Patent ID: 8282646

Claim:
An orthopedic apparatus comprising: a multi-component patient-specific alignment guide attachable to a surface of a proximal femoral bone of a patient receiving a prosthetic implant, the guide comprising at least first and second components adjacent to one another, the first component having a first three-dimensional bone engagement surface and the second component having a second three-dimensional bone engagement surface, the first and second bone engagement surfaces configured preoperatively from three-dimensional images of the bone of the patient from imaging scans of the patient to anatomically match corresponding first and second portions of the surface of the bone, and wherein the first component has a head portion configured to engage and anatomically match a corresponding portion of a femoral head of the femoral bone and a first neck portion configured to engage and anatomically match a corresponding portion of a femoral neck of the patient, and wherein the second component has a second neck portion configured to engage and match a remaining portion of the femoral neck of the patient, wherein the first neck and second portions are configured to surround completely the entire femoral neck of the patient; at least one alignment formation for guiding a drill and formed in the first component and passing perpendicularly through the head portion of the first component; and a coupling mechanism removably connecting the first and second components to one another such that the patient-specific guide can be positioned to completely surround and contact the entire femoral neck of the patient.