The KinematX Midcarpal Total Wrist Arthroplasty Registry

Inclusion Criteria: * one of the following diagnoses and planned (or previously completed) total wrist arthroplasty with the KinematX total wrist: * osteoarthritis or post-traumatic arthritis * scapholunate advanced collapse (SLAC/SNAC wrist), * inflammatory arthritis (rheumatoid, psoriatic, other), * crystalline advanced collapse (SCAC), * STT advanced collapse (STTAC), * ulnar translocation, * Kienbӧck disease, * radial malunion Exclusion Criteria: * \<18 years of age * \>85 years of age * Prisoners * Children * Pregnant women * Contraindications to receiving the KinematX: * Local, distant or systematic acute or chronic soft tissue or bony infection * Physiologically or psychologically compromised patient * Active wrist synovitis or severe carpal bone erosion * Suspected or documented metal allergy or intolerance * Insufficient extensor tendons * Inadequate skin, bone, neural or vascular status * Severe carpal bone malalignment, displacement, absorption, neoplastic, or carpal bone pathology * Sepsis * Osteomyelitis * Uncontrolled/untreated osteoporosis or metabolic bone disease * Metabolic or endocrinologic bone disorders * Osteomalacia * Distant foci of infections which may spread to the implant site * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram