“Coordinated care” is one of the key concepts in health system reform.  It is central to the cost savings and quality improvements expected from Accountable Care Organizations, value-based purchasing and the medical home.  It is also the basis of the American Society of Anesthesiologists’ model, the perioperative surgical home.A just-published study demonstrates the potential of coordinated management of patients, inter alia, to reduce complications in knee replacement surgery.  A research team from the High Value Healthcare Collaborative used administrative data to examine differences in their delivery of primary total knee replacement (TKR) care.  They reported their findings in A Collaborative Of Leading Health Systems Finds Wide Variations In Total Knee Replacement Delivery And Takes Steps To Improve Value (Ivan M. Tomek, Allison L. Sabel, Mark I. Froimson, George Muschler, David S. Jevsevar, Karl M. Koenig, David G. Lewallen, James M. Naessens, Lucy A. Savitz, James L. Westrich, William B. Weeks, and James N....