Wrist Arthroplasty System
The system consists of components to replace the articulation of the distal radius and proximal row of carpal bones of thewrist joint and corresponding instrumentation. The components are intended to be implanted together as a system, or as ahemiarthroplasty to replace the articulation of the distal radius in conjunction with a proximal row carpectomy.
The radial component is made of Cobalt Chrome Molybdenum Alloy (CrCoMo) and has a concave articulating surface and isfixed by means of a stem which is inserted into the radial intramedullary canal. The carpal implant is an assembly consisting of atitanium carpal plate, which is fixed into the carpal bones with a central peg and two titanium screws and locking caps. Both theradial and carpal components are intended to be implanted with or without bone cement. A convex Ultra-High-Molecular-Weight Polyethylene (UHMWPE) bearing is locked onto the carpal plate to articulate with the radial component.