Unicompartmental knee arthroplasty: New indications, more complications?

Despite mixed results with unicompartmental knee arthroplasty (UKA) in the 1970s, the UKA was established as a reliable procedure in the low-demand, elderly patient. Dependable results up to a decade prompted the idea that UKA may work equally well in the younger patient. Expanded indications for UKA are being evaluated: might higher failure rates and difficult revisions emerge from younger, more active patients?