Medial Thigh Muscles Flashcards Preview

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Flashcards in Medial Thigh Muscles Deck (45):
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 proximal attachment of the adductor part of the adductor magnus?

Inferior ramus of pubis 
Ramus of ischium

10

What is the proximal attachment of the hamstrings part of the adductor magnus?

Ischial tuberosity

11

What is the distal attachment of the adductor part of the adductor magnus?

Gluteal tuberosity 
Linea aspera
Medial supracondylar line

12

What is the distal attachment of the hamstrings part of the adductor magnus?

Adductor tubercle of the femur

13

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

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

14

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

The tibial part of the sciatic nerve

15

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

Adducts thigh

16

What is the main action of the adductor magnus?

Flexes thigh

17

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

Extends thigh

18

What shape is the adductor longus?

Large, flat

19

What does the adductor longus cover?

Partially, the adductor brevis and magnus

20

What does the adductor longus form?

The medial border of the femoral triange

21

What is the proximal attachment of the adductor longus?

Body of pubis inferior to pubic crest

22

What is the distal attachment of the adductor longus?

Middle third of linea aspera of femur

23

What is the innervation of the adductor longus?

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

24

What is the main action of the adductor longus?

Adducts thigh

25

Where does the adductor brevis lie?

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

26

What can the adductor brevis be used as clinically?

A landmark to identify the divisons of the obturator nerve

27

What is the proximal attachment of the adductor brevis?

Body and inferior ramus of pubis

28

What is the distal attachment of the adductor brevis?

Pectineal line and proximal part of linea aspera of femur

29

What is the innervation of the adductor brevis?

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

30

What is the main action of the adductor brevis?

Adducts thigh
To some extent, flexes thigh

31

Where is the obturator externus located?

Most superiorly

32

What is the proximal attachment of the obturator externus?

Margins of the obturator foramen and obturator membrane

33

What is the distal attachment of the obturator externus?

Trochanteric fossa of femur

34

What is the innervation of the obturator externus?

Obturator nerve (L3, L4)

35

What is the main action of the obturator externus?

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

36

Where does the gracilis lie?

Most superficial and medial of the muscles in the compartment

37

Where does the gracilis cross?

Both the hip and the knee joints

38

Where can the gracilis sometimes be transplanted?

Into the hand or forearm to replace a damaged muscle

39

Where is the proximal attachment of the gracilis?

Body and inferior ramus of pubis

40

What is the distal attachment of the gracilis

Trochanteric fossa of femur

41

What is the innervation of the gracilis?

Obturator nerve (L2, L3)

42

What is the main function of the gracilis?

Adducts thigh 
Flexes leg 
Helps rotate the leg medially

43

What is strain the adductor muscles the underlying cause of?

What is colloquially known as ‘groin strain’

44

What usually happens in ‘groin stain’?

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

45

How should muscle strains be treated?

Rest, ice, compression and elevation