Abstract: A stemless humeral head replacement system including a base plate and a humeral head implant. The base plate includes a bone facing side, an implant side opposite the bone facing side, a curvate perimeter, at least one fin protruding from the bone facing side a first distance and extending linearly a length along the bone facing side, and an implant engagement structure on the implant side. The humeral head implant includes a curvate implant surface and a base plate engagement structure opposite the curvate implant surface, the base plate engagement structure configured to couple to the implant engagement structure of the base plate.

Abstract: A stemless humeral head replacement system including a base plate and a humeral head implant. The base plate includes a bone facing side, an implant side opposite the bone facing side, a curvate perimeter, at least one fin protruding from the bone facing side a first distance and extending linearly a length along the bone facing side, and an implant engagement structure on the implant side. The humeral head implant includes a curvate implant surface and a base plate engagement structure opposite the curvate implant surface, the base plate engagement structure configured to couple to the implant engagement structure of the base plate.

Abstract: A method of performing an arthroplasty procedure on a shoulder that includes the following steps, among others. A step of accessing a posterior aspect of the humeral head. A step of cutting the humeral head in a posterior-to-anterior direction so as to form a resected bone surface. A step of cutting at least one channel into the resected bone surface and through a posterior aspect of the humeral cortex, the at least one channel extending in a posterior-anterior direction. A step of attaching a first component including a base plate of a joint replacement system to the resected bone surface, the base plate including at least one fin that is received within the at least one channel. A step of attaching a second component of the joint replacement system to the base plate.

Abstract: A method of performing an arthroplasty procedure on a shoulder that includes the following steps, among others. A step of accessing a posterior aspect of the humeral head. A step of cutting the humeral head in a posterior-to-anterior direction so as to form a resected bone surface. A step of cutting at least one channel into the resected bone surface and through a posterior aspect of the humeral cortex, the at least one channel extending in a posterior-anterior direction. A step of attaching a first component including a base plate of a joint replacement system to the resected bone surface, the base plate including at least one fin that is received within the at least one channel. A step of attaching a second component of the joint replacement system to the base plate.