respectively. Types of sports were soccer, baseball and taekwondo which showed 44, 36 and 35 hips, respectively. Also, cases related to sports according to age were 63 hips for twenties and 12 hips for teenagers in which the two showed highest association to FAI. The kinds of sports that showed high association were 28 hips of soccer and 20 cases of martial arts such as taekwondo and judo for twenties and 9 hips of martial arts for teenagers which was the highest.
  
  
  CONCLUSIONS
  FAI usually occurs in young adults and is highly related to sports activity. Most of the FAI type related to sports activity was cam type, and soccer and martial arts such as taekwondo were the most common cause of it.
authors.affiliation: Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Woo-Yong
authors.initials: WY
authors.lastname: Lee
authors.affiliation: Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Chan
authors.initials: C
authors.lastname: Kang
authors.affiliation: Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Deuk-Soo
authors.initials: DS
authors.lastname: Hwang
authors.affiliation: Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Je-Hyung
authors.initials: JH
authors.lastname: Jeon
authors.affiliation: Department of Orthopedic Surgery, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Long
authors.initials: L
authors.lastname: Zheng
keywords: Arthroscopy; Femoroacetabular impingement; Hip; Prevalence; Sports