Robotic surgery system with automated screw planning

A system comprising:

• a robotic device;
• and
• circuitry programmed to:
• plan a position, relative to a bone model, of an acetabular cup model comprising a plurality of screw holes;
• automatically select a rotation of the acetabular cup model about a central axis of the acetabular cup model by:
• determining a screw maximization priority based on a user input or preference;
• iteratively, for a plurality of different rotations of the acetabular cup model and based on the screw maximization priority, calculating a maximum length for a screw to be inserted through at least one of the plurality of screw holes;
• and
• selecting the rotation from the plurality of different rotations of the acetabular cup model;
• and
• cause installation of a physical acetabular cup on a physical bone in accordance with the rotation of the acetabular cup model relative to the bone model.

One or more non-transitory computer-readable media storing instructions that, when executed by a processor, cause the processor to perform operations comprising:

• planning a position, relative to a bone model, of an acetabular cup model comprising a plurality of screw holes;
• automatically selecting a rotation of the acetabular cup model about a central axis of the acetabular cup model by:
• determining a screw maximization priority based on a user input or preference;
• iteratively, for a plurality of different rotations of the acetabular cup model and based on the screw maximization priority, calculating a maximum length for a screw to be inserted through at least one of the plurality of screw holes;
• and
• selecting the rotation from the plurality of different rotations of the acetabular cup model;
• and
• causing installation of a physical acetabular cup on a physical bone in accordance with the rotation of the acetabular cup model relative to the bone model.