Trident II Revision Outcomes Study

Inclusion Criteria:

A. Patient has signed an IRB approved, study specific Informed Patient Consent Form.

B. Patient is a male or non-pregnant female age 18-85 years of age at the time of studydevice implantation. C. Patient is a candidate for a revision of a failed acetabular component with a cementlessacetabular component. D. Patient is willing and able to comply with postoperative scheduled clinical andradiographic evaluations.

Exclusion Criteria:

E. Patient has a Body Mass Index (BMI) > 45. F. Patient is diagnosed with InflammatoryArthritis. G. Patient has a non-Stryker retained stem. H. Patient has an active orsuspected latent infection in or about the affected hip joint at time of study deviceimplantation. I. Patient has a mental or neuromuscular disorder which would create an unacceptable riskof prosthesis instability, prosthesis fixation failure, or complications in postoperative care.

J. Patient has compromised bone stock which cannot provide adequate support and/or fixationto the prosthesis.

K. Patient is diagnosed with a systemic disease (e.g. Lupus Erythematosus) or a metabolicdisorder (e.g. Paget's Disease) leading to progressive bone deterioration. L. Patient is immunologically suppressed or receiving steroids in excess of normalphysiological requirements (e.g. > 30 days). M. Patient has a known sensitivity to devicematerials. N. Patient is a prisoner.