An orthopedic implant comprises a body having an articulating surface and a surface opposite the articulating surface. The surface opposite the articulating surface includes a fixation feature. The fixation feature is configured to have a variable width for fastening the implant to a fixation bore formed in a bone.

A system for repairing a defect on an articular surface of a patient's trochlear region, the system comprising a guide block comprising a body having an exterior surface configured to engage with the saddle portion and ridge portions of the patient's trochlear region, a protrusion extending generally from the body and configured to be received in a first bore formed in the articular surface along a reference axis, and a first cavity extending through the body configured to establish a first working axis displaced from the reference axis, wherein the exterior surface of the body and the protrusion are configured to secure the location of the guide block about the patient's trochlear region. A method for preparing an implant site in bone, comprising: establishing a reference axis extending from the bone; creating a bore in the bone by reaming about the reference axis; securing a guide block about the articular surface; establishing a first working axis extending from the bone using the guide block, the first working axis is displaced from the reference axis; and creating a first socket in the bone by reaming about the first working axis, wherein the first socket partially overlaps with the bore.

Disclosed herein are systems and methods for bone preparation with designed areas having accurate tolerance profiles to enable improved initial fixation and stability for cementless implants and to improve long-term bone ingrowth/ongrowth to an implant. One method includes preparing a bone surface to receive a prosthetic implant thereon by resecting the bone surface using a first cutting path to create a first resected region and resecting the bone of the patient using a second cutting path to create a second resected region at least partially overlapping the first resection region. The second cutting path is different than the first cutting path and either manual or robotic cutting tools can be used for creating the first and second resected regions.

A method for ameliorating joint conditions and diseases and preventing bone hypertrophy, including facilitating cartilage regrowth and preventing bone overgrowth to a damaged bone at a treatment site within a body joint to promote healing. The method comprises providing a device having a first section comprising a joint-ward end having an inner surface and an outer surface and fenestrations between the inner and outer surfaces. A second section comprises an opposing leading end and a lateral wall extending between the joint-ward end and the leading end. The leading end is penetrated into the bone to a depth to substantially position: 1) the joint-ward end in a cartilage zone; wherein the outer surface of the joint-ward end is configured to facilitate cartilage regrowth; and 2) the second section in the bone; wherein the inner surface of the joint-ward end is configured to prevent bone overgrowth into the cartilage zone within the body joint when the device is positioned at the treatment site.

Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.

A robotic system for preparing a bone to repair a bone fracture, includes a controllable guide structure configured to guide preparation of at least one bone piece during execution of a surgical plan and a control system configured to define the surgical plan. Defining the surgical plan includes determining a desired relationship between at least a first bone piece and a second bone piece that are separated by the bone fracture and planning preparation of the first bone piece to include a prepared anatomical structure configured to align the first bone piece with the second bone piece such that when aligned, the first bone piece and the second bone piece will achieve the desired relationship. The control system is further configured to control the controllable guide structure according to the surgical plan.

A component of an artificial joint according to an exemplary aspect of the present disclosure includes, inter alia, a hollow tube including bone ingrowth material. Further, the hollow tube is selectively expandable. The bone ingrowth material allows the component to become biologically fixed to adjacent bone. Further, expansion of the hollow tube increases friction between the hollow tube and the adjacent bone, which increases stability.

A surgical device is presented that combines multiple components and functions, such as, joint distraction, soft tissue distraction, a separation force that exerts a uniform tension on the knee ligaments, pre-aligned cut guides, and posterior cut guards that protect the posterior knee joint from unintentional damage by the surgical saw. A method of performing a partial knee replacement is also presented.

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.

A system for replacing a portion of an articular surface including providing an implant site and installing an implant into the implant site. The implant site includes a first and a second excision site which at least partially intersect with one another. Each of the first and second excision sites are formed by providing a respective axis and excising a portion of the articular surface relative to the respective axes.