Quadriceps femoris muscle group

The quadriceps femoris msucle group, or 'quads'. A large muscle group that includes the 4 major muscles in the anterior compartment of the thigh that are all innervated by the femoral n., and their main action is extension of the knee.

• rectus femoris m.

• vastus lateralis m.

• vastus medialis m.

• vastus intermedius m. 

Did you mean quadratus femoris m.?