The most common indication is as a Revision Procedure to treat lateral elbow pain and stiffness because of cartilage wear on the capitellum, following previous radial head replacement for fracture.When longitudinal radioulnar instability, collateral ligament injury, or overstuffing of the radiocapitellar joint following radial head replacement exist, shear and compressive loads on the capitellum are increased, and may lead to capitellar arthrosis.
Although long-term outcomes following Uni-elbow arthroplasty are unknown at this time, my early assessment and personal communication with colleagues at the Mayo Clinic, where the implant was designed, lead me to beleive that it will be a valuable option for patients with recalcitrant radiocapitellar pain due to lateral elbow arthrosis.
