Fig. 12.
Normal facets. Graphic illustration (A), short-axis US image (B) and axial T1-weighted MR image (C) show normal facets. The anterior (yellow dotted outline) and lateral (light blue dotted outline) facets are demarcated by a sharp bony angulation (*) while the contour between the lateral and posterior (red dotted outline in B and C) curves more gently. The gluteus minimus tendon (arrowheads in B and C) attaches to the anterior facet, while the gluteus medius tendon (arrows in B and C) to the lateral and superoposterior facets. Intervening bursae are also shown (Gmed-t – gluteus medius tendon; Gmed- m – gluteus medius muscle; Gmin-t – gluteus minimus tendon; Gmin-m – gluteus minimus muscle; Gmax – gluteus maximus muscle; TB – trochanteric bursa; Gmed-b – subgluteus medius bursa; Gmin-b – subgluteus minimus bursa; Gmax – gluteus maximus muscle)