A slide instrument has a longitudinal slide portion and spaced walls defining longitudinal channels. The slide instrument may be sized so that it can be inserted through standard arthroscopic portals to position the distal end of the slide instrument at a damaged tissue site. The slide instrument may be used to deliver an implant to the damaged tissue site. The implant has edges that fit within the longitudinal channels so that the implant can be moved along the slide portion to the distal end of the slide to deliver the implant to the damaged tissue site. The shape of the slide instrument protects the implant from damage as the implant is delivered from outside the patient's body to the damaged tissue site.