Charles L. Nelson, professor of orthopaedic surgery and the chief of adult reconstruction at Penn’s Perelman School of Medicine, was newly elected to a 10-year term on the American Board of Orthopaedic Surgery (ABOS). The board is made up of 21 members who are elected after recommendations from the American Orthopaedic Association (AOA), the American Academy of Orthopaedic Surgeons (AAOS), and the American Medical Association (AMA). Dr. Nelson specializes in joint replacement.