Jonathan F. Dickens, MD is Chief of the Orthopaedic Sports Medicine and Shoulder Service at Walter Reed National Military Medical Center (WRNMMC) in Bethesda, Maryland; Vice-Chair of Research for the Uniformed Services University Department of Surgery; and Adjunct Faculty at the John A. Feagin Jr. Sports Medicine Fellowship at the US Military Academy in West Point, New York. He is an Associate Professor of Surgery at the Uniformed Services University of the Health Sciences. Dr. Dickens earned his Bachelor of Science from Davidson College in North Carolina before entering the Army. He subsequently completed medical school at Indiana University in Bloomington, followed by Orthopaedic Surgery Residency at WRNMMC. He completed his Fellowship in Sports Medicine and Arthroscopy at the John A. Feagin Jr. Sports Medicine Fellowship at West Point. Dr. Dickens is a Lieutenant Colonel in the US Army and has served as a Consultant Physician for Special Operations Task Force–Afghanistan in 2015 and Commander of the Hamid Karzi International Airport NATO Role II Hospital in Kabul, Afghanistan in 2019. Brett D. Owens, MD is a Board-certified orthopedic sports medicine surgeon. Dr. Owens is currently a Professor in the Department of Orthopaedic Surgery at the Brown University Alpert Medical School and practices in Providence, Rhode Island. He is a retired Colonel in the US Army and previously served as Chief of Orthopaedics and Sports Medicine at Keller Army Hospital, West Point, New York. He is currently Team Physician for Brown University Athletics and the Providence Bruins (AHL). He attended the US Military Academy and Georgetown University School of Medicine. He completed his residency at the University of Massachusetts and the John A. Feagin Jr. Sports Medicine Fellowship at West Point. He was an AOA North American Traveling Fellow as well as an AOSSM-ESSKA Traveling Fellow. Dr. Owens has published more than 250 articles in orthopedics and sports medicine. This is his fourth textbook. His research has garnered the O’Donoghue Research Award, Aircast Award, and NCAA Research Awards from the American Orthopaedic Society for Sports Medicine and the AAOS Kappa Delta Award. Dr. Owens is proud to serve as Associate Editor of the American Journal of Sports Medicine since 2012.