O's and I's Lower Extremity Part 1 Flashcards
Gluteus Minimus Action
Abducts and medially rotates thigh
Gluteus Maximus Origin
- Outer rim of Ilium (medial aspect)
- Dorsal surface of sacrum and coccyx
- sacrotuberous ligament
Tensor Fascia Latae Origin
Anterior Superior Iliac Spine
Tensor Fascia Latae Action
- Abducts with hip in flexed position
2. Rotates and abducts a flexed thigh
Gluteus Maximus Action
- Extends the hip
- Laterally rotates the thigh
- Upper fibers aid to abduct thigh
Tensor Fascia Latae Insertion
IT band down to Gerdy’s Tubercle
Gluteus Medius Insertion
Superior aspect of greater trochanter
Gluteus Maximus Nerve
Inferior Gluteal Nerve
Gluteus Maximus Insertion
- Gluteal Tuberosity of Femur
2. IT band
Gluteus Minimus Origin
Outer aspect of Ilium between anterior and inferior gluteal lines
Gluteus Medius Nerve
Superior Gluteal Nerve
Gluteus Medius Origin
Outer aspect of Ilium between Iliac Crest and anterior and posterior gluteal lines
Tensor Fascia Latae Nerve
Superior Gluteal Nerve
Gluteus Minimus Nerve
Superior Gluteal Nerve
Gluteus Medius Action
- Abducts and medially rotates thigh
2. Functionally: stabilized pelvis and prevents free limb from sagging during gait
Gluteus Minimus Insertion
Greater Trochanter
Piriformis Origin
Anterior surface of Sacrum
Piriformis Insertion
Medial surface of Greater Trochanter (through greater sciatic foramen)
Piriformis Action
- Medially rotates the thigh when hip is flexed past 90 degrees
- Laterally rotates the thigh when his is flexed less than 90 degrees
Piriformis Nerve
Nerve to Piriformis
Superior Gemellus Origin
Ischial Spine
Superior Gemellus Insertion
tendon to Obturator Internus
Superior Gemellus Action
Laterally rotates thigh (femur)
Superior Gemellus Nerve
Nerve to Obturator Internus
Obturator Internus Origin
Internal surface of Obturator Foramen
Obturator Internus Insertion
Medial aspect of Greater Trochanter (through greater sciatic foramen)
Obturator Internus Action
Laterally rotates thigh (femur)
Obturator Internus Nerve
Nerve to Obturator Internus
Inferior Gemellus Origin
Ischial Tuberosity
Inferior Gemellus Insertion
Tendon of Obturator Internus
Inferior Gemellus Action
Laterally rotates thigh (femur)
Inferior Gemellus Nerve
Nerve to Quadratis Femoris
Obturator Externus Origin
External surface of Obturator membrane
Obturator Externus Insertion
Trochanteric Fossa of Femur
Obturator Externus Action
Laterally rotates thigh (femur)
Obturator Externus Nerve
Obturator
Quadratis Femoris Origin
Ischial Tuberosity
Quadratis Femoris Insertion
Quadrate Tubercle
Quadratis Femoris Action
Laterally rotates thigh (femur)
Quadratis Femoris Nerve
Nerve to Quadratis Femoris