| Exploration of gluteal region and hip |
| Gluteus maximus in relation to lumbosacral spine, posterior view |
| The erector spinae muscle of the left side has been removed to reveal the lower lumbar vertebrae, the sacrum and the posterior part of the ilium, together with ligaments associated with these bones. The gluteal muscles have been retained. |
| 1
.
| Sacral bone | | 2
.
| Iliolumbar ligament | | 3
.
| Superior cluneal nerve | | 4
.
| Iliac crest | | 5
.
| Gluteus medius muscle | | 6
.
| Gluteus maximus muscle | | 7
.
| Greater trochanter (covered by aponeurosis of gluteus maximus) | | 8
.
| Inferior cluneal nerve | | 9
.
| Ischial tuberosity | | 10
.
| Inferior rectal artery | | 11
.
| External anal sphincter muscle | | 12
.
| Vertebral spinous process of L. V | | 13
.
| Thoracolumbar fascia | | 14
.
| Posterior superior iliac spine (covered by fibrous tissue) | | 15
.
| Medial cluneal nerve | | 16
.
| Sacral horn | | 17
.
| Coccyx bone | | 18
.
| Adipose body of ischiorectal fossa |
|
