Objective: the aim of this article was to assess the statistical date reported in the literature regarding femoracetabular impingement.

Introduction: Femoroacetabular impingement (FAI) is a morphological disorder of the hip joint. A variety of abnormalities of the bony acetabulum and/or femur combined with terminal and rigorous hip motion can lead to repetitive collisions that damage the soft tissue structures at the acetabular rim.

Method:To this end, we searched the current literature for relevant studies, without over employing a specific methodological criterion for identifying and analyzing the literature (this article is not a systematic review).

Results: Internal rotation angles were higher in cases that did not report hip pain and in those with a negative impingement test result. Alpha angle was increased in cases that reported pain, those with an internal rotation angle <20°, or cases with a positive impingement test.

Conclusion: The hip pain, impingement test results, and internal rotation angle seem to be associated with alpha angle of the hip measured on MRI in hip probably impingement patients.