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MSK > Muscles Of Anterior & Medial Thigh > Flashcards

Muscles Of Anterior & Medial Thigh Flashcards

1
Q

Quadriceps femoris is made up of which muscles?

A

Vastus lateralis
Vastus intermedius
Vastus medialis
Rectus femoris

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2
Q

What is contained within the femoral triangle?

A

Femoral nerve
Femoral artery
Femoral vein
Femoral canal (contains lymph vessels)

Lateral to medial: NAVEL
Nerve Artery Vein Empty space Lymph canal

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3
Q

What is contained within the femoral sheath?

A

Femoral artery, femoral vein, empty space and lymphatics. (NOT femoral nerve)

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4
Q

Boundaries of the femoral triangle?

A

Lateral: sartorius
Medial: adductor longus
Superior: inguinal ligament
Floor: pectineus

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5
Q

Pectineus

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • origin: pectineal line on anterior surface of pelvis
  • insertion: pectineal line on posterior surface of femur
  • Innervation: femoral nerve
  • Actions: adduction and flexion of hip joint
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6
Q

Sartorius

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin: ASIS
  • Insertion: superior medial surface of tibia (pes anserinus)
  • Innervation: femoral nerve
  • Actions: flexion, abduction and lateral rotation of hip, knee flexion
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7
Q

Quadriceps femoris - vastus lateralis

  • origin and insertion?
  • innervation?
  • actions?
A
  • Origin: greater trochanter and lateral linea aspera
  • Insertion: unites with other 3 quads muscles and attaches to patella via quadriceps femoris tendon
  • innervation: femoral nerve
  • actions: knee extension, stabilises patella
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8
Q

Quads femoris - vastus intermedius

  • origin and insertion?
  • innervation?
  • actions?
A
  • Origin: anterior and lateral surfaces of femoral shaft
  • Insertion: unites with other quads muscles to attach to patella via quads femoris tendon
  • Innervation: femoral nerve
  • actions: knee extension, stabilises patella
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9
Q

Quads femoris - vastus medialis

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin: intertrochanteric line; medial lip of linea aspera
  • insertion: unites with other quads muscles to attach to patella via quads femoris tendon
  • innervation: femoral nerve
  • actions: knee extension, patella stabilisation
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10
Q

Quads femoris - rectus femoris

  • origin and insertion?
  • innervation?
  • actions?
A
  • Origin: ilium, just superior to acetabulum
  • insertion: quadriceps femoris tendon to patella
  • innervation: femoral nerve
  • actions: hip flexion, knee extension

This is the only muscle in the anterior thigh to cross both hip and knee joints.

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11
Q

Which two muscles make up the iliopsoas?

A

Psoas major and iliacus

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12
Q

Iliopsoas

  • Origin and insertion?
  • innervation?
  • actions?
A
  • Origin: lumbar vertebrae (psoas major) and iliac fossa (iliacus)
  • Insertion: insert together onto lesser trochanter
  • Innervation: psoas major by L1-3, iliacus by femoral nerve
  • Actions: hip flexion, assists lateral rotation
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13
Q

Adductor Magnus

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin and insertion:
    Adductor part: inferior ramus of pubis, ramus of ischium, inserting onto linea aspera of femur
    Hamstring part: ischial tuberosity, attaches to adductor tubercle on medial femoral condyle
  • Innervation:
    Adductor part by obturator nerve
    Hamstring part by tibial nerve
  • Actions: adduction of thigh, weak hip flexion (adductor), hip extension (hamstring)
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14
Q

Adductor Longus

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin: pubis
  • Insertion: attaches broadly to linea aspera of femur
  • Innervation: obturator nerve
  • Actions: adduction, medial rotation of thigh
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15
Q

Adductor brevis

  • Origin and insertion?
  • Actions?
  • Innervation?
A
  • Origin: body of pubis and inferior pubic ramus
  • Insertion: linea aspera (proximal to Adductor Longus)
  • Actions: adduction of thigh
  • Innervation: Obturator nerve
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16
Q

Obturator Externus

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin: membrane of obturator foramen
  • Insertion: passes under neck of femur to attach to greater trochanter
  • Innervation: obturator nerve
  • Actions: lateral rotation of thigh
17
Q

Gracilis

  • Origin and insertion?
  • Innervation?
  • Actions?
A
  • Origin: inferior rami of pubis; body of pubis
  • Insertion: medial surface of tibia (between tendons of sartorius and semitendinosus) - pes anserinus
  • Innervation: Obturator nerve
  • Actions: adduction of thigh at hip, knee flexion

MSK (13 decks)

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