Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.

A method and instrumentation for performing a patellofemoral arthroplasty orthopaedic procedure includes coupling an anterior cutting block to a femur of a patient such that the cutting block references local anatomy of the femur. The anterior cutting block is used to perform a number of bone cuts to establish a trochlear cavity in the femur. The trochlear cavity is formed such that a trochlear prosthesis may be inset into the cavity and substantially flush with the surrounding cartilage. A finishing burring guide and burr bit may be used to detail the shape and/or size of the trochlear cavity. Additionally, a trochlear drill guide may be used to facilitate establishing peg holes in the patient's femur to receive corresponding pegs of the trochlear prosthesis.

An orthopaedic surgical instrument includes a patella trial and drill guide that may be used to both perform a surgical trial of the patellofemoral joint and guide the surgeon in drilling a number of anchor holes in the patella of the patient. A method of using such an orthopaedic surgical instrument is also disclosed.

A surgical system includes a robotic arm, a constraint mechanism coupled to the robotic arm, and a computer system configured to control the robotic arm to constrain manual movement of the constraint mechanism to a plane. The computer system is also configured to control the robotic arm to lock the constraint mechanism in a desired pose when the constraint mechanism is moved to the desired pose via manual movement in the plane.

Disclosed herein are systems and methods of patella arthroplasty. A navigated patella clamp used in an arthroplasty procedure includes first and second movable jaw members and an actuation member coupled to the first and second jaw members for moving the first and second jaw members along a plane toward and away from one another. The patella clamp further includes a tracker and adjustable stylus for positioning the clamp on a patient's patella below a desired resection plane. The adjustable stylus coupled to the clamp is used to check the position and orientation of the clamp with respect to the patella to ensure the correct amount of bone will be resected from the patella corresponding to the thickness of a patella component that will be implanted on the resected patella.

Surgical constructs, assemblies and methods of tissue fixation are disclosed. A self-positioning drill guide can automatically reference a drill point or drill angle for drilling tunnels in bones by using peripheral edges. A self-positioning drill guide can be a center point drill guide configured to automatically center drill tunnels in bones by using peripheral edges that precisely reference the center point. A centering guide helps to automatically determine the center of bones as well as to provide increased control during drilling.

A surgical system includes a surgical tool, a tracking system configured to obtain tracking data indicative of positions of the surgical tool relative to an anatomical feature, an indicator light configured to emit light, and a computer system programmed to control the indicator light to change a color of the light based on the tracking data.

Plates for patella fracture reduction and fracture reduction devices are described. More particularly plates and devices for patella reduction that are universally fit to a front surface or perimeter of a patella and include a plurality of attachment holes disposed therein for receiving a fastener. In some embodiments, the plates include removable tab members.

Implant assemblies, systems, and methods for replacing a knee joint may include a method of revising a knee joint prosthesis implanted in a knee of a patient to provide increased stability to the knee joint prosthesis by replacing a first tibial insert with a second tibial insert that provides more constraint that the first tibial insert. A knee joint prosthesis system and kit are also provided that may include a tibial baseplate component, a femoral component, and a tibial insert that is selectively interchangeable with other tibial inserts to provide varying levels of constraint and stability to the knee joint prosthesis.

A method of generating resection data for use in planning an arthroplasty procedure on a patient bone covered at least partially in cartilage includes receiving a three-dimensional patient bone model comprising a bone model surface, and correlated with a position and orientation of the patient bone via a navigation system. The method further includes identifying a target region on the bone model surface of the model for intra-operative registration, and receiving location data for a first plurality of points based on the intra-operative registration of the cartilage on the patient bone in locations corresponding to points within the target region on the bone model surface. The method further includes determining resection depth based at least in part on the location data for the first plurality of points; and generating resection data using the resection depth, the resection data configured to be utilized by the navigation system during the arthroplasty procedure.