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► Med Misc 25 > Medial Thigh Muscles > Flashcards

Medial Thigh Muscles Flashcards

1
Q

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

A

The hip adductors

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2
Q

What muscles are in the medial compartment of the thigh?

A 
Gracilis
 Obturator externus
 Adductor brevis
 Adductor longus
 Adductor magnus
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3
Q

What are all medial thigh muscles innervated by?

A

The obturator nerve

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4
Q

What does the obturator nerve arise from?

A

The lumbar plexus

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5
Q

What is the arterial supply for the medial thigh muscles?

A

Obturator artery

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6
Q

What is the largest muscle in the medial compartment?

A

The adductor magnus

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7
Q

Where does the adductor magus lie?

A

Posteriorly to the other muscles

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8
Q

What can the adductor magnus be functionally divided?

A

Into the adductor part and the hamstring part

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9
Q

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

A

Inferior ramus of pubis

Ramus of ischium

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10
Q

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

A

Ischial tuberosity

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11
Q

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

A

Gluteal tuberosity
Linea aspera
Medial supracondylar line

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12
Q

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

A

Adductor tubercle of the femur

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13
Q

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

A

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

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14
Q

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

A

The tibial part of the sciatic nerve

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15
Q

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

A

Adducts thigh

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16
Q

What is the main action of the adductor magnus?

A

Flexes thigh

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17
Q

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

A

Extends thigh

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18
Q

What shape is the adductor longus?

A

Large, flat

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19
Q

What does the adductor longus cover?

A

Partially, the adductor brevis and magnus

20
Q

What does the adductor longus form?

A

The medial border of the femoral triange

21
Q

What is the proximal attachment of the adductor longus?

A

Body of pubis inferior to pubic crest

22
Q

What is the distal attachment of the adductor longus?

A

Middle third of linea aspera of femur

23
Q

What is the innervation of the adductor longus?

A

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

24
Q

What is the main action of the adductor longus?

A

Adducts thigh

25
Q

Where does the adductor brevis lie?

A

Underneath the adductor longus

Between the anterior and posterior divisions of the obturator nerve

26
Q

What can the adductor brevis be used as clinically?

A

A landmark to identify the divisons of the obturator nerve

27
Q

What is the proximal attachment of the adductor brevis?

A

Body and inferior ramus of pubis

28
Q

What is the distal attachment of the adductor brevis?

A

Pectineal line and proximal part of linea aspera of femur

29
Q

What is the innervation of the adductor brevis?

A

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

30
Q

What is the main action of the adductor brevis?

A

Adducts thigh

To some extent, flexes thigh

31
Q

Where is the obturator externus located?

A

Most superiorly

32
Q

What is the proximal attachment of the obturator externus?

A

Margins of the obturator foramen and obturator membrane

33
Q

What is the distal attachment of the obturator externus?

A

Trochanteric fossa of femur

34
Q

What is the innervation of the obturator externus?

A

Obturator nerve (L3, L4)

35
Q

What is the main action of the obturator externus?

A

Laterally rotates the thigh

Steadies the head of the femur in the acetabulum

36
Q

Where does the gracilis lie?

A

Most superficial and medial of the muscles in the compartment

37
Q

Where does the gracilis cross?

A

Both the hip and the knee joints

38
Q

Where can the gracilis sometimes be transplanted?

A

Into the hand or forearm to replace a damaged muscle

39
Q

Where is the proximal attachment of the gracilis?

A

Body and inferior ramus of pubis

40
Q

What is the distal attachment of the gracilis

A

Trochanteric fossa of femur

41
Q

What is the innervation of the gracilis?

A

Obturator nerve (L2, L3)

42
Q

What is the main function of the gracilis?

A

Adducts thigh
Flexes leg
Helps rotate the leg medially

43
Q

What is strain the adductor muscles the underlying cause of?

A

What is colloquially known as ‘groin strain’

44
Q

What usually happens in ‘groin stain’?

A

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

45
Q

How should muscle strains be treated?

A

Rest, ice, compression and elevation

► Med Misc 25 (69 decks)

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