Presidential address to The Knee Society. Choices and compromises in total knee arthroplasty.

The art and science of total knee arthroplasty (TKA) has come a long way in the last 15 years. TKA has become a highly regarded and frequently recommended procedure. However, some of the uncertainties of the past about selection of design continue today, albeit in modified form. Ten years ago the surgeon was faced with a sometimes bewildering choice of prosthetic devices for which there were various indications. The same remains true today.