PM Muscles Of The Thigh Oiai

Question 1

Compartments of the thigh

Answer 1

• Anterior compartment
• Medial compartment
• Posterior compartment

Question 2

Anterior compartment has:

Answer 2

• leg extensors (quadriceps)
• Hip flexors

Question 3

Medial compartment has:

Answer 3

• Hip adductors

Question 4

Posterior compartment has:

Answer 4

• Hamstrings
• leg flexors
• thigh flexors

Question 5

What is the Tensor Fascia Lata (TFL)

Answer 5

• Gluteal muscle
• Tensing it stabilizes the lower limb
• Gluteus max and TFL fuse with fascia lata

Question 6

What is the Iliotibial tract (IT band/tract)

Answer 6

A lateral thickening of fascia lata

Question 7

Muscles of the Anterior compartment

Answer 7

Superficial 5
- Iliopsoas
——->psoas major
——-> iliacus
- Sartorius
- Rectus femoris*
- Vastus Lateralis*
- Vastus Medialis*

Deep 1
- Vastus intermedius*

Question 8

Psoas Major OII

Answer 8

O: T12-L5 transverse process and bodies

I: lesser trochanter of the femur

I: femoral nerve

Question 9

Iliacus OII

Answer 9

O: iliac fossa

I: lesser trochanter of the femur

I: femoral nerve

Question 10

Iliopsoas (muscles iia)

Answer 10

Iliacus and psoas major

Insertion: lesser trochanter of the femur

Action: flexion of thigh @hip joint

Innervation: femoral nerve

Question 11

Sartorius (OIAI)

Answer 11

O: Anterior superior iliac spine (ASIS)

I: Superior medial aspect of the tibial shaft

A:
-thigh flexion @ hip joint
-leg flexion @knee joint

I: femoral nerve

Question 12

Actions of quadriceps femoris muscles

Answer 12

All: extend knee joint

*rectus femoris also flexes the thighs at the hip joint

Question 13

Rectus femoris OIAI

Answer 13

O: Anterior inferior iliac spine (AIIS)

I: quadriceps femoris tendon

A:
- flexes thigh at hip joint
- extends leg at knee joint

I: femoral nerve

Question 14

Vastus lateralis* and Vastus medialis

Answer 14

O: intertrochanteric line of femur

I:
- patella via quadriceps femoris tendon
*lateralis also at tibial tuberosity

Action: extend leg at knee joint

I: femoral nerve

Question 15

Vastus intermedius

Answer 15

O: anterior and lateral surfaces of femur

I: tibial tuberosity via tendon of quadriceps femoris and patellar ligament

A: extend leg at knee joint

I: femoral nerve

Question 16

Medial compartment of the thigh

Answer 16

Superficial 3
- Pectineus
- adductor longue
- gracilis

deep
- adductor brebis
- adductor Magnus

Innervation : interstitial nerve (except pectineus; is femoral nerve)

Question 17

Medial compartment of the thigh

Answer 17

Superficial 3
- Pectineus
- adductor longue
- gracilis

deep
- adductor brebis
- adductor Magnus

Innervation : interstitial nerve (except pectineus; is femoral nerve)

Question 18

Gracilis OIAI

Answer 18

O: ischiopubic ramus

I: medial surface of tibia

A:
- adduct thigh at hip
- flex leg at knee

I: obturator nerve

Question 19

Pectineus OIAI

Answer 19

O: Pectineal line of pubis

I: pectineal line of femur

A: adduct and flex thigh at hip

I: femoral nerve

Question 20

Adductor longus OIAI

Answer 20

O: pubis

I: linea aspera of the femur

A: adduct thigh at hip joint

I: obturator nerve

Question 21

Adductor Brevis OIAI

Answer 21

O: inferior pubic ramus and pubis

I: Linea aspera on the posterior surface of the femur

A: adduct thigh at hip joint

I: obturator nerve

Question 22

Adductor Magnus OIAI (2heads)

Answer 22

A: adduct thigh at hip joint
I: adductor tubercle and linea aspera

Adductor head
O: ischiopubic ramus
I: obturator n.

hamstring head
O: ischial tuberosity
I: sciatic nerve