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Patient-specific pelvic implants for acetabular reconstruction

  • US 8,597,365 B2
  • Filed: 08/04/2011
  • Issued: 12/03/2013
  • Est. Priority Date: 08/04/2011
  • Status: Active Grant
First Claim
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1. 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.

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