The American College of Rheumatology (ACR) invites letters of interest from those who wish to partner with ACR and AAHKS to develop evidence-based clinical practice guidelines for perioperative management of rheumatic disease medications in total joint arthroplasty of the hip and knee. The guidelines will be developed primarily for orthopaedic surgeons and rheumatologists who care for patients undergoing total joint arthroplasty, but may also be used by primary care providers and others who care for these patients. Letters of interest must be submitted via e-mail by Friday, August 21, 2015. Visit the ACR website for detailed information and to apply.