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Table 2 Types of FAI in the study according to alpha angle and acetabular depth measurements

From: Magnetic Resonance Arthrography, a valuable pre-operative imaging modality in femoro-acetabular impingement

Measurements

Type of FAI

Number of patients

Percentage

Alpha angle > 55 and acetabular depth is negative

Cam type

22

71%

Alpha angle < 55 and acetabular depth is positive

Pincer type

3

9.7%

Alpha angle > 55 and positive acetabular depth

Mixed

6

19.3%

Total

 

31