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Exploration of gluteal region and hip

Gluteus medius and piriformis muscles; sciatic nerve, left posterolateral view

For permissions information regarding the use of these images, please contact Drew Bourn at dbourn@stanford.edu

Image #180-2
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Exploration of gluteal region and hip
Gluteus medius and piriformis muscles; sciatic nerve, left posterolateral view
The aponeurosis covering the anterior part of the gluteus medius has been reflected anteriorly. The gluteus maximus has been cut off close to its origins to demonstrate the underlying bony landmarks and ligaments in relation to the remaining muscles.
1 . Iliac crest
2 . Gluteus medius muscle
3 . Aponeurosis overlying gluteus medius (reflected)
4 . Upper pointer: Obturator internus muscle (tendon) Lower pointer: Quadratus femoris muscle
5 . Gluteus maximus muscle (reflected)
6 . Trochanteric bursa of gluteus maximus
7 . Sciatic nerve
8 . Area of origin of Gluteus maximus muscle on ilium
9 . Posterior superior iliac spine
10 . Median sacral crest
11 . Dorsal sacroiliac ligament
12 . Superficial branch of superior gluteal artery
13 . Medial cluneal nerve
14 . Coccyx bone
15 . Upper pointer: Inferior gluteal artery Lower pointer: Inferior gluteal nerve
16 . Piriform muscle
17 . Sacrotuberous ligament
18 . Ischial tuberosity