Patent ID: 7896923

Claim:
A knee implantation system for replacing a portion of a knee joint, the knee implantation system comprising: an unicondyler tibial implant configured to replace a portion of a tibia, said tibial implant including a first member and a second member; said first member having a body portion that includes an articulating surface for replacing only a single superior articulating surface of the tibia; said second member having a textured surface, said second member is removably connected to said body portion and said textured surface is disposed about opposite said articulating surface; at least one locking mechanism formed in and integrally coupled to said body portion of said first member such that said at least one locking mechanism and said body portion are monolithic, and at least one aperture formed in said textured surface of said second member, at least one bone screw having a head and a shaft, said head is wider than said shaft, wherein said locking mechanism defines an accepting cavity in said body portion disposed adjacent at least a first compliant portion, wherein said first compliant portion is operable to resiliently deflect between a first position and a second position, the first compliant portion resiliently deflecting from said first position toward said second position due to passage of said head of said bone screw past the first compliant portion to move said head through said aperture in said textured surface and into said accepting cavity in said body portion, said first compliant portion also resiliently deflecting from said second position to said first position to retain said head within said accepting cavity.