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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

MeasurementsType of FAINumber of patientsPercentage
Alpha angle > 55 and acetabular depth is negativeCam type2271%
Alpha angle < 55 and acetabular depth is positivePincer type39.7%
Alpha angle > 55 and positive acetabular depthMixed619.3%
Total 31