Hip pain

Did you know?

studies have shown that 1 in 4 people have a hip abnormality called FAI.

FAI has been linked to be one of the major causes of hip osteoarthritis

Femoroacetabular Impingement - FAI

by Phong Tran

What is Femoroacetabular Impingement?

The hip joint is a type of ball and socket joint which is made of the the femoral head (the top of the thigh bone which is shaped like a ball) and the acetabulum (part of the pelvis which forms a socket for the ball to sit in).  cam impingement - hip arthroscopy melbourne, victoria, australia

Femoroacetabular Impingement (also shorted to FAI) occurs when either the ball or the socket are abnormally formed.

This results in the ball and socket rubbing abnormally against each other. This causes the hip joint to wear out, causing damage to structures that are important to the proper function of the hip such as:

FAI is a common condition, affecting 25% of people and is one of the most common causes of hip arthritis.

There are 2 types of FAI.

  • CAM impingement. The bone abnormality is located on the ball.
  • PINCER impingement. The bone abnormality is located on the socket.

femoroacetabular impingement - FAI - hip arthrosscopy melbourne fai - femoroacetabular impingement


2 January, 2014