Answers
- Boundaries:
Superior - level of iliac crest
Inferiorly - gluteal folds
The Gluteal region
Laterally - greater trochanter
- bound to sacrum by the sacrospinous and sacrotuberous
ligament
- Originate off external surface of sacrum, ilium
- Produce extension, abduction, medial rotation
Superficial muscle layer of gluteal region - Glute max/med/min, tensor fascia lata
Insertion of gluteus maximus INSERTION: gluteal tuberosity, ITB
- thickest muscle of the body
- Common site for intramuscular injections; "safe region"
found laterally, void of neurovascular structures
- ORIGIN: lateral to the sacrum, medial aspect of ileum
origin of gluteus maximus medial, and sacrotuberous ligament
ACTION: forceful extension, lateral rotation of thigh
Action of gluteus maximus *greater use in flexed hip position (sit to stand, climbing
stairs)
INNERVATION: inferior gluteal nerve
Innervation/supply of gluteus maximus
SUPPLY: superior/inferior gluteal arteries
, Origin of gluteus medius
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