Lower Limb OIAs Flashcards
Obturator externus origin
External margins of obturator foremen and obturator membrane
Obturator externus insertion
Trochanteric fossa of femur (lateral attachment)
Obturator externus action innervation
Laterally rotates the thigh
Obturator N
Gluteus Maximus origin
Ilium posterior to posterior gluteal line, dorsal surface of the sacrum and coccyx, and sacrotuberous ligament
Gluteus Maximus insertion
Iliotibial tract and gluteal tuberosity
Gluteus Maximus action and innervation
Extends and laterally rotates the thigh
Inferior gluteal N
Gluteus medius origin
External surface of ilium between anterior and posterior gluteal lines and gluteal fascia
Gluteus medius insertion
Lateral surface of greater trochanter of the femur
Gluteus medius actions and innervation
Abducts and medially rotates the thigh
Superior gluteal N
Gluteal minimis origin
Lateral surface of the ilium between the anterior gluteal and inferior gluteal lines
Gluteus minimus insertion
Anterior surface of greater trochanter of the femur
Gluteus minimis action and innervation
Abducts and medially rotates the thigh
Superior gluteal n.
Piriformis origin
Anterior surface of the sacrum
Piriformis insertion
Greater trochanter of the femur
Piriformis action
Laterally/ externally rotates the thigh