A cutting device for performing a surgical procedure includes a cannula extending between a proximal end and a distal end, a first cutting element, and a second cutting element. The cannula of the cutting device includes an inner surface defining a passageway. The first cutting element extends from the distal end of the elongated shaft so as to contact tissue. The second cutting element also extends from the distal end of the elongated shaft. The second cutting element is configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue. The cutting device also includes a deployment mechanism disposed with the proximal end of the elongated shaft for actuating movement of the second cutting element.
