Metatarsal arthroplasty devices, systems, and methods

A system for performing a metatarsal arthroplasty surgical procedure comprising a repositioning guide configured to guide placement of a metatarsal arthroplasty implant on a metatarsal bone, the system comprising:

• a metatarsal arthroplasty implant comprising:
• an articular member comprising:
• a convex articular surface;
• a concave bone-facing surface opposite the convex articular surface;
• and
• at least one side surface intermediate the convex articular surface and the concave bone-facing surface;
• and
• a central shaft sized for insertion into the metatarsal bone comprising:
• a central shaft longitudinal axis;
• a central shaft proximal end coupled to the concave bone-facing surface of the articular member;
• and
• a central shaft distal end extending away from the concave bone-facing surface of the articular member along the central shaft longitudinal axis;
• and
• a repositioning guide comprising:
• a repositioning guide body comprising:
• a first guide pin hole configured to receive a first guide pin placed in the metatarsal bone at a first location and a first angle,
• wherein the first guide pin hole is elongated to permit adjustment of at least one of:
• a sagittal orientation of the first guide pin in the metatarsal bone with respect to the first location and the first angle;
• and
• a lateral orientation of the first guide pin in the metatarsal bone with respect to the first location and the first angle.

A system for performing a metatarsal arthroplasty surgical procedure comprising a repositioning guide configured to guide placement of a metatarsal arthroplasty implant on a metatarsal bone, the repositioning guide comprising:

• a repositioning guide body comprising:
• an offset guide portion comprising:
• a first guide pin hole configured to receive a first guide pin placed in the metatarsal bone at a first location and a first angle;
• and
• a first plurality of guide pin holes configured to guide repositioning of the first guide pin at a second location and a second angle that is parallel to the first angle;
• and
• an angular guide portion comprising:
• one or more guide pin holes configured to receive the first guide pin placed in the metatarsal bone at the first location and the first angle and guide repositioning of the first guide pin to a third location and a third angle non-parallel to the first angle.