Nancy M. Cummings, MD, and Matthew J. Matava, MD, discuss ethical issues in sports medicine in a recent issue of AAOS Now.

Physicians, healthcare professionals and medical students should be wary of social media blurring the line between their professional and personal lives, according to a recent British Medical Association report.

Professional football players who suffer muscle injuries often have lower vitamin D, which can cause an assortment of health problems, according to a study presented at the American Orthopaedic Society for Sports Medicine's Annual Meeting in San Diego.

Anthony Galea, MD, an orthopedic surgeon in Toronto, has agreed to cooperate with federal investigators on charges that he used human growth hormones when treating professional athletes, according to a report from The Vancouver Sun.

Josh Blomgren, MD, an internal sports medicine physician at Midwest Orthopaedics at Rush in Chicago, will serve as head physician to rapper Snoop Dogg's Snoop Dogg Youth Football League, according to an All Hip Hop News report.

Frank Cammisa Jr., MD (Hospital for Special Surgery, New York City). Dr. Cammisa is the chief of the spine service at the Hospital for Special Surgery and an assistant scientist in the hospital's research division. He also serves as an associate professor of surgery at Weill Cornell Medical College in New York City. In his practice, Dr. Cammisa has special expertise in minimally invasive surgeries, laparoscopic spinal surgery, computer assisted spine surgery and treating athletic spinal injuries. He has performed surgical intervention for several professional athletes and earned recognition from the Eastern Orthopaedic Association for his research. Dr. Cammisa earned his medical degree at the College of Physicians & Surgeons in New York City and completed his residency in orthopedic surgery at HSS. His additional training includes a spine surgery fellowship at the University of Miami and the North American Traveling Fellowship from the American Orthopaedic Association.

Here are 70 hip surgeons and specialists to know.

Here are 45 hand surgeons and specialists to know.

Here are 100 orthopedic and spine physician leaders to know. The physicians on this list were selected for their leadership positions within professional societies, management positions at surgery centers and hospitals and their important contributions to the field of orthopedic and spine surgery. This list is not an endorsement of the physicians selected for inclusion.