SOS is a network of doctors, surgeons and physical therapists serving the Piedmont Triad area of North Carolina: • Murphy Wainer Orthopedic Specialists in Greensboro, Burlington & Eden • Guilford Orthopaedic & Sports Medicine Center located in Greensboro • Physical Therapy Centers in Greensboro and Burlington • After-hours Orthopedic Urgent Care Center located in Greensboro.