Table 3. Patients in whom discrepancy existed between the surgical findings and the MDCT arthrogram.

Surgical findings	MDCT arthrogram findings
Badly frayed anterolateral labrum	Normal labrum
No impingement	Fibrocystic changes at femoral head and neck junction
Torn anterior labrum	Torn anterior labrum
Anterior cam lesion	Fibrocystic change
Very early acetabular chondral delamination	Normal femoral and acetabular cartilage
Anterolateral labral tear	Anterolateral labral tear
Mild acetabular cartilage loss	Well-preserved femoral and acetabular cartilage
Cam lesion	Cam lesion
Normal labrum	Intact labrum
Patchy femoral and acetabular cartilage loss	Anterior acetabular cartilage loss

MDCT, multidetector CT. Patients in whom discrepancy existed between the surgical (arthroscopic) and the MDCT arthrogram.