Duncan loop sliding knot. Verify that suture is free to slide and there is no evidence of twists or soft-tissue entanglements between suture and tissue to be apposed. Begin with two uneven parallel sutures, with post being half as long as loop as it protrudes from operative cannula. A, Grasp sutures between thumb and index finger, creating small loop by passing loop strand over post. B, Follow this by succession of four loops around post and loop strands. C, Pass tail of loop strand through original loop created, and pull on loop limb to tighten knot configuration. D, When it is tightened, gently advance knot by pulling on post. Maintain tension on post during locking sequence. Place series of half-hitches to lock this knot. E, Place first half-hitch on same post strand by passing it under post. F, Change post, and place opposite throw (overhand) over new post. Tension and advance into position. Continue sequence, alternating posts and direction of loop thrown to give total of three or four half-hitches on top of sliding knot to prevent slippage of this knot.