Abstract: Techniques are described for bone-graft harvesting in orthopedic surgery. Processing circuitry may obtain a virtual model of a bone graft to be harvested from a donor bone, wherein the virtual model of the bone graft specifies a volume of the donor bone to be harvested as the bone graft; and output for display, via a visualization device, a graphical representation of the specified volume to be harvested relative to a portion of the donor bone viewable via the visualization device.

Abstract: An example surgical pin configured to be installed in a bone of a patient includes a distal end; a shaft comprising a plurality of longitudinally spaced visually marked regions separated by non-marked regions; and a proximal end.

Abstract: An example method includes determining, by the one or more processors, an actual orientation of a surgical pin as installed in a bone of a patient; obtaining, by the one or more processors, a planned orientation of the surgical pin; determining, by the one or more processors and based on a comparison between the actual orientation of the surgical pin and the planned orientation of the surgical pin, whether the surgical pin was installed as planned; and responsive to determining that the surgical pin was not installed as planned, outputting, via a visualization device, virtual guidance to assist a surgeon in correcting the installation of the surgical pin.

Abstract: A reaming guide is provided that includes a peripheral member configured to mate with a peripheral guide feature; a rigid body extending from the peripheral member to adjacent to a reaming head of a reamer, where the rigid body is configured to be mounted to the reamer proximal of the reaming head; and a depth stop coupled with the rigid body, the depth stop having a distal portion configured to contact a first reamed glenoid surface when the reaming head has fully reamed a second reamed surface to a planned depth, the second reamed surface being angled to the first reamed surface.

Abstract: A patient specific shoulder guide is provided that includes a hub and a plurality of peripheral members. Each of the peripheral members has a peripheral member height dimension between the patient specific contact surface and a side of the peripheral member opposite the patient specific contact surface. At least one of the peripheral members is a low profile peripheral member in which the peripheral height dimension is less than the peripheral height dimension of at least one other of the peripheral members or is less than the hub height.

Abstract: A bone press includes a base; a compression plate located opposite to the base; a housing that extends between the base and the compression plate, the housing extending along a longitudinal axis of the bone press; a pressing zone within the housing and between the base and the compression plate along the longitudinal axis of the bone press; and an actuator to provide relative movement between the compression plate and the base to create compression in the pressing zone.

Abstract: A patient specific shoulder guide is provided that includes a hub and a plurality of peripheral members. Each of the peripheral members has a peripheral member height dimension between the patient specific contact surface and a side of the peripheral member opposite the patient specific contact surface. At least one of the peripheral members is a low profile peripheral member in which the peripheral height dimension is less than the peripheral height dimension of at least one other of the peripheral members or is less than the hub height.

Abstract: Bone tracking during orthopedic surgical procedures is described herein. An anti-rotation base of a registration marker of a mixed reality surgery system includes a surface configured to rest on and bear against a surface of a glenoid of a patient. The anti-rotation base also includes a plurality of pin receptacles that each define a respective pin axis. The pin axis of a first pin receptacle of the plurality of pin receptacles is not parallel to the pin axis of a second pin receptacle of the plurality of pin receptacles. Additionally, the anti-rotation base includes a mounting receptacle configured to receive the registration marker.

Abstract: A patient specific shoulder guide is provided that includes a hub and a plurality of peripheral members. Each of the peripheral members has a peripheral member height dimension between the patient specific contact surface and a side of the peripheral member opposite the patient specific contact surface. At least one of the peripheral members is a low profile peripheral member in which the peripheral height dimension is less than the peripheral height dimension of at least one other of the peripheral members or is less than the hub height.

Abstract: Joint prosthesis methods and apparatuses are provided. A bone graft blank is placed in the chamber of the bone press facing a contoured surface. The contoured surface can be part of the bone press or can comprise a surface of a patient specific negative that can be inserted into the bone press. A bone contact surface of the bone graft blank is disposed in the chamber to face the contoured surface of the patient specific insert negative. The bone contact surface of the bone graft blank is compressed against the contoured surface. The bone contact surface can be reshaped to form a patient specific bone graft.