Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device and at least one orthopedic fixture. The surgical orientation device and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, to distract a joint, or to otherwise assist in an orthopedic procedure or procedures.

Alignment precision technology, in which a system accesses image data of a bone to which a reference marker array is fixed. The system generates a three-dimensional representation of the bone and the reference markers, defines a coordinate system for the three-dimensional representation, and determines locations of the reference markers relative to the coordinate system. The system accesses intra-operative image data that includes the bone and a mobile marker array that is attached to an instrument used in a surgical procedure. The system co-registers the intra-operative image data with the three-dimensional representation by matching the reference markers included in the intra-operative image data to the locations of the reference markers. The system determines locations of the mobile markers in the co-registered image and determines a three-dimensional spatial position and orientation of the instrument relative to the bone.

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.

Implants include fixation features which slidingly receive fixation elements. The fixation features may be negative or positive features, such as undercut channels or posts. Examples include unicompartmental tibial trays having a ridge protruding from the bone-facing side, an undercut channel formed within the ridge. Instruments are disclosed for preparing a ridge-receiving feature in bone. Implants and fixation elements are configured for implantation without penetrating a cortical wall of a bone. Instruments and surgical methods are disclosed.

A bone resection instrument, comprising means of support and positioning for the correct alignment of the tool with respect to the bone to be cut, a cutting guide, connected to the means of support and positioning, comprising a support attachable to a bone to be cut. The cutting guide comprises a gauge block having a cutting surface and removably connected to said support. The instrument is part of a bone resection kit comprising a plurality of gauge blocks, each differing in height from one another.

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 gap gauge is disclosed for facilitating an arthroplasty procedure on a first bone and a second bone of a patient. The gap gauge may include a first plate positionable in contact with the first bone, a second plate positionable in contact with the second bone. The second plate may be displaced from the first plate by a displacement. The gap gauge may further include a balance indicator configured to indicate a balance status between the first plate and the second plate and a pin guide. The pin guide is configured to couple to one of the first plate and second plate and includes a pin hole that is configured to guide a pin for insertion into the second bone. The pin can be used to couple a cutting guide to the second bone to resect the second bone to adjust the balance status.

A gap gauge is disclosed for facilitating an arthroplasty procedure on a first bone and a second bone of a patient. The gap gauge may include a first plate positionable in contact with the first bone, a second plate positionable in contact with the second bone. The second plate may be displaced from the first plate by a displacement. The gap gauge may further include a separator connected to the first plate and the second plate, a separation indicator coupled to the separator and configured to indicate the displacement, and a balance indicator connected to at least one of the first plate and the second plate. The balance indicator may indicate a balance status between the first plate and the second plate. The separator can be actuated to adjust the displacement.

Disclosed is an offset selector for determining an offset between an anchoring section and a joint section of a joint implant component. The offset selector comprising a reference portion for determining an offset, a first adjustment device for implementing the offset, and a second adjustment device for adjusting the orientation of the offset to the reference portion. The first and the second adjustment devices are coupled to each another. One of the first adjustment device and a second adjustment device are connected to the reference portion and the other one of the first adjustment device and the second adjustment device is connected to an adjustment portion. The adjustment portion being movable relative to the reference portion.

Medical devices may include a patient-engaging section and an instrument-engaging section positioned on a body of the device and the methods of forming such devices. Medical devices described herein may include resection guides, resection guide locators, and/or instruments for use in surgical methods. Devices described herein may have sections that are complementary to a natural anatomical surface of a target area of bone of a predetermined patient. In some instances, a resection guide and resection guide locator may have portions configured to couple the resection guide to the resection guide locator. Resection guides and/or resection guide locators may include openings for receiving an instrument or tool during an operation on the predetermined patient target area of bone.