Study finds ‘important implications’ to understanding immunity against COVID-19

New research from Emory University indicates that nearly all people hospitalized with COVID-19 develop virus-neutralizing antibodies within six days of testing positive. The findings will be key in helping researchers understand protective immunity against SARS-CoV-2 and in informing vaccine development. The test that Emory researchers developed also could help determine whether convalescent plasma from COVID-19 survivors can provide immunity to others, and which donors' plasma should be used. The antibody test developed by Emory and validated Read more

Emory plays leading role in landmark HIV prevention study of injectable long-acting cabotegravir

Emory University played a key role in a landmark international study evaluating the safety and efficacy of the long-acting, injectable drug, cabotegravir (CAB LA), for HIV prevention. The randomized, controlled, double-blind study found that cabotegravir was 69% more effective (95% CI 41%-84%) in preventing HIV acquisition in men who have sex with men (MSM) and transgender women who have sex with men when compared to the current standard of care, daily oral emtricitabine/tenofovir disoproxil fumarate Read more

Yerkes researchers find Zika infection soon after birth leads to long-term brain problems

Researchers from the Yerkes National Primate Research Center have shown Zika virus infection soon after birth leads to long-term brain and behavior problems, including persistent socioemotional, cognitive and motor deficits, as well as abnormalities in brain structure and function. This study is one of the first to shed light on potential long-term effects of Zika infection after birth. “Researchers have shown the devastating damage Zika virus causes to a fetus, but we had questions about Read more

sports medicine

New 3D MRI Technology Puts Young Athletes Back in Action

Emory MedicalHorizon
New technology has made it possible for surgeons to reconstruct ACL tears in young athletes without disturbing the growth plate.

John Xerogeanes, MD, chief of the Emory Sports Medicine Center and colleagues in the laboratory of Allen R. Tannenbaum, PhD, professor in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, have developed 3-D MRI technology that allows surgeons to pre-operatively plan and perform anatomic Anterior Cruciate Ligament (ACL) surgery.

Link to YouTube video

The ACL is one of the four major ligaments in the knee, somewhat like a rubber band, attached at two points to keep the knee stable. In order to replace a damaged ligament, surgeons create a tunnel in the upper and lower knee bones (femur and tibia), slide the new ACL between those two tunnels and attach it both ends.

Traditional treatment for ACL injuries in children has been a combination of rehabilitation, wearing a brace and staying out of athletics until the child stops growing – usually in the mid-teens – and ACL reconstruction surgery can safely be performed.  Surgery has not been an option with children for fear of damage to the growth plate that would cause serious problems later on.

Xerogeanes explains that prior to using the 3-D MRI technology, ACL operations were conducted with extensive use of X-Rays in the operating room, and left too much to chance when working around growth plates.

Preparation with the new 3-D MRI technology allows surgery to be completed in less time than the traditional surgery using X-Rays, and with complete confidence that the growth plates in young patients will not be damaged.

Video Answers to Questions on ACL Tears

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A concussion is more than just a headache

 

Ken Mautner, MD

To ensure better management of sports concussions, physicians at Emory Sports Medicine Center have incorporated Immediate Post-concussion Assessment and Cognitive Testing (ImPACT) into their program for high school athletes.

 

Concussions occur in about 10 percent of all athletes in contact sports.

They are caused by sudden and violent rocking of the brain inside the skull from a traumatic blow to the head or upper body.

Symptoms vary in length of time and may include amnesia, disorientation, confusion, fogginess, headache, blurred vision, nausea, fatigue and sometimes loss of consciousness.

Ken Mautner, MD, sports medicine physician and assistant professor in the Department of Orthopaedics at Emory University School of Medicine, says that most athletes recover completely from concussions as long as they are not returned back to play too soon.

Repeated concussions are cumulative and may cause critical damage to the brain.  Studies have indicated a possible association with frequent or untreated concussions and development of dementia, depression and, most recently, ALS (Lou Gehrig’s Disease).  Going back to the sport too soon, before the brain recovers, leaves athletes vulnerable to repeat concussions.

Athletes in the ImPACT program take a 20-minuted baseline test on a computer that measures brain processing such as speed, memory, and visual motor skills.

Each individual’s data are stored in a computer file. In the event of injury, the athlete will take the ImPACT test in the days following concussion.  Post-concussion data are then compared to baseline data to help determine the severity and effects of the injury.

Mautner says that data from ImPACT combined with a thorough history and physical exam is the best way to prevent athletes from getting “back in the game” too soon.

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Sports medicine advances reach the masses

Drawing of the knee, courtesy of the National Institute of Arthritis and Musculoskeletal and Skin Diseases

An anterior cruciate ligament, or ACL, tear is one of the most common sports injuries, especially in sports that require running, jumping or pivoting movements.

Akin to a fibrous, thick rubber band made of collagen, the ACL runs through the center of the knee and connects the femur to the tibia, allowing the knee to bend and flex—but not too far. When it tears, the knee can become destabilized. So, for anyone who wants to continue to play sports, surgery is required.

Once a narrow subspecialty of orthopaedics with a focus on professional athletes, the field of sports medicine has exploded in the last decade. The evolution of ACL surgery is just one of several advances in the treatment of athletes and their injuries that have started to serve not only the pros who make a living from their skills, but also the weekend warrior.

This may include individuals who get hurt in the heat of a pick-up game, the neighborhood league player with tennis elbow, the college runner who pulls a tendon, or the high school football player with a possible concussion.
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