Lab List Monday (and some Wednesday) 6/16/14 Flashcards
Gluteus Maximus Insertions (2)
- iliotibial tract (inserting on lateral epicondyle of humerus)
- gluteal tuberosity of femur
Gluteus Maximus Origins (4)
- Ilium posterior to posterior gluteal line
- sacrum (dorsal surface)
- coccyx (dorsal surface)
- SACROTUBEROUS LIGAMENT
Gluteus Maximus Innervation
Inferior Gluteal Nerve (L5, S1, S2)
Gluteus Maximus Main Actions (4)
- extends hip joint between flexed and standing positions
- assists lateral rotation
- steadies thigh
- assists in rising from seated position
Gluteus Medius and Gluteus Minimus Origin
Medius: External surface of ilium (between anterior and posterior gluteal lines)
Minimus: External surface of ilium (between anterior and inferior gluteal lines)
Gluteus Medius Insertion
Lateral surface of greater trochanter of the femur
Gluteus Medius, Gluteus Minimus, and Tensor Fasciae Latae are all innervated by:
Superior Gluteal Nerve (L4, L5, S1)
Gluteus Medius and Gluteus Minimus Main Actions (2)
- abduct and medially rotate the hip joint
- keep pelvis level when opposite limb is elevated
Gluteus Minimus Insertion
Anterior surface of greater trochanter of femur
Tensor Fasciae Latae Origins (2)
- Anterior superior iliac spine
- Anterior part of iliac crest
Tensor Fasciae Latae Insertion
Iliotibial tract (which attaches to lateral epicondyle of the tibia (Gerdy Tubercle)
Tensor Fasciae Latae Main Actions (2)
- flexes hip joint
- acts with gluteus maximus to stabilize the extended knee joint
Piriformis Origins (3)
- 2nd-4th sacral segments (anterior surface of)
- greater sciatic notch (superior margin of)
- SACROTUBEROUS LIGAMENT
Piriformis Insertion
Greater trochanter of femur (superior border)
Piriformis Innervation
Branches of superior rami of S1, S2
Piriformis, Obturator Internus, Superior and Inferior Gemelli Main Actions (3)
- laterally rotate extended hip joint
- abduct flexed hip joint
- steady femoral head in acetabulum (stabilizes hip joint)
Obturator Internus Origins (3)
- Ilium (pelvic surface of)
- Ischium (pelvic surface of)
- Obturator membrane
Obturator internus and superior and inferior gemelli insertion
trochanteric fossa of femur (medial surface of greater trochanter)
Obturator internus innervation
nerve to obturator internus (L5, S1)
Superior and inferior gemelli Origins (2)
- Superior: ischial spine
- Inferior: Ischial tuberosity
Superior and inferior gemelli innervation (2)
- Superior: nerve to obturator internus (L5, S1)
- Inferior: nerve to quadratus femoris (L5, S1)
Quadratus Femoris insertion
Quadrate tubercle on intertrochanteric crest of femur
Quadratus femoris origin
lateral border of ischial tuberosity
Quadratus femoris innervation
nerve to quadratus femoris (L5, S1)