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An in-depth analysis of the anatomy of the gluteal region, including the bony framework, muscles, and innervations. It covers the origins, insertions, and actions of the gluteus maximus, tensor fasciae latae, gluteus medius, piriformis, obturator internus, and other muscles. It also discusses the structures under the cover of the gluteus maximus and the functions of the superior and inferior gluteal nerves.
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Typology: Exams
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Gluteal Aponeurosis
Intermediate layer
Gluteus Maximus Origins : posterior end of the iliac crest, posterior surface of the sacrum, coccyx and sacrotuberous ligament. Insertions : ilio-tibial tract( 3/4)and gluteal tuberosity.(1/4 ) Innervation: inferior gluteal nerve - [ Ventral rami of L5, S1,2] - emerges below the piriformis muscle to penetrate the deep surface of the gluteus maximus with accompanying vessels.
Actions
Structures under cover of gluteus maximus
GLUTEUS MEDIUS Covered partially by Gluteus maximus Origins: dorsal surface of the ilium between the anterior and posterior gluteal lines and from the gluteal aponeurosis. Insertion: lateral surface of the greater trochanter on an oblique ridge.
GLUTEUS MINIMUS Covered completely by Gluteus medius. Origins: gluteal surface of the ilium between the anterior and inferior gluteal lines upto margin of greater sciatic notch. Insertion: lateral part of anterior surface of the greater trochanter.