Operation Walk is a non-profit organization that allows severely arthritic patients in countries with underdeveloped health care systems to receive total-joint replacements at no cost. Operation Walk Syracuse, the 13th branch of the organization, opened its doors in November 2010.

Co-directors Dr. Brett Greenky and Dr. Seth Greenky are renowned joint replacement surgeons located in Syracuse, NY. The two brothers rank among the highest in New York State in volume of joint-replacement surgeries, together completing an estimated 15,000 joint replacements to date. They launched Operation Walk Syracuse to satisfy their longstanding desire to pursue global humanitarian work. In November 2011, Operation Walk Syracuse will travel to Kathmandu, Nepal to undertake its first mission.