Orthopedic Joint Arthroplasty Devices, Systems, and Methods for Treating Mid-Foot Disorders
Devices, systems and methods for surgical treatment of mid-foot disorders such as osteoarthritis, spacing disorders, or alignment disorders, including mid-foot arthroplasty devices and systems for the 2 nd and 3 rd tarsometatarsal (TMT) joint, implants for post-osteotomy spacing and + realignment, arthroplasty articular implants, dowel grafts for TMT arthrodesis or fusion, dowel grafts for navicular cuneiform (NC) arthrodesis, dowel grafts for intercuneiform arthrodesis, and/or locking dowels for joint fusion.
1 . A joint arthroplasty implant comprising an implant body having an articular surface, an osseo-interface section, and a projection from the osseo-interface section, wherein the articular surface is configured to interface with the joint, the osseo-interface section is configured to interface with a recess in a bone, and the projection is configured to engage with a mating portion of the recess.
2 . The joint arthroplasty implant of claim 1 , wherein the projection has a geometry configured to interlock with a recess in a bone.
3 . The joint arthroplasty implant of claim 1 , wherein the implant body further comprises one of ceramic on metal or metal on ceramic.
4 . The joint arthroplasty implant of claim 1 , wherein the articular surface is configured to be flush with an articular surface of the resected bone.
5 . The joint arthroplasty implant of claim 2 , wherein the projection has at least one of a plurality of bone engagement projections thereupon.
6 . The joint arthroplasty implant of claim 2 , wherein the projection has rounded fillet at an end thereof.
7 . The joint arthroplasty implant of claim 2 , wherein the projection has a substantially T-shaped end thereof.
8 . The joint arthroplasty implant of claim 2 , wherein the projection tapers along a chamfered surface of the osseo-interface section.
9 . The joint arthroplasty implant of claim 2 , wherein the implant body is substantially polygonal and the projection is formed by a vertex of implant body.
10 . The joint arthroplasty implant of claim 2 , wherein the osseo-interface section has a concave central surface and the projection further comprises plural projections bounding the concave central surface of the osseo-interface section.
11 . The joint arthroplasty implant of claim 2 , wherein the osseo-interface section further comprises a convex surface and the projection further comprises a region of the convex surface furthest from the articular surface.
12 . The joint arthroplasty implant of claim 1 , further comprising a compression member coupled to the projection and to the bone.
13 . The joint arthroplasty implant of claim 12 , wherein the compression member further comprises a staple.
14 . A burr guide for preparing a bone for joint arthroplasty, comprising a guide plate having a guide recess bounded by walls of the plate, a burr opening passing through a lower surface of the guide plate, the burr opening being configured to guide a burr to cut a pattern corresponding to a geometry of a joint arthroplasty implant.
15 . The burr guide of claim 14 , further comprising a plurality of fixation openings passing through the guide plate.
16 . The burr guide of claim 15 , wherein each of the plurality of fixation openings are configured to receive a K-wire there through.
17 . The burr guide according to claim 14 , further comprising a burr plate movable within the guide recess, the burr plate having an opening configured to receive a burr therethrough.
18 . The burr guide according to claim 14 , further comprising a burr having a depth guide, the depth guide being configured to seat against the burr plate and limit the depth of the burr relative to the guide plate.
19 . A method of implanting the joint arthroplasty implant of claim 1 , comprising the steps of forming a seating recess in at least one bone of a joint, and implanting the implant body into the seating recess.
20 . A method of implanting the mid-foot arthritis arthroplasty system of claim 1 , comprising the step of implanting the implant body into a subtalar joint by a medial/lateral/posterior surgical approach.
21 . A method of implanting the mid-foot arthritis arthroplasty system of claim 1 , comprising the step of implanting the implant body into the calcaneocuboid joint by a dorsal/lateral surgical approach.
22 . A method of implanting the mid-foot arthritis arthroplasty system of claim 1 , comprising the step of implanting the implant body into at least one of the navicular cuneiform joint or talon-navicular joint by a dorsal/medial surgical approach to the respective joints.