Zimmer Biomet Shoulder Arthroplasty PMCF

Inclusion Criteria:

* Patient must be 20 years of age or older.
* Patient must be anatomically and structurally suited to receive shoulder arthroplasty implants.
* Patient is a candidate for shoulder arthroplasty due to one or more of the following:

  * Non-inflammatory degenerative joint disease including osteoarthritis and avascular necrosis.
  * Rheumatoid arthritis.
  * Correction of functional deformity.
  * Fractures of the proximal humerus, where other methods of treatment are deemed inadequate.
  * Difficult clinical management problems, where other methods of treatment may not be suitable or may be inadequate.
* Patient must be able and willing to complete the protocol required follow-up.
* Patient must be able and willing to sign the IRB/EC approved informed consent.
* Patient has grossly deficient rotator, (for reverse application)

  * With severe arthropathy and/or
  * Previously failed shoulder joint replacement
* Patient must have functional deltoid muscle (for reverse application)

Exclusion Criteria:

* Patient is unwilling or unable to give consent or to comply with the follow-up program.
* Patient has any condition which would in the judgement of the Investigator, place the patient at undue risk or interfere with the study.
* Patient is known to be pregnant or breastfeeding.
* Patient is a vulnerable subject (prisoner, mentally incompetent or unable to understand what participation to the study entails, a known alcohol or drug abuser, and/or anticipated to be non-compliant).
* Patient is uncooperative or patient with neurologic disorders who is incapable or unwilling to follow directions.
* Patient has any sign of infection affecting the shoulder joint or in its proximity which may spread to the implant site.
* Patient has rapid joint destruction, marked bone loss, or bone resorption apparent on roentgenogram.
* Patient has any neuromuscular disease compromising the affected limb that would render the procedure unjustifiable.
* Patient presents with osteoporosis, which in the opinion of the Investigator, may limit the subject's ability to support total shoulder arthroplasty using the study device.
* Patient has osteomalacia.
* Patient has a metabolic disorder that may impair bone formation.
* Patient has deficient rotator cuff.
* Patient presents with significant injury to the upper brachial plexus.
* Patient has paralysis of the axillary nerve.
* Patient has non-functional deltoid or external rotator muscles.