Bunion correction system and method

A method for correcting a bunion formed at a joint between a metatarsal and a great toe, the method comprising:

• making an incision along a side of the metatarsal;
• selecting a target location on the metatarsal;
• positioning a first guide block at the target location, the first guide block defining a plurality of trajectories which converge upon a single point;
• guiding a first instrument along each of the plurality of trajectories to create a plurality of holes through the metatarsal at the target location;
• positioning a second guide block at the target location;
• guiding a second instrument toward the plurality of holes to create an osteotomy in the metatarsal at the target location, the osteotomy dividing the metatarsal into a first metatarsal portion and a separate second metatarsal portion;
• and
• implanting an implant through the incision into the metatarsal, the implant comprising a monolithic body having a head and an anchor, wherein implanting the implant into the metatarsal comprises inserting the anchor into an intramedullary canal of the first metatarsal portion.

A method for correcting a bunion formed at a joint between a metatarsal and a great toe, the method comprising:

• making an incision along a medial side of the metatarsal, the incision 0.5 inch or less in length;
• selecting a target location on the metatarsal;
• creating a plurality of holes through the metatarsal at the target location to weaken the metatarsal at the target location;
• creating an osteotomy in the metatarsal at the target location, the osteotomy dividing the metatarsal into a first metatarsal portion and a separate second metatarsal portion;
• implanting an implant through the incision into the metatarsal, the implant comprising a monolithic body having a head and an anchor, wherein implanting the implant into the metatarsal comprises implanting the anchor into the first metatarsal portion;
• securing a length of suture to a joint capsule surrounding the joint;
• tensioning the length of suture to re-align the great toe relative to the first metatarsal portion;
• attaching the length of suture to the implant head;
• fastening the implant head to the second metatarsal portion;
• and
• closing the incision.

A method for correcting a bunion formed at a joint between a metatarsal and a great toe, the method comprising:

• making an incision along a side of the metatarsal;
• selecting a target location on the metatarsal;
• creating a plurality of holes through the metatarsal at the target location to weaken the metatarsal at the target location;
• creating an osteotomy in the metatarsal at the target location, the osteotomy resecting the metatarsal into a first metatarsal portion and a separate second metatarsal portion;
• implanting an implant through the incision into the metatarsal, the implant comprising a monolithic body having a head and an anchor, wherein implanting the implant into the metatarsal comprises inserting the anchor into an intramedullary canal of the first metatarsal portion;
• securing a length of suture to the great toe;
• tensioning the suture to re-align the great toe relative to the first metatarsal portion;
• and
• attaching the length of suture to the implant head.

A method for correcting a bunion formed at a joint between a metatarsal and a great toe, the method comprising:

• making an incision along a side of the metatarsal;
• selecting a target location on the metatarsal;
• positioning a first guide block at the target location, the first guide block defining a trajectory;
• guiding a first instrument along the trajectory to create a first hole through the metatarsal at the target location;
• positioning a second guide block at the target location;
• guiding a second instrument toward the first hole to create an osteotomy in the metatarsal at the target location, the osteotomy dividing the metatarsal into a first metatarsal portion and a separate second metatarsal portion;
• implanting an implant through the incision into the metatarsal, the implant comprising a monolithic body having a head and an anchor, wherein implanting the implant into the metatarsal comprises inserting the anchor into an intramedullary canal of the first metatarsal portion;
• securing a length of suture to the great toe;
• tensioning the suture to re-align the great toe relative to the first metatarsal portion;
• and
• attaching the length of suture to the implant head.