Access to the interior of the knee portion of the leg may be obtained through a cannula. The cannula may be inserted into a incision. The cannula may stretch the viscoelastic material of tissues forming the knee portion of the leg. Insertion of the cannula into the incision may expand the incision. The cannula may be expanded to facilitate movement of implants through the cannula. The implant may be formed of two or more portions, which may facilitate movement of the implant through the cannula. After the plurality of portions of the implant have been moved through the incision, portions of the implant may be interconnected to form a unitary implant.