Systems and methods for bone graft mixture guidance based on navigation information

A system, comprising:

• a processor;
• and
• a memory storing data thereon that, when processed by the processor, enable the processor to:
• segment an image depicting an anatomical element into a plurality of voxels;
• label, based on input information, one or more voxels of the plurality of voxels as either having a first volume type or a second volume type;
• track an operative portion of a surgical tool as the operative portion interacts with the anatomical element;
• identify a first set of voxels of the plurality of voxels that have the first volume type and that interact with the operative portion;
• determine a voxel value associated with each voxel of the first set of voxels;
• and
• sum together the voxel values of the each voxel of the first set of voxels, the sum representing a volume of a harvested autograft.

A surgical system, comprising:

• a surgical tool with an operative portion capable of resecting anatomical tissue;
• a processor;
• and
• a memory storing data thereon that, when processed by the processor, enable the processor to:
• determine a volume of a harvested autograft of an anatomical element, the determining comprising:
• segmenting a first image depicting the anatomical element into a plurality of voxels;
• labeling each voxel of the plurality of voxels as either having a first volume type or a second volume type;
• identifying a first set of voxels, wherein each voxel of the first set of voxels is labeled as having the first volume type and has been occupied by the operative portion of the surgical tool;
• determining a volume of each voxel of the first set of voxels;
• and
• summing the volume of each voxel of the first set of voxels together to determine the volume of the harvested autograft;
• determine a total volume of a bone graft for a surgical task, the determining comprising:
• identifying, based on a second image of a patient, a region of the patient eligible for the bone graft;
• and
• summing voxel values in the region of the patient to determine the total volume of the bone graft needed;
• and
• display a recommendation for a bone graft mixture, wherein the recommendation for the bone graft mixture is determined, at least in part, based on a combination of the volume of the harvested autograft, a proportion of cortical to cancellous bone available, and the total volume of the bone graft needed.