Femoroacetabular impingement (FAI)

Femoroacetabular impingement (FAI) is a condition in which extra bone develops along one or both of the bones that form the hip joint.  Because they do not fit together perfectly, the bones rub against each other during movement. Over time this friction can damage the joint, causing pain and limiting activity.


The most common symptoms of FAI include:

  • Pain
  • Stiffness
  • Limping
  • Clicking/catching

Pain often occurs in the groin area, although it may occur toward the outside of the hip. 


FAI occurs because the hip bones do not form normally during the childhood growing years.  It may be caused by repetitive overuse during adolescence, due to chronic growth plate irritation causing abnormal bone growth around the hip. 



  • Physiotherapy
  • Non-steroidal anti-inflammatory medications
  • Activity Changes


  • Arthroscopy
  • Open FAI Surgery
  • Total Hip Replacement