Shoulder implant under review: will it last 10 years?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patient is 18 years or older and skeletally mature * Patient is capable of understanding the surgeon's explanations and following his instructions, able and willing to participate in the follow-up program * Patient gave consent to take part in the study by signing the Informed Consent Form * Patient operated from January 2013 and received the Anatomic or Reverse T.E.S.S.® V3 Modular Total Shoulder System to relieve pain and restore the joint function * Patient has adequate quality and quantity of bone stock to support the prosthesis * Patient meets at least one of the following indications: For anatomic type: * Centered osteoarthritis of the shoulder * Humeral head fractures * Rheumatoid arthritis (with intact rotator cuff) * Avascular necrosis of the humeral head * Revision of a hemi-arthroplasty with a total arthroplasty * Revision of a reverse prosthesis with an anatomic prosthesis * Revision to increase the size of the stem (length and/or diameter) * Revision of a glenoid prosthesis, a glenoid insert or a competitor's prosthesis For reverse type: * Offset osteoarthritis of the shoulder * Massive and non-repairable rotator cuff tears * Rheumatoid arthritis (with degenerative rotator cuff) * Revision of an anatomic prosthesis with a reverse prosthesis * Revision to increase the size of the stem (length and/or diameter) * Revision of a glenoid prosthesis, a glenoid insert or a competitor's prosthesis Exclusion Criteria: * Patient is unwilling or unable to give consent or to comply with the follow-up program * Patient is known to be pregnant or breastfeeding * Patient has any condition that would, in the judgment of the Investigator, place the patient at undue risk or interfere with the study * Patient is a vulnerable subject (prisoner, mentally incompetent or unable to understand what participation to the study entails, a known alcohol or drug abuser, anticipated to be non-compliant) * Patient who displays any of the following contra-indications cannot be included in this study: * Local or systemic infections * Severe muscular, neurological, or vascular deficiency of the affected joint * Poor bone quality likely to prevent osseointegration or to affect the long-term stability of the implant (Paget's disease, osteoporosis) * Any concomitant conditions likely to affect the function of the implant * Allergy to any of the implant components * Do not use the modular humeral version (screwed connection) in cases where the corolla cannot be two-thirds covered with bone stock and including the screwed modular stem/corolla junction