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Flashcards in The Thigh Deck (17):
0

What does the adductor magnus do?

Adducts the thigh
Adductor part: flexes the thigh
Hamstring part: extends the thigh

1

How is the adductor magnus innervated?

Adductor part: obturator nerve
Hamstring part: tibial part of the sciatic nerve

2

What does the Gracilis do?

Adducts the thigh
Flexes the leg
Helps rotate the leg medially

3

What does the obturator externus do?

Laterally rotates the thigh and steadies the head of the femur in the acetabulum

4

Which five muscles make up the hip-joint flexors group?

Pectineus
Psoas major
Psoas minor
Iliacus
Sartorius

6

What does the pectineus do?

How is it innervated?

Adducts and flexes thigh
Assists with the medial rotation of thigh

Femoral nerve

7

How are the psoas muscles innervated?

What actions do they do?

Major: Anterior rami of lumbar nerves (L1, L2 and L3)
Minor: Anterior rami of lumbar nerves (L1,L2)

Flexes the thigh at the hip joint and stabilises the joint

8

What does the Iliacus do?
How is it innervated?

Flexes the thigh at the hip joint and stabilises the joint
Femoral nerve

8

Which four muscles make up the quadriceps femoris?
How are they innervated?
What actions do they perform?

Rectus femoris
Vastus intermedius
Vastus lateralis
Vastus medialis

The femoral nerve, they extend the leg at the knee

9

What does the sartorius do?

How is it innervated?

Flexes, abducts and laterally rotates the thigh at the hip joint
Flexes the leg at the knee joint

Femoral nerve

10

Which five muscles make up the thigh adductors group?
Which nerve innervated them?

Adductor longus
Adductor brevis
Adductor magnus
Gracilis
Obturator externus

The obturator nerve

11

What does the biceps femoris do?

How is it innervated?

Flexion of the leg at the knee joint
Extension of the lower limb at the hip joint
Laterally rotates the hip and knee

Short head - common fibular division of the sciatic nerve
Long head - tibial division of the sciatic nerve

12

What do the semitendinosus and semimembranosus do?

Extension of the thigh at the hip joint
Flexion of the leg at the knee joint
Medially rotates the thigh at the hip joint

Semitendinosus is more superficial

Innervated by the tibial division of the sciatic nerve

13

What is the arterial supply and venous return to the posterior muscles of the thigh?

The blood supply is four perforating branches of the profunda femoris artery
The venous return is the profunda femoris vein

14

What happens in an avulsion fracture of the ischial tuberosity?
When can it happen?

The hamstring tendons pull off part of the ischial tuberosity
Occurs in sports that require rapid contraction and relaxation of the muscles

15

What happens in a pulled hamstring?
What is the treatment?

A hamstring sprain refers to excessive stretching or tearing of the muscle fibres.
Damage to the muscle fibres is likely to rupture the surrounding blood vessels, producing a haemotoma. The haemotoma is contained by the overlying fascia latae
Treatment follows the rice protocol

16

What is the cutaneous innervation to the thigh?

Anterior cutaneous branch (femoral)
Lateral cutaneous nerve (femoral)
Cutaneous branch of the obturator nerve
Posterior cutaneous nerve of the thigh