Vastus medialis

Teardrop, VMO · Thighs

Origin: Intertrochanteric line and the linea aspera
Insertion: Tibial tuberosity via the patellar tendon
Action: Extends the knee
Nerve supply: Femoral nerve (L2–L4)

The inner quadriceps muscle, whose lower fibres form the teardrop shape above the inside of the knee. Its lowest fibres pull the kneecap inward, balancing the vastus lateralis.

Exercises listed for the quadriceps as a whole

Vastus medialis anatomy page →

Exercises listed for the quadriceps as a whole

Barbell back squat — main mover
Front squat — main mover
Walking lunge — main mover
Bulgarian split squat — main mover
Leg press — main mover
Leg extension — main mover
Conventional deadlift — assists
Romanian deadlift — assists
Barbell hip thrust — assists
Plank — assists

Other parts of the quadriceps

Sources

Last updated 18 October 2026. For education only — not medical advice, and not reviewed by a clinician.