Clock face of acetabular labrum

The acetabular labrum is anatomically divided into four quadrants. The quadrants correspond to the regions around the acetabular rim, and are often referenced using the clock-face method:

• Anteroinferior quadrant of acetabular labrum: between 3 and 6 o’clock

• Anterosuperior quadrant of acetabular labrum:between12 and 3 o’clock

• Posteroinferior quadrant of acetabular labrum: between6 and 9 o’clock

• Posterosuperior quadrant of acetabular labrum: between 9 and 12 o’clock