JOINT ARTHRODESIS AND ARTHROPLASTY

摘要

An implantable fixation system for fusing a joint between a first bone and a second bone. The system may include an anchor, standoff, bolt, and cortical washer. The system may be implanted across the joint along a single trajectory, the length of the system adjustable to provide compressive force between the anchor and the cortical washer. The system may be implanted across a tibiotalar joint with the anchor positioned in the sinus tarsi. A spacing member may be inserted between the two bones and the fixation system implanted to extend through an opening in the spacing member. The spacing member may be anatomically shaped and/or provide deformity correction. An ankle arthroplasty system may include a tibial plate, a talar plate, and a bearing insert. The plates may be anchored to the tibia and talus along a single trajectory. The ankle arthroplasty system may be revisable to a fusion system.

主权项

1. A method for fusing a tibio-talar joint between an inferior end of a tibia and a superior side of a talus, the talus having a sinus tarsi adjacent to an inferior side of the talus, the method comprising:
inserting an intramedullary nail into the tibia along a superior-inferior longitudinal axis, the intramedullary nail having a proximal end and a distal end and a nail body extending longitudinally therebetween along a nail axis, an external diameter of the nail body perpendicular to the nail axis, and an anchor rotatably attached to the distal end of the intramedullary nail; positioning the nail body to intersect the inferior end of the tibia; extending the nail body across the tibio-talar joint; inserting the intramedullary nail to extend through the talus along the superior-inferior longitudinal axis, the nail body intersecting the superior side and the inferior side of the talus; positioning the distal end of the intramedullary nail to project into the sinus tarsi; and rotating the anchor to extend transverse to the superior-inferior longitudinal axis and protrude beyond the nail body external diameter.