Implant devices, and method of using the same, are provided. The implant devices have a head and a stem. The head has an upper surface, a perimeter surface, and a lower surface. The upper surface is blended into the perimeter surface. The perimeter surface is blended into the lower surface. The upper surface has a general shape of at least a portion of a superior articular surface of a talus and at least a portion of a medial articular surface of a talus. The stem has a cylindrical portion, which optionally has at least one circumferential groove.
