Although the Hospital for Special Surgery is bound by HIPPA not to reveal personal details of treatment, Page Six notes that the hospital profile for Dr. Williams cites that he specializes in “knee, shoulder and elbow” surgery. However, orthopedic surgeons can treat many body parts, such as bones, joints, ligaments, tendons, and muscles.
Source: https://www.distractify.com/p/trevor-noah-hospital-lawsuit