Wrist arthroplasty system and method

A wrist arthroplasty method using a resection instrument including a set of interchangeable distal radius guides, a guide block, and a depth control instrument, wherein each respective distal radius guide of the set of interchangeable distal radius guides includes a trial socket formed integrally with a reaming guide, the method comprising:

• creating an incision relative to the wrist;
• excising, respectively, each of a scaphoid bone, a lunate bone, and a triquetrum bone;
• selecting, based on a radius bone, a respective distal radius guide from the set of interchangeable distal radius guides for use with the resection instrument, wherein the respective distal radius guide includes a respective trial socket and a respective reaming guide;
• removably securing the guide block to the radius bone;
• preparing a distal surface of the radius bone with the aid of the respective reaming guide while the guide block is removably secured to the radius bone;
• preparing a proximal capitate surface with the aid of k-wires, drills and reamers;
• aligning a capitate implant based on the respective trial socket while the guide block is removably secured to the radius bone;
• securing the capitate implant to a capitate bone such that a capitate stem of the capitate implant is inserted within a capitate hole created in the capitate bone;
• aligning a radial implant according to alignment marks on the guide block removably secured to the radius bone;
• securing the radial implant to the radius bone such that a radial stem of the radial implant is inserted within a radial hole created in the radius bone;
• and
• removing the guide block from the radius bone.