The assessment of on-field dizziness could help medical staff and coaches identify high school athletes who have sustained a concussion and help clinicians manage concussions more effectively, according to a study published in The American Journal of Sports Medicine.

J. Michael Donohue, MD, an orthopedic surgeon, is joining Sanford Orthopedics and Sports Medicine, a practice with locations throughout Iowa, Minnesota, North and South Dakota, according to a Fulda Free Press 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.

Jack Powell, III MD, has been named the chair of the Mercer University School of Medicine in Macon, Ga., according to a Times-Herald report.

Michael Chmell, MD, a knee surgeon with Rockford Orthopedic Associates, has been appointed to serve a three-year term on the College of Engineering Advisory Council at the University of Notre Dame, according to a Rockford Register Star news report.

Here are 100 spine surgeons and specialists to know.