Provided is a prosthesis for ankle arthroplasty including a talar dome component configured to be attached to a talus bone. Also provided is a guide instrument for guiding a reamer to prepare a talus to receive the talar dome component.

A device comprises a base. A support is attached to the base. The support is shaped to receive a calf of a person and adapted to receive a wire or pin for securing a tibia of a person. A foot plate is attachable to the base. The foot plate has a plurality of attached members. The members are configured for receiving at least a first wire or pin to fix a foot of the person relative to the foot plate while the foot plate is oriented normal to a superior-inferior direction of the foot. The foot plate is rotatable relative to the base while the foot plate is attached to the base.

A system includes a first implant component and a second implant component. The first implant component is configured to be secured to a bone and includes a plate and a coupler extending upward from the plate and defining a coupler axis. The second implant component is configured to be coupled to the first implant component. The second implant component includes an articulation surface and defines a cavity configured to receive the coupler of the first implant component. The second implant component is couplable to the first implant component at a plurality of rotational orientations about the coupler axis.

A partial ankle prosthesis includes a tibial component including a superior surface configured to be attached to a lower end of a patient's tibia; a poly component that is fixedly attached to the tibial component and includes a concave inferior surface of an anti-friction material; and a talar component including an inferior surface configured to be attached to a patient's talus and a single convex superior surface configured to mate with the inferior surface of the poly component; and the partial ankle prosthesis is configured to be implanted in a single compartment of a patient's ankle.

In various embodiments, a surgical plate includes a body extending between a first planar surface and a second planar surface. The body is configured to couple to a first bone. The first planar surface is configured to couple to a first articulation surface. An anterior articulation portion is coupled to the body. The anterior articulation portion includes a third planar surface extending perpendicular to the first and second planar surfaces and a second articulation surface spaced apart from and coupled to the third planar surface. The second articulation surface is configured to articulate with respect to a second bone.

A method of ankle replacement includes forming an anterior cut in a bone and forming a stem hole in a distal end of the bone. The stem hole is formed using a plurality of broaches positioned against the distal end of the bone through the anterior cut. A first portion and a second portion of a stem implant are inserted into the stem hole through the anterior cut in the bone. The first portion is coupled to the second portion using a coupling device inserted through the anterior cut in the bone. The stem implant is impacted into the stem hole using an offset impactor.

Devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display are disclosed.

System, including apparatus and methods, for ankle fusion using a device for separating a first bone and a second bone of an ankle region. In some embodiments, the device may comprise an expandable spacer including first and second bone-contacting surface regions facing away from one another and configured to be abutted with the first and second bones, respectively. A distance between the first and second bone-contacting surface regions may be adjustable to change the separation of the first and second bones. The first bone-contacting surface region may correspond to a portion of a sphere and may be configured to be disposed at least partially in a concavity formed surgically in the first bone. The expandable spacer offers improved control over the length of the lower limb and the orientation of the foot during ankle fusion surgery.

Devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display are disclosed.

Proposed is an artificial ankle joint bearing element in which a contact area of the bearing element with a talus element is increased such that stress is evenly distributed during bearing movement of the bearing element on the talus element and wear of the bearing element is reduced under the same load; the bearing element has a front and a rear convexly formed to increase a contact area with a tibial element and distribute stress; and the front and rear of the bearing element are asymmetrically formed such that the rear thereof is formed to have a smaller height than the front thereof so as to facilitate the insertion of the bearing element into space between the talus element and the tibial element from an anterior side thereof during artificial ankle joint surgery.