Patent ID: 8597365

Claim:
A method of making a pelvic implant comprising: using a three-dimensional digital image of said pelvis of the patient measuring patient-specific anatomical features of the pelvis of the patient; customizing an acetabular cage implantable into a pelvis of a patient; the acetabular cage including an acetabular cup and a plurality of flanges couplable to an upper portion of the acetabular cup; and customizing a plurality of patient-specific spacers, wherein each patient-specific spacer comprises a first surface and opposed and second surface, and a peripheral surface located between the first and second surfaces, wherein the first surface has a recess receiving a complementary-shaped portion of a corresponding flange of the plurality of flanges, wherein the second surface defines a patient-specific bone-engaging surface preoperatively configured from the three-dimensional digital image of the pelvis of the patient to complementary mate and closely conform to mirror a corresponding surface of the pelvis under the flange in only one position, wherein the peripheral surface includes a ridge surrounding the recess that is elevated relative to the first surface, wherein each patient-specific spacer of the plurality of patient-specific spacers have a selected shape and each shape corresponds to the complementary-shaped of the corresponding flange, wherein at least one flange of the plurality of flanges includes an iliac flange and at least one patient-specific spacer of the plurality of patient-specific spacers includes an iliac spacer couplable to the iliac flange.