Medial Thigh Muscles Flashcards Preview

ESA 2- Musculoskeletal System > Medial Thigh Muscles > Flashcards

Flashcards in Medial Thigh Muscles Deck (33):
1

What are the muscles in the medial compartment of the thigh collectively known as?

The hip adductors

2

What muscles are in the medial compartment of the thigh?

Gracilis 
Obturator externus 
Adductor brevis
Adductor longus 
Adductor magnus

3

What are all medial thigh muscles innervated by?

The obturator nerve

4

What does the obturator nerve arise from?

The lumbar plexus

5

What is the arterial supply for the medial thigh muscles?

Obturator artery

6

What is the largest muscle in the medial compartment?

The adductor magnus

7

Where does the adductor magus lie?

Posteriorly to the other muscles

8

What can the adductor magnus be functionally divided?

Into the adductor part and the hamstring part

9

What is the innervation of the adductor part of the adductor magus?

Branches of the posterior division of obturator nerve (L2, L3, L4)

10

What is the hamstring part of the adductor magnus innervated by?

The tibial part of the sciatic nerve

11

What is the main action of the adductor magnus as a whole?

Adducts thigh

12

What is the main action of the adductor magnus?

Flexes thigh

13

What is the main action of the hamstring part of the adductor magnus?

Extends thigh

14

What shape is the adductor longus?

Large, flat

15

What does the adductor longus cover?

Partially, the adductor brevis and magnus

16

What does the adductor longus form?

The medial border of the femoral triange

17

What is the innervation of the adductor longus?

Branches of anterior division of obturator nerve (L2, L3, L4)

18

What is the main action of the adductor longus?

Adducts thigh

19

Where does the adductor brevis lie?

Underneath the adductor longus 
Between the anterior and posterior divisions of the obturator nerve

20

What can the adductor brevis be used as clinically?

A landmark to identify the divisons of the obturator nerve

21

What is the innervation of the adductor brevis?

Branches of the anterior division of the obturator nerve (L2, L3, L4)

22

What is the main action of the adductor brevis?

Adducts thigh
To some extent, flexes thigh

23

Where is the obturator externus located?

Most superiorly

24

What is the innervation of the obturator externus?

Obturator nerve (L3, L4)

25

What is the main action of the obturator externus?

Laterally rotates the thigh
Steadies the head of the femur in the acetabulum

26

Where does the gracilis lie?

Most superficial and medial of the muscles in the compartment

27

Where does the gracilis cross?

Both the hip and the knee joints

28

Where can the gracilis sometimes be transplanted?

Into the hand or forearm to replace a damaged muscle

29

What is the innervation of the gracilis?

Obturator nerve (L2, L3)

30

What is the main function of the gracilis?

Adducts thigh 
Flexes leg 
Helps rotate the leg medially

31

What is strain the adductor muscles the underlying cause of?

What is colloquially known as ‘groin strain’

32

What usually happens in ‘groin stain’?

The proximal part of the muscles are not affected, tearing near their bony attachments in the pelvis

33

How should muscle strains be treated?

Rest, ice, compression and elevation