A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

A joint prosthesis is provided that includes a proximal implant for attachment to a first portion of skeletal anatomy, the proximal implant including a proximal bone attachment portion and a distal cup portion. The prosthesis also includes a distal implant for attachment to a second portion of skeletal anatomy, the distal implant including a distal bone attachment portion and a proximal cup portion. An inter-joint element is located between the distal cup and the proximal cup. The inter-joint element includes surface portions shaped to complement said cups and is preferably formed as an ovoid. Each of the proximal implant, distal implant and inter-joint element include magnetic regions whereby the inter-joint element is attracted to both the proximal cup portion and to the distal cup portion to thereby provide stability across a large angular motion.

A guide tool for guiding surgical instrumentation and facilitating insertion of surgical implants for repair of cartilage and/or bone damage and/or for remodeling of a joint surface for improved mobility in a finger or toe joint is disclosed. The guide tool includes an attachment part including a patient specific contact surface adapted to fit the proximal phalanxes or metatarsal bones in a toe or the distal-, middle-, or proximal phalanxes or metacarpal bones in a finger and further including a directing flange. A design model designing a guide tool described above and the use of the instruments are also disclosed.

This invention is directed to orthopedic implants and systems. The invention also relates to methods of implant design, manufacture, modeling and implantation as well as to surgical tools and kits used therewith. The implants are designed by analyzing the articular surface to be corrected and creating a device with an anatomic or near anatomic fit; or selecting a pre-designed implant having characteristics that give the implant the best fit to the existing defect.

A toe bone implant for correction of toe bone deformities is provided. The toe bone implant includes a first portion having a socket portion. The toe bone implant also includes a second portion having a ball portion operatively connected to the socket portion. The toe bone implant is implanted in a joint such that the ball portion is configured to rotate a predetermined amount respective to the socket portion.

An artificial joint is characterized by: having a first member including a caput part on which a prescribed curved surface is formed, and a second member including a fossa part having a surface which abuts the prescribed curved surface of the caput part; the second member being rotatable in a flexing direction of a joint with a prescribed point on the caput part being the center of rotation; and the prescribed curved surface of the caput part being defined by a curve which depicts a convex arc toward the side abutting the fossa part when the caput part is viewed from the axial direction of the rotation, and in which, when two arbitrary points are taken on the curve, the radius of curvature of the point positioned further toward the flexing side of the joint on the curve is smaller than the radius of curvature of the other point.

Systems, methods, and devices described herein relate an implant adapted to be placed in a bone in the metatarsophalangeal joint or a metacarpophalangeal joint. In some embodiments, the implant includes a head portion extending from a first surface to a second surface and having a plurality of layers located between the first surface and the second surface. In some embodiments, the first surface is lubricious. In some embodiments, the implant comprises a post portion extending from the second surface of the head portion to a bone facing surface.

Systems, methods, and devices described herein relate an implant adapted to be placed in a bone in the metatarsophalangeal joint or a metacarpophalangeal joint. In some embodiments, the implant includes a head portion extending from a first surface to a second surface and having a plurality of layers located between the first surface and the second surface. In some embodiments, the first surface is lubricious. In some embodiments, the implant comprises a post portion extending from the second surface of the head portion to a bone facing surface.

An orthopaedic implant system includes an orthopaedic implant having a plurality of fixation openings and a plug opening defining a plug opening diameter that is greater than a diameter of any of the fixation openings. The plurality of fixation openings include at least one first fixation opening configured to accept a fixation element inserted in a first bone and at least one second fixation opening configured to accept a fixation element inserted in a second bone. The plug opening is configured to accept a plug inserted in a joint space between the first bone and the second bone to cause compression distraction of the first bone and the second bone.

An orthopaedic implant system includes an orthopaedic implant having a plurality of fixation openings and a plug opening defining a plug opening diameter that is greater than a diameter of any of the fixation openings. The plurality of fixation openings include at least one first fixation opening configured to accept a fixation element inserted in a first bone and at least one second fixation opening configured to accept a fixation element inserted in a second bone. The plug opening is configured to accept a plug inserted in a joint space between the first bone and the second bone to cause compression distraction of the first bone and the second bone.