What medical words include the prefix quadri?

* Quadriceps: A muscle group on the front of the thigh.

* Quadriplegia: Paralysis of all four limbs.

* Quadruplets: Four children born at the same time.

* Quadricuspid: Having four cusps or flaps.

* Quadrivalent: Having four valencies or combining power.

* Quadrate: Having four equal sides.