Computer-implemented surgical planning based on bone loss during orthopedic revision surgery

A computing system for assisting an orthopedic revision surgery comprising:

• a storage system configured to store a pre-revision model of a bone of a patient, the pre-revision model of the bone representing a pre-revision state of the bone after a prior orthopedic surgery on the bone and before the orthopedic revision surgery, wherein an orthopedic prosthesis was attached to the bone during the prior orthopedic surgery;
• and
• one or more processing circuits configured to:
• obtain intra-revision imaging data of the bone, the intra-revision imaging data representing an intra-revision state of the bone during the orthopedic revision surgery after removal of the orthopedic prosthesis from the bone;
• determine, based on the intra-revision imaging data, damaged parts and intact parts of the bone, wherein the damaged parts of the bone are parts of the bone that are different in the intra-revision state of the bone from a pre-morbid state of the bone, and the intact parts of the bone are parts of the bone that are the same in the intra-revision state of the bone and the pre-morbid state of the bone;
• and
• generate an intra-revision model of the bone by modifying the pre-revision model of the bone to exclude the damaged parts of the bone.

A non-transitory computer-readable data storage medium having instructions stored thereon that, when executed, cause a computing system to:

• obtain a pre-revision model of a bone of a patient, the pre-revision model of the bone representing a pre-revision state of the bone after a prior orthopedic surgery on the bone and before an orthopedic revision surgery, wherein an orthopedic prosthesis was attached to the bone during the prior orthopedic surgery;
• obtain intra-revision imaging data of the bone, the intra-revision imaging data representing an intra-revision state of the bone during the orthopedic revision surgery after removal of the orthopedic prosthesis from the bone;
• determine, based on the intra-revision imaging data, damaged parts and intact parts of the bone, wherein the damaged parts of the bone are parts of the bone that are different in the intra-revision state of the bone from a pre-morbid state of the bone, and the intact parts of the bone are parts of the bone that are the same in the intra-revision state of the bone and the pre-morbid state of the bone;
• and
• generate an intra-revision model of the bone by modifying the pre-revision model of the bone to exclude the damaged parts of the bone.