Patient-specific pelvic implants for acetabular reconstruction

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.

2. The method of claim 1 , wherein customizing the plurality of patient-specific spacers including forming a recess of the iliac spacer to have an elongated rectangular shape.

3. The method of claim 1 , wherein customizing the plurality of patient-specific spacers including forming a recess of the iliac spacer to have a square shape.

4. The method of claim 1 , wherein customizing the acetabular cage includes providing the plurality of flanges to include an ischial flange couplable to the upper portion of the acetabular cup.

5. The method of claim 4 , wherein customizing the plurality of patient-specific spacers includes providing an ischial flange having a recess that is a triangular shape.

6. The method of claim 1 , further comprising:

providing an ischial flange as one of the plurality of flanges; and

providing an ischial spacer as one of the plurality of patient-specific spacers.

7. The method of claim 1 , further comprising:

providing at least one flange of the plurality of flanges to be removably couplable to the acetabular acetabular cup.

8. The method of claim 1 , further comprising:

providing an ischial blade modularly couplable to the acetabular cup.

9. The method of claim 1 , further comprising:

providing an obturator foramen hook modularly couplable to the acetabular cup.

10. The method of claim 1 , wherein at least one patient-specific spacer has variable thickness.

11. The method of claim 1 , wherein customizing the plurality of patient-specific spacers includes providing a varied thickness among the plurality of patient-specific spacers.

12. The method of claim 11 , wherein customizing the acetabular cage includes providing at least one of flanges of the plurality of flanges to engage the outer slot.

13. The method of claim 1 , wherein customizing the acetabular cage includes forming at least one outer slot in the acetabular cup.

14. The method of claim 1 , further comprising:

forming a bore into the patient-specific spacers.