Term
| What is the origin of the Gluteus Maximus Muscle? |
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Definition
| outer surface of ilium at posterior gluteal line, posterior surface of the sacrum and coccyx and from the sacrotuberous ligament |
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Term
| What is the insertion of the gluteus maximus muscle? |
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Definition
| iliotibial tract and some deep fibers at the gluteal tuberosity of femur |
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Term
| What is the nerve supply of the gluteus maximus muscle? |
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Definition
| inferior gluteal nerve (L5, S1-2) |
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Term
| What is the blood supply of gluteus maximus muscle? |
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Definition
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Term
| What is the action of the gluteus maximus muscle? |
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Definition
| extends and laterally rotates the thigh and assists in rising from a sitting position |
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Term
| What is the origin of the gluteus medius muscle? |
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Definition
| outer surface of the ilium, below the iliac crest, between the posterior gluteal and anterior gluteal lines |
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Term
| What is the insertion of the gluteus medius muscle? |
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Definition
| lateral surface of greater trochanter |
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Term
| What is the nerve supply of the gluteus medius muscle? |
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Definition
| superior gluteal nerve (L4-5, S1) |
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Term
| What is the action of the gluteus medius muscle? |
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Definition
| ABDUCTS the thigh, and medially rotates thigh (anterior fibers) and with gluteus minimus muscle it is important in walking and running and keeping a level pelvis |
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Term
| What is the blood supply of the gluteus medius muscle? |
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Definition
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Term
| What is the origin of the gluteus minimus muscle? |
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Definition
| outer surface of the ilium between anterior and inferior gluteal lines |
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Term
| What is the insertion of the gluteus minimus muscle? |
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Definition
| anterior surface of the greater trochanter |
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Term
| What is the nerve supply of the gluteus minimus muscle? |
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Definition
| superior gluteal nerve (L4-5, S1) |
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Term
| What is the action of the gluteus minimus muscle? |
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Definition
| abducts the thigh and anterior fibers medially rotate the thigh and helps to maintain a level pelvis |
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Term
| What is the origin of the tensor fasciae latae? |
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Definition
| outer edge of iliac crest and between ASIS and iliac tubercle |
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Term
| What is the insertion of the tensor fasciae latae muscle? |
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Definition
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Term
| What is the nerve supply of the tensor fasciae latae? |
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Definition
| superior gluteal nerve (L4-5, S1) |
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Term
| What is the action of the tensor fasciae latae? |
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Definition
| assists the gluteus maximus muscle in extending the knee joint and keeping the knee extended (can also flex and medially rotate the thigh) |
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Term
| Where does the piriformis muscle pass through? |
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Definition
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Term
| What is the origin of the piriformis muscle? |
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Definition
| anterior surface of 2nd, 3rd, and 4th sacral vertebrae within the pelvis |
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Term
| What is the insertion of the piriformis muscle? |
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Definition
| upper border of greater trochanter |
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Term
| What is the nerve supply of the piriformis muscle? |
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Definition
| ventral rami of S1-2 spinal nerves |
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Term
| What is the action of the piriformis muscle? |
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Definition
| laterally rotates the thigh at the hip joint |
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Term
| What is the origin of the superior gemellus muscle? |
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Definition
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Term
| What is the insertion of the superior gemellus muscle? |
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Definition
| obturator internus tendon, which inserts into the upper border of greater trochanter |
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Term
| What is the nerve supply to the superior gemellus muscle? |
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Definition
| nerve to the obturator internus (L5, S1-2) |
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Term
| What is the action of the superior gemellus? |
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Definition
| laterally rotates the thigh at the hip joint |
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Term
| What is the origin of the inferior gemellus? |
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Definition
| upper margin of the ischial tuberosity |
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Term
| What is the insertion of the inferor gemellus? |
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Definition
| obturator internus tendon, then to greater trochanter with superior gemellus muscle |
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Term
| What is the nerve supply of the inferior gemellus? |
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Definition
| nerve to the quadratus femoris (L4-5, S1) |
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Term
| What is the action of the inferior gemellus? |
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Definition
| laterally rotator of the thigh at the hip joint |
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Term
| What is the origin of the obturator internus muscle? |
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Definition
| pelvic surface of the obturator membrane and surrounding bones |
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Term
| What is the insertion of the obturator internus? |
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Definition
| upper border of greater trochanter with inferior and superior gemellus muscles |
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Term
| What is the nerve supply of the obturator internus? |
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Definition
| nerve to obturator internus muscle (L5, S1-2) |
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Term
| What is the action of the obturator internus? |
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Definition
| laterally rotates the thigh at the hip joint |
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Term
| What is the origin of the quadratus femoris? |
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Definition
| lalteral border of ischial tuberosity |
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Term
| What is the insertion of the quadratus femoris? |
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Definition
| intertrochanteric crest of the femur |
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Term
| What is the nerve supply of the quadratus femoris? |
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Definition
| nerve to quadratus femoris muscle (L4-5, S1) |
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Term
| What is the action of the quadratus femoris? |
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Definition
| laterally rotates the thigh at the hip joint |
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