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(A) Large-bore, valveless cannula (Conmed Linvatec, Largo, FL) to facilitate membrane insertion and removal. This cannula allows for repetitive, atraumatic passing of the graft into the joint and maintains a constant atmosphere between the joint and air. (B) MACI graft passed through the valveless cannula with very low-profile, toothless graspers to confirm correct size and orientation.
