Abstract: Patient-specific guide systems and methods for performing bone resections for ankle arthroplasties comprises a bone guide body and a bone resection block. The bone guide body comprises a patient-specific surface for engaging a surface of a talus or a tibia, and a first pin hole and a first socket in the bone guide body. The bone resection block is removably insertable into the first socket, receives a first pin that can be inserted in the first pin hole, and includes a resection guide surface. The system further comprises a floating bone trial that attaches to the bone resection block via a floating bone guide. The floating bone trail receives a chamfer spacer and guide for further resecting the bone. The system further comprises a stylus for engagement with the resection guide surface to confirm resection depth. The bone guide body includes alignment pin and resection block snap lock features.

Abstract: Patient-specific guide systems and methods for performing bone resections for ankle arthroplasties comprises a bone guide body and a bone resection block. The bone guide body comprises a patient-specific surface for engaging a surface of a talus or a tibia, and a first pin hole and a first socket in the bone guide body. The bone resection block is removably insertable into the first socket, receives a first pin that can be inserted in the first pin hole, and includes a resection guide surface. The system further comprises a floating bone trial that attaches to the bone resection block via a floating bone guide. The floating bone trail receives a chamfer spacer and guide for further resecting the bone. The system further comprises a stylus for engagement with the resection guide surface to confirm resection depth. The bone guide body includes alignment pin and resection block snap lock features.

Abstract: Techniques for robotically guiding a cup-shaped implant or instrument are provided. In an example, the technique can include a combination of the following operations. Acquiring a calibration image including a cup-shaped element in a first orientation. Identifying a first elliptical outline of the cup-shaped element. Acquiring a navigation image including the cup-shaped element in a second orientation. Identifying a second elliptical outline of the cup-shaped element. Aligning a coordinate system of a robotic system to a patient, and positioning an implant or instrument based on a pre-operative plan within the coordinate system.

Abstract: Patient-specific guide systems and methods for performing bone resections for ankle arthroplasties comprises a bone guide body and a bone resection block. The bone guide body comprises a patient-specific surface for engaging a surface of a talus or a tibia, and a first pin hole and a first socket in the bone guide body. The bone resection block is removably insertable into the first socket, receives a first pin that can be inserted in the first pin hole, and includes a resection guide surface. The system further comprises a floating bone trial that attaches to the bone resection block via a floating bone guide. The floating bone trail receives a chamfer spacer and guide for further resecting the bone. The system further comprises a stylus for engagement with the resection guide surface to confirm resection depth. The bone guide body includes alignment pin and resection block snap lock features.