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MSK exam 3 > Muscles of the Anterio and Medial Femoral Compartments > Flashcards

Muscles of the Anterio and Medial Femoral Compartments Flashcards

1
Q

Identify the 4 muscles of the quadriceps muscle

A
  • Rectus Femoris
  • Vastus Lateralis
  • Vastus Intermedius
  • Vastus Medialis
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2
Q

Which component of the quads crosses the hip and the knee?

A

Rectus Femoris

A.I.I.S and superior brim of acetabulum to the superior patellar surface and the tibial tuberosity via the patellar ligament

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3
Q

Which of the quads is bipennate?

A

Rectus Femoris

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4
Q

Which Quad muscle has two heads of origin?

A

Rectus Femoris

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5
Q

Which quad muscle is responsible for maintaining proper patellar tracking?

A

Vastus Medialis

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6
Q

What is the action of articularis genu?

A

Prevents the synovial membrane from becoming trapped between the patella and femur when leg is extended

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7
Q

What are the two muscles of the anterior femoral group that cross the hip and knee?

A

Rectus Femoris

Sartorius

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8
Q

What are the functions of the sartorius muscle?

A
  1. Flexion and lateral rotation of the thigh
  2. Flexion and medial rotation of the leg
  3. Abducts lower limb when knee is locked
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9
Q

Describe the attachments of the iliopsoas muscle

A

The psoas major attaches to the following…

  • Anterior surfaces of bodies and transverse processes of the last thoracic and all lumbar veretbrae
  • Lesser trochanter of femur

The Iliacus attaches to the following

  • Iliac fossa
  • Lesser trochanter (with psoas major)
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10
Q

What is the significance of the iliopsoas muscle relative to hip flexion? What else does it do?

A

Their action is important in flexing the trunk against gravity, as when a person does sit ups with legs straight (hips extended).

It also laterally rotates the thigh.

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11
Q

What medial femoral muscle functions as both and adductor and a hamstring muscle?

A

Adductor Magnus

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12
Q

What adductor muscle has and opening which provides acces to vascular structures passing from the anterior femoral compartment to the popliteal fossa?

A

Adductor magnus - The adductor hiatus

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13
Q

Which medial femoral muscle has an action at both the hip and the knee?

A

Gracilis - Adducts the thigh, flexes and medially rotates the leg

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14
Q

Action of psoas major?

Innervation?

A

Non-weight bearing - flexes and laterally rotates thigh

Weight bearing - flexes trunk

Side bends vertebral column to same side

Ventral Rami of spinal nerves L1,2,3

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15
Q

Action of iliacus?

Innervation?

A

Flexion and lateral rotation of the thigh

Femoral Nerve (L2,3)

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16
Q

Action and Innervation of sartorius?

A

Flexes and medially rotates leg

flexes and laterally rotates thigh

abducts lower limb when knee is locked

Femoral Nerve

17
Q

Action and Innervation Rectus Femoris

A

Flexion of thigh and extension of leg

Femoral Nerve

18
Q

A and I vastus lateralis?

A

Extension of leg

Femoral Nerve

19
Q

A and I vastus medialis?

A

Extension of leg, assists in maintaining proper patellar tracking

Femoral nerve

20
Q

A and I vastus intermedius?

A

Extension of leg

Femoral Nerve

21
Q

A and I articularis genu?

A

Prevents synovial membrane from becoming trapped between patella and femur when leg is extended.

Femoral nerve

22
Q

What are the medial femoral muscles?

A

Pectineus

Adductor Longus

Adductor brevis

Adductor Magnus

Gracilis

Obturator externus

23
Q

A and I pectineus?

A

Adduction, flexion, assists in rotation of the thigh

Femoral Nerve, Obturator Nerve, or both. Accessory obturator when present

24
Q

A and I adductor longus

A

Adduction, flexion, assists in rotation of the thigh

Obturator Nerve

25
Q

A and I adductor brevis?

A

Adduction, flexion and aids rotation of the thigh

Obturator N.

26
Q

A and I adductor Magnus?

A

Entire muscle - adducts thigh

Proximal portion - adducts and flexes, assists with rotation of the thigh,

Distal portion - adducts and extends, assists in rotation of the thigh

Obturator N. - Proximal portion

Tibial N. - Distal portion

27
Q

A and I gracilis?

A

Adducts thigh, flexes and medially rotates the leg

Obturator Nerve (anterior Division)

28
Q

A and I obturator externus?

A

Lateral rotation of the thigh

Obturator Nerve

29
Q
A

MSK exam 3 (12 decks)

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