This study is evaluating the safety and effectiveness of the Tornier Pyrocarbon humeral head in people having a partial shoulder joint replacement, also...
Be 22 years of age or older.
Have a clinical indication for shoulder arthroplasty
Meet all other eligibility criteria
Have active local or systemic infection, sepsis, or osteomyelitis
Have had a prior arthroplasty or prior failed rotator cuff repair on the affected shoulder
Be taking more than 5mg/day corticosteroids (e.g. prednisone), within 3 months prior to surgery
Have a history of renal or hepatic disease.
Have any metabolism disorders that could compromise bone formation
Be pregnant or plan to become pregnant within the study period
Traditional artificial shoulder systems have ball-like humeral heads made of metal. The Tornier humeral head is coated with pyrocarbon that makes it feel more slippery to the touch and smoother than other metals. This goal of this study is to find out if the pyrocarbon material wears better against the socket of the shoulder joint compared to traditional metal devices. All subjects will receive the pyrocarbon humeral head.