(AKA: Femoral Acetabular Impingement)
What is it?
Femoroacetabular Impingement FAI is a condition resulting from abnormal
pressure and friction between the ball and socket of the hip joint resulting in
pain and progressive hip dysfunction. This when left untreated leads to the
development of secondary osteoarthritis of the hip.
Femoroacetabular Impingement is a well described
pathologic condition that has been associated with
predisposing factors including slipped capital
femoral epiphysis, abnormal extension of the femoral
head epiphysis, and acetabular retroversion.
Impingement can occur as a result of femoral sided
impingement (Cam impingement), acetabular rim
impingement (pincer impingement), or a combination
of both which is the case in the majority of
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