Muscle
Vastus medialis
Stabilises the patella (VMO)
High-yield
VMO fibres prevent lateral patellar dislocation; key in patellofemoral rehab. Femoral nerve.
Overview
The medial quadriceps whose lowest oblique fibres (VMO) resist lateral patellar tracking and extend the terminal knee.
Reference facts
- Origin
Intertrochanteric line and medial lip of the linea aspera of the femur
- Insertion
Base of the patella and tibial tuberosity via the quadriceps/patellar tendon
- Action
Extends the knee; VMO stabilises the patella medially
- Innervation
Femoral nerve (L2, L3, L4)
- Blood supply
Femoral / descending genicular arteries