A first or lesser metatarsal hemi-arthroplasty implant and system for performing a hemi-arthroplasty of the first or lesser metatarsal phalangeal joint is described. The implant preferably includes a concave head and a proximal stem wherein the proximal stem may include one or more fins thereon and one or more peripherally spaced spike members to limit the rotational movement of the implant once it is inserted. A pair of notched members are provided along the periphery of the implant to assist in the removal of the implant in the event of surgical failure. An implant template is provided that includes a central opening, with spaced holes and an etched surface to facilitate the alignment and positioning of the implant.
