Osteotomy systems and techniques for metatarsal correction with frontal plane realignment

A method comprising:

• cutting a metatarsal bone of a foot into a first metatarsal portion and a second metatarsal portion;
• inserting a stem portion of an intramedullary implant releasably connected to a body of an instrument into a medullary canal of the first metatarsal portion and positioning a plate portion of the intramedullary implant overlying the second metatarsal portion;
• inserting a pin into the second metatarsal portion;
• using a bone positioning device operatively connected to the body of the instrument to engage the pin inserted into the second metatarsal portion and apply a force to the pin to move the second metatarsal portion in at least a frontal plane;
• and
• inserting a fixation member through a fixation aperture extending through the plate portion of the intramedullary implant and into the second metatarsal portion to fixate a moved position of the second metatarsal portion relative to the first metatarsal portion.