Ascension® Humeral Resurfacing Arthroplasty (HRA) Follow-Up Study (HRA)

Inclusion Criteria:

Any patient who is to be treated with the Ascension HRA is eligible for inclusion in this study. Therefore, Principal Investigators should attempt to recruit all patients at the study site who are treated with the Ascension HRA

The following patient will be included in the study - Patient who:

• Is treated with the Ascension HRA
• Is disabled by either non-inflammatory or inflammatory arthritis (i.e. rheumatoid arthritis, osteoarthritis and avascular necrosis
• Has mild or moderate humeral head deformity and /or limited motion
• Has post-traumatic arthritis
• Has an intact or reparable rotator cuff
• Has the means and ability to return for all required study visits
• Is willing to participate in the study
• Has signed an Informed Consent Form
• Is at least 18 years of age and skeletally mature at the time of surgery
• Is less than 75 years of age at the time of surgery

Exclusion Criteria:

• Infection, sepsis, and osteomyelitis
• Osteoporosis
• Metabolic disorders which may impair bone formation
• Osteomalacia
• Rapid joint destruction, marked bone loss or bone resorption apparent on X-ray
• Revision procedures where other devices or treatments have failed
• Refuses to be in the study; or does not have the means and ability to return for all required study visits
• Currently participating in another clinical study