Hand & Wrist Pyrocarbon Implants Outcomes Clinical Study

Inclusion Criteria: * 18 years or older at the time he/she receives the information and signs the informed consent (when applicable as per local regulatory requirements), * Informed on the study and willing to sign an informed consent form approved by Institutional Review Board or Ethics Committee, * Willing and able to comply with the requirements of the study protocol, * For prospective inclusion: considered for treatment with one of PyC Hand/Wrist study implants (primary or revision surgery), * For "ambispective" inclusion: must have undergone a Hand or Wrist arthroplasty with a PyC Hand/Wrist study implant before the date of first site initiation visit, * Follow-up visits (at least the last two) must be prospective, * Patient must have complete information available for each completed visit Exclusion Criteria: * Patient pertaining to one of the categories referred to as "vulnerable population" in the French Law (articles L. 1121-5 to L. 1121-8 of the French Public Health Code), or as "particularly vulnerable persons" in the Swiss Federal Law (Chapter 3, Sections 1 to 4 of CC 810.30 Federal Act on Research involving Human Beings - Human Research Act, HRA), * Patient unable to comply with the study procedures based on the judgment of the investigator (e.g. cannot comprehend study questions, inability to keep scheduled assessment times), * Any medical condition that could impact on the study outcomes functional signification at the investigator's discretion (e.g., neuropathy, allergy…)