title: Avulsion fracture of anterior inferior iliac spine complicated by hypertrophic malunion causing femoroacetabular impingement: Case report.
abstract: BACKGROUND
  Avulsion fractures of the anterior inferior iliac spine are uncommon and such injuries are caused by the sudden forceful contraction of the straight head of rectus femoris muscle while the hip is hyperextended and the knee is flexed.
  
  
  METHODS
  This case report describes the condition of 17 year old male footballer who complained of pain in the right groin for duration of 2 years after being involved in forceful sport activity. Detailed history, clinical examination, X-rays and CT scan revealed hypertrophic malunion of avulsion fracture of anterior inferior iliac spine causing an extra-articular type of femoroacetabular impingement. The patient was surgically treated when conservative management was unsuccessful.
  
  
  CONCLUSIONS
  This is the first case of hypertrophic malunion of avulsion fracture of anterior inferior iliac spine with femoroacetabular impingement that has been recognized in Qatar. The patient was surgically treated in order to relieve symptoms and avoid osteoarthritis.
  
  
  CONCLUSIONS
  Malunited avulsion fracture of anterior inferior iliac spine can cause extra-articular femoroacetabular impingement.
authors.affiliation: Orthopedic Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. Electronic address: ghaliboudah@yahoo.com.
authors.forename: Ghalib Ahmed
authors.initials: GA
authors.lastname: Alhaneedi
authors.affiliation: Orthopedic Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. Electronic address: abdullahsaad21@gmail.com.
authors.forename: Abdullah Saad A
authors.initials: ASA
authors.lastname: Abdullah
authors.affiliation: Orthopedic Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. Electronic address: ims2311@rediffmail.com.
authors.forename: Syed Imran
authors.initials: SI
authors.lastname: Ghouri
authors.affiliation: Orthopedic Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. Electronic address: yousefabuodeh@yahoo.com.
authors.forename: Yousef
authors.initials: Y
authors.lastname: Abuodeh
authors.affiliation: Orthopedic Department, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. Electronic address: maldosari1@hmc.org.qa.
authors.forename: Mohammed M Al Ateeq
authors.initials: MMAA
authors.lastname: Al Dosari
keywords: Anterior inferior iliac spine; Avulsion fracture; Extra-articular hip impingement; Femoroacetabular impingement