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Flashcards in Upper Leg Deck (24):
1

Psoas Major:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Sides of T12-L5 vertabrae and discs between them; transverse processes of all lumbar vertabrae

2. Lesser trochanter of femur

3. Anterior rami of lumbar nerves (L1 - L3)

4. Flexes and stabilizes hip alongside Iliacus

2

Iliacus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Iliac crest, iliac fossa, ala of sacrum and anterior sacroiliac ligaments

2. Tendon of psoas major, lesser trochanter, and femur distal to it

3. Femoral Nerve (L2, L3)

4. Flexes and stabilizes hip alongside Psoas major

3

Tensor Fascia Lata:

1. Origin

2. Insertion

3. Innervation

4. Action

 

1. ASIS and superior part of notch inferior to it

2. IT Band that attaches to lateral condyle of tibia

3. Superior Gluteal (L4, L5)

4. Abducts, flexes, and internally rotates hip; helps to keep knee extended; steadies trunk on thigh

 

4

Sartorius:

1. Origin

2. Insertion

3. Innervation

4. Action

1. ASIS and superior part of notch inferior to it

2. Superior part of medial surface of tibia

3. Femoral Nerve (L2, L3)

4. Flexes, abducts, externally rotates hip; flexes knee

 

5

Rectus Femoris: 

1. Origin

2. Insertion

3. Innervation

4. Action

1. AIIS and ilim superior to acetabulum

2. Tibial tuberosity

3. Femoral Nerve (L2-L4)

4. Extends knee; stabilizes and flexes hip

6

Vastus Lateralis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Greater trochanter and lateral lip of linea aspera of femur

2. Tibial Tuberosity

3. Femoral Nerve (L2-L4)

4. Extends knee

7

Vastus Medialis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Intertochanteric line and medial lip of linea aspera of femur

2. Tibial Tuberosity

3. Femoral Nerve (L2-L4) 

4. Extends knee

8

Vastus Intermedius:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Anterior and lateral surfaces of body of femur

2. Tibial Tuberosity

3. Femoral Nerve (L2-L4)

4. Extends knee

9

Pectineus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Superior ramus of pubis

2. Pectineal line of femur, just inferior to lesser trochanter

3. Femoral Nerve (L2,L3)

4. Adducts and flexes hip; assists internal rotation

10

Adductor Longus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Body of pubis inferior to pubic crest

2. Middle third of linea aspera of femur

3. Obturator Nerve, anterior branch (L2-L4)

4. Hip Adduction

 

11

Adductor Brevis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Body and inferior ramus of pubis

2. Pectineal line and proximal part of linea aspera of femur

3. Obturator Nerve (L2-L4)

4. Hip adduction and to some extent, flexes it

12

Adductor Magnus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Inferior ramus of pubis, ramus of ischium and ischial tuberosity

2. Gluteal tuberosity, linea aspera, medial supracondylar line (adductor part) and adductor tubercle of femur (hamstring part)

3. Obturator Nerve (L2-L4) (adductor); Tibial Part of Sciatic Nerve (L4) (hamstring) 

4. Adducts and flexes hip (adductor); extends hip (hamstring)

13

Gracilis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Body of and inferior ramus of pubis

2. Superior part of medial surface of tibia

3. Obturator Nerve (L2 and L3)

4. Adducts, flexes and internally rotates hip

 

14

Obturator Externus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Margins of obturator foramen and obturator membrane

2. Trochanteric fossa of femur

3. Obturator nerve (L3 and L4)

4. External rotation of hip; steadies head of femur in acetabulum

15

Gluteus Maximus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, and sacrotuberous ligament

2. Most fibers end in IT band that inserts into lateral condyle of tibia; some fiberts insert on gluteal tubertosity of femur

3. Inferior Gluteal Nerve (S1 and S2)

4. Extension and external rotation of hip; stabilizes pelvis; assists in raising trunk from flexed position

16

Gluteus Medius:

1. Origin

2. Insertion

3. Innervation

4. Action

1. External surface of ilium between anterior and posterior gluteal lines

2. Lateral surface of greater trochanter of femur

3. Superior Gluteal Nerve (L5 and S1)

4. Abduction, internal rotation of hip; stabilizes pelvis when contralateral leg is raised

17

Gluteus Minimis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. External surface of ilium between anterior and inferior gluteal lines

2. Anterior surface of greater trochanter of femur

3. Superior Gluteal Nerve (L5 and S1) 

4. Abduction and internal rotation of hip; stabilizes pelvis when contralateral leg is raised

18

Piriformis:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Anterior surface of sacrum and sacrotuberous ligament

2. Superior border of greater trochanter of femur

3. Branches of anterior rami of S1 and S2

4. External rotation of hip; abduction when hip is flexed

 

19

Obturator Internus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Pelvis surface of obturator membrane and surrounding bones

2. Medial surface of greater trochanter of femur

3. Nerve to obturator internus (L5 and S1)

4. External rotation of hip; abduction when hip is flexed; stabilizes femoral head in acetabulum

20

Superior and Inferior Gemelli:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Superior: Ischial Spine; Inferior: Ischial Tuberosity

2. Medial surface of greater trochanter of femur

3. Superior: Nerve to obturator internus; inferior: nerve to quadratus femoris

4. External rotation of hip; abduction of flexed hip; stabilizes femoral head in acetabulum

21

Quadratus Femoris:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Lateral border of ischial tuberosity

2. Quadrate tubercle on intertrochanteric crest of femur and inferior to it

3. Nerve to quadratus femoris (L5 and S1)

4. External rotation of hip; stabilizes femoral head in acetabulum

22

Semitendinosus:

1. Origin

2. Insertion

3. Innervation

4. Action

 

1. Ischial tuberosity

2. Pes Anserine

3. Tibital division of Sciatic Nerve (L5-S2)

4. Extension and internal rotation of hip; knee flexion

23

Semimembranosus:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Ischial tuberosity

2. Posterior part of medial condyle of tibia

3. Tibial division of sciatic nerve (L5-S2)

4. Exention and internal rotation of hip; knee flexion

24

Biceps Femoris:

1. Origin

2. Insertion

3. Innervation

4. Action

1. Long head: ischial tubrosity; Short head: linea aspera and lateral supracondylar line of femur

2. Lateral side of head of fibula

3. Long Head; tibial division of sciatic nerve (L5-S2); Short Head: common peroneal division of sciatic nerve (L5-S2)