Osteochondral transfer systems and methods

A system for osteochondral defect repair, the system comprising:

• a cutter;
• and
• a guide configured to determine a topography of a section of a cartilage surface of a first bone, the guide comprising:
• a body;
• and
• a plurality of legs;
• wherein:
• the section is defined by a perimeter between the section and surrounding cartilage;
• the cutter comprises one of a trephine, a drill, and a punch sized to remove the section;
• and
• the legs are slidably movable relative to the body into contact with one of the section and the perimeter to capture the topography.

A system for osteochondral defect repair, the system comprising:

• a cutter;
• a guide bushing comprising an interior surface;
• and
• a guide comprising:
• a body defining a longitudinal axis, the body having an exterior surface;
• a plurality of legs;
• and
• a locking mechanism;
• wherein the locking mechanism is movable between:
• an unlocked configuration, in which each of the legs is slidable, relative to the body, along the longitudinal axis to contact a first cartilage surface of a first bone to capture a topography of a first section of the first cartilage surface;
• and
• a locked configuration, in which the locking mechanism engages the legs to prevent sliding of the legs, relative to the body, along the longitudinal axis;
• wherein:
• the exterior surface of the guide body is configured to, with the legs in contact with the first cartilage surface, engage the interior surface of the guide bushing to guide placement of the guide bushing;
• and
• the interior surface of the guide bushing is configured to engage the cutter to guide motion of the cutter to remove a second section, sized to replace the first section, from a second cartilage surface of a second bone.

A method for osteochondral defect repair, the method comprising:

• positioning a guide over a first cartilage surface of a first bone, the guide comprising:
• a body comprising an exterior surface;
• and
• a plurality of legs, each of which comprises a distal tip;
• sliding the legs relative to the body so that each of the distal tips is in contact with the first cartilage surface;
• locking the legs to prevent further sliding of the legs relative to the body to capture a topography of a first section;
• placing the distal tips in contact with a second cartilage surface of a second bone;
• using the body to guide placement of a guide bushing over the second bone;
• securing the guide bushing to the second bone;
• and
• using the guide bushing to guide motion of a cutter to remove a second section of the second cartilage surface.

A system for osteochondral defect repair, the system comprising:

• a guide configured to determine a topography of a section of a cartilage surface of a first bone, the guide comprising:
• a body defining a longitudinal axis;
• a plurality of legs extending from the body;
• and
• a locking mechanism;
• wherein the locking mechanism comprises an actuator configured to cause a locking member to move radially outward toward the plurality of legs, between:
• an unlocked configuration, in which each of the legs is slidable, relative to the body, along the longitudinal axis to contact the cartilage surface to capture the topography;
• and
• a locked configuration, in which the locking member engages the legs to prevent sliding of the legs, relative to the body, along the longitudinal axis.