Name

# Vastus Medialis

Pronunciation

(VAS-tus me-de-A-lus)

Origin/Proximal Attachment

Intertrochanteric line of femur; medial aspect of linea aspera

Insertion/Distal Attachment

Common quadriceps tendon into patella, tibial tuberosity via patellar ligament

Action/Relevance

Extends knee

Innervation

Femoral nerve (L2,3,4)

Notes

Fibres pass downwards and forwards at an angle of approx 15 °.

Lowest fibres run horizontally and form a bulge.

These fibres appear to blend with the adductor magnus tendon to the medial border of the patella.