Dual compression bone implants, systems, and methods

A system for providing dual compression to a bone joint comprising:

• an elongate device comprising:
• a distal portion receivable within a distal bone tunnel formed in a distal bone of the bone joint;
• an intermediate portion receivable within an intermediate bone tunnel formed in an intermediate bone of the bone joint;
• and
• a proximal portion receivable within a proximal bone tunnel formed in a proximal bone of the bone joint;
• an intermediate carriage receivable within the intermediate portion of the elongate device;
• and
• a proximal carriage receivable within the proximal portion of the elongate device,
• wherein:
• the intermediate carriage is configured so that, with the intermediate carriage received in the intermediate portion, the intermediate carriage is coaxial with the intermediate portion;
• the proximal carriage is configured so that, with the proximal carriage received in the proximal portion, the proximal carriage is coaxial with the proximal portion;
• the intermediate carriage is configured to couple with the intermediate bone and translate distally within the intermediate portion of the elongate device to provide a first compression force between the intermediate bone and the distal bone of the bone joint;
• and
• the proximal carriage is configured to couple with the proximal bone and translate distally within the proximal portion of the elongate device to provide a second compression force between the proximal bone and the intermediate bone of the bone joint.

A system for providing dual compression to an ankle joint comprising:

• an intramedullary nail comprising:
• a distal portion configured to be at least partially received within an intramedullary canal of a tibial bone of the ankle joint;
• an intermediate portion receivable within a first bone tunnel formed through a talar bone of the ankle joint;
• and
• a proximal portion receivable within a second bone tunnel formed through a calcaneal bone of the ankle joint;
• a talar compression carriage receivable within the intermediate portion of the intramedullary nail;
• and
• a calcaneal compression carriage receivable within the proximal portion of the intramedullary nail,
• wherein:
• the talar compression carriage is configured to be received in an intermediate set screw through an intermediate circumferential spacer;
• the calcaneal compression carriage is configured to be received in a proximal set screw through a proximal circumferential spacer;
• the talar compression carriage is configured to couple with the talar bone and translate distally within the intermediate portion of the intramedullary nail to provide a first compression force between the talar bone and the tibial bone of the ankle joint;
• and
• the calcaneal compression carriage is configured to couple with the calcaneal bone and translate distally within the proximal portion of the intramedullary nail to provide a second compression force between the calcaneal bone and the talar bone of the ankle joint.