The primary reason for this study was to collect safety and performance data to meet regulatory requirements. However, these requirements have changed over time. Our recentassessment has determined that now there is sufficient data on this product.

MicroPort Orthopedics (MPO) is conducting this post market clinical follow-up (PMCF) study to evaluate the safety and efficacy of its total hip arthroplasty (THA) and resurfacing components marketed in the European Union (EU). These types of studies are required by regulatory authorities for all THA and resurfacing devices that do not have medium to long-term clinical evidence available at the time of gaining approval to market in the EU. This study has been designed in accordance with the medial device directives (MEDDEV) 2.12/2 rev 2.

Inclusion Criteria:

• Subject has undergone primary THA for any of the following:
• Non-inflammatory degenerative joint disease such as osteoarthritis, avascular necrosis, ankylosis, protrusio acetabuli, or painful hip dysplasia;
• Inflammatory degenerative joint disease such as rheumatoid arthritis; or
• Correction of functional deformity
• Subject is implanted with the specified combination of components
• Subject is willing and able to complete required study visits or assessments

Previously implanted bilateral subjects can have both THAs enrolled in the study provided: 1) the specified combination of components were implanted in both, 2) all other aspects of the Inclusion/Exclusion Criteria are satisfied, 3) enrollment does not exceed the subject count specified in the Investigator Agreement, and 4) the subject agrees to a second Informed Consent document specific to the second THA. Prospective enrollment of a previously unimplanted hip is not permitted in this study.

Exclusion Criteria:

• Subjects skeletally immature (less than 21 years of age) at time of primary THA surgery
• Subjects currently enrolled in another clinical study which could affect the endpoints of this protocol
• Subjects unwilling to sign the Informed Consent document
• Subjects with substance abuse issues
• Subjects who are incarcerated

Patients who have been previously implanted with a PROFEMUR® Gladiator HA Coated Modular Femoral Stem