A method of using a retractor for holding open an opening includes the steps of providing a retractor, wherein the retractor includes a shape memory support including a brace portion connecting opposed sides and a plurality of bracing ribs extending from the shape memory support at the opposed sides, forming a surgical opening, pinching the opposed sides of the shape memory support in an inward direction, inserting the pinched retractor of said step of pinching into the surgical opening, and thereafter allowing the opposed sides of the shape memory position to substantially revert to their original positions.
