1
.
| Erector spinae muscle (cut across) |
2
.
| Supraspinous ligament |
3
.
| Intertransverse ligament |
4
.
| Quadratus lumborum muscle (covered by middle layer of thoracolumbar fascia) |
5
.
| Left kidney (faintly visible through thoracolumbar and renal fascia) |
6
.
| Transverse process vertebrae L. IV |
7
.
| Latissimus dorsi muscle (cut edge) |
8
.
| Iliolumbar ligament |
9
.
| Iliac crest |
10
.
| Area of origin of gluteus medius muscle |
11
.
| Gluteus minimus muscle |
12
.
| Piriform muscle (cut across) |
13
.
| Sciatic nerve (emerging through greater sciatic foramen) |
14
.
| Upper pointer: Internal pudendal artery Lower pointer: Pudendal nerve |
15
.
| Obturator internus muscle (tendon of insertion) |
16
.
| Greater trochanter |
17
.
| Thoracolumbar fascia (posterior layer, reflected) |
18
.
| Intervertebral joint capsule L. IV-V |
19
.
| Middle sacral crest |
20
.
| Posterior superior iliac spine |
21
.
| Gluteus medius muscle |
22
.
| Dorsal sacroiliac ligament |
23
.
| Piriform muscle |
24
.
| Sacrotuberous ligament |
25
.
| Ischiorectal fossa |
26
.
| Superficial dorsal sacrococcygeal ligament |
27
.
| Coccyx |