Quadriceps (A)

Question 1

What is the position of the quadriceps?

Answer 1

Anterior compartment of upper leg

Question 2

Describe the morphology of the quadriceps

Answer 2

Rectus femoris: bipennate, spindle shaped, thick tendon attaches to upper border of patellae then forms ligamentum patellae, deep surface is tendinitis and smooth allowing movement over vastus intermedialis

Vastus lateralis: fusiform, distal tendon inserts with rec fem, lateral side of patella and ITB

Vastus intermedialis: very deep, blends with VL in mid portion and VM distally

Vastus medialis: upper fibres run downwards, lower fibres run horizontally to form vastus medialis oblique

Question 3

What is the nerve supply for the nerve supply?

Answer 3

Femoral nerve

Question 4

What are the origins of the quadriceps?

Answer 4

Rectus femoris: AIIS, area above acetabulum

VM: Femur, intertrochanteric line, shaft of femur

VI: Femur, shaft of femur (medial+lateral)

VL: Femue, greater trochanter, intertrochanteric line, gluteal tuberosity, linea aspera

Question 5

What is the insertion for the quadriceps?

Answer 5

Tibial tuberosity via patella tendon

Question 6

What are the actions for the quadriceps?

Answer 6

Hip flexion
Knee extension

Question 7

What is the function of the quadriceps?

Answer 7

Stepping
Running
Sit to stand