Clinical Research Directory

Inclusion Criteria: * Must have one of the following indications: * Non-inflammatory degenerative joint disease including osteoarthritis and avascular necrosis. * Rheumatoid arthritis * Revision where other devices or treatments have failed. * Correction of functional deformity. * Fractures of the proximal humerus, where other methods of treatment are deemed inadequate. * Difficult clinical management problems, including cuff arthropathy, where other methods of treatment may not be suitable or may be inadequate. * Need to obtain pain relief and improve function * Ability and willingness of the patient to follow instructions, including control of weight and activity level * A good nutritional state of the patient * The patient must have reached full skeletal maturity Exclusion Criteria: * Absolute contraindications include infection, sepsis, and osteomyelitis. * Uncooperative patient or patient with neurologic disorders who is incapable or unwilling to follow directions. * Osteoporosis. * Metabolic disorders which may impair bone formation. * Osteomalacia. * Distant foci of infections which may spread to the implant site. * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram.