Ant thigh

Question 1

What is the dermatome of the patellar tendon?

Answer 1

L4

Question 2

What dermatomes supply the posterior leg?

Answer 2

S1 laterally, S2 medially

Question 3

What dermatome supplies the skin over the inguinal ligament and mons pubis?

Answer 3

L1

Question 4

What does the external iliac a. pass to become the femoral a?

Answer 4

Inguinal ligament

Question 5

What is the 1st big branch from the femoral a?

Answer 5

Deep femoral a.

Question 6

What does the femoral a. turn into, and *where?

Answer 6

• Popliteal a.

- Adductor hiatus

Question 7

What vein drains the medial side of the leg?

Answer 7

Greater saphenous v.

Question 8

What vein drains the posterior side of the leg?

Answer 8

Lesser saphenous v.

Question 9

The sciatic n. primarily supplies the ______________ thigh, the femoral n. primarily supplies the ______________ thigh, and the obturator n. primarily supplies the ______________ thigh.

Answer 9

• Posterior
• Anterior
• Medial

Question 10

What mm. are part of the quadriceps group?

Answer 10

• Rectus femoris
• Vastus medialis
• Vastus lateralis
• Vastus intermedius

Question 11

Which of the quadriceps femoris mm. can act as a hip flexor, in addition to a leg extender?

Answer 11

Rectus femoris (crosses hip joint)

Question 12

Rectus femoris m: OIIA?

Answer 12

O: Ilium
I: Patella/patellar tendon

I: Femoral n.
A: Flexes hip, extends leg

Question 13

Vastus medialis m: OIIA?

Answer 13

O: Superior, anterior, medial femur
I: Patella area

I: Femoral n.
A: Extends leg

Question 14

Vastus intermedius m: OIIA?

Answer 14

O: Superior, anterior, midline femur
I: Patellar area

I: Femoral n.
A: Extends leg

Question 15

Vastus lateralis m: OIIA?

Answer 15

O: Superior, anterior, lateral femur
I: Patellar area

I: Femoral n.
A: Extends leg

Question 16

Sartorius m: OIIA?

Answer 16

O: Ant sup iliac spine (lateral thigh)
I: Upper medial tibial shaft (medial leg)

I: Femoral n.
A: Flexes, adducts, laterally rotates leg at thigh. Flexes, medially rotates leg at knee.

Question 17

What mm. make up the pes anserinus?

Why are they grouped together?

Answer 17

• Sartorius, gracilis, and semitendinosus mm.

- All insert at the medial superior tibia like a “goose foot”

Question 18

Gracilis m: OIIA?

Answer 18

O: Ischiopubic ramus
I: Upper medial shaft of tibia

I: Obturator n.
A: Adducts hip, flexes leg and medially rotates flexed leg

Question 19

Adductor longus m: OIIA?

Answer 19

O: Pubis (tubercle)
I: Lower linea aspera

I: Obturator n.
A: Adducts, medially rotates hip

Question 20

Adductor brevis m: OIIA?

Answer 20

O: Pubis
I: Upper 1/3 of linea aspera

I: Obturator n.
A: Adducts hip

Question 21

Adductor magnus m, hamstring part: OIIA?

Answer 21

O: Ischial tuberosity
I: Lower gluteal line and linea aspera

I: Sciatic n., tibial division
A: Extends hip

Question 22

Adductor magnus m, adductor part: OIIA?

Answer 22

O: Ischiopubic ramis
I: Adductor tubercle

I: Obturator n.
A: Adducts and medially rotates hip

Question 23

Pectineus m: OIIA?

Answer 23

O: Pectineal line of pubis
I: Below lesser trochanter

I: Femoral n, sometimes obturator n.
A: Flexes, adducts, medially rotates hip

Question 24

Obturator externus m: OIIA?

Answer 24

O: Outer obturator membrane
I: Greater trochanter

I: Obturator n.
A: Laterally rotates hip

Question 25

What are the 3 adductor mm., superficial to deep?

Answer 25

Longus, brevis, magnus

Question 26

What are the boundaries of the femoral triangle?

Answer 26

- Inguinal ligament superiorly - Medial edge of adductor longus m. medially - Laterally by the sartorius m.

Question 27

What important structures lie w/in the femoral triangle?

Answer 27

NAVL - Femoral n. - Femoral a. - Femoral v. - Deep inguinal lymph nodes

Question 28

What mm. comprise the floor of the femoral triangle?

Answer 28

Iliopsoas, pectineus, (and adductor longus) mm.

Question 29

Which aa. pierce the adductor magnus before continuing to the hamstrings? What are they a branch of?

Answer 29

- Perforating aa. | - Profunda femoris a.

Question 30

What 8 mm. (roughly) contribute to hip flexion?

Answer 30

- Iliopsoas m. - Sartorius m. - Tensor fascia lata m. - Pectineus m. - Adductor magnus, longus, brevis mm. - Gracilis m.

Question 31

What 6 mm. (roughly) contribute to hip adduction?

Answer 31

- Adductor magnus, longus, brevis mm. - Gracilis m. - Pectineus m. - Obturator externus m.

Question 32

What 7 mm. (roughly) contribute to lateral rotation of the hip?

Answer 32

- Obturator internus/externus mm. - Superior/inferior gamelli mm. - Piriformis m. - Quadratus femoris m. - Gluteus maximus m.

Question 33

What 5 mm. (roughly) contribute to extension of the hip?

Answer 33

- The 3 hamgstring mm. - Adductor magnus m. - Gluteus maximus m.

Question 34

What 3 mm. (roughly) contribute to hip abduction?

Answer 34

- Gluteus minimus m. - Gluteus medius m. - Tensor fascia lata m.

Question 35

What 3 mm. (roughly) contribute to medial rotation of the hip?

Answer 35

- Gluteus minimus m. - Gluteus medius m. - Tensor fascia lata m.

Question 36

Articularis genu: OIIA?

Answer 36

O: Distal anterior femur I: Apex of suprapatellar bursa, just below it I: Femoral n. A: Pulls suprapatellar bursa superiorly w/extension of knee