Health policy implications of outcomes measurement in orthopaedics.

An emphasis on "value" over volume in health care is driving new healthcare measurement, delivery, and payment models. Orthopaedic surgery is a major contributor to healthcare spending and, as such, is the focus of many of these new models. WHERE ARE WE NOW?: An evaluation of "value" in orthopaedics requires information that has not traditionally been collected as part of routine clinical practice.