Quadriceps Muscle

Quadriceps are a large muscle group which make up the front thigh, and are also called "quads". The major muscles making up the quadriceps are the rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis.

The primary role of the quadriceps is to extend and straighten the leg outwards. Weakened quadriceps can have negative effects on leg posture and the correct movement and positioning of the knee.