Neurosurgery
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Concussion is an important cause of morbidity in young student athletes. The prevention, accurate diagnosis, and prompt management of concussions require that players, parents, coaches, and medical personnel are accurately educated on current concussion data and guidelines. ⋯ There is currently no uniform educational program to disseminate information to student athletes regarding concussions. This article highlights a few nationally recognized educational programs that aim to accurately and effectively inform all members of the athletic, academic, and medical communities about the importance and urgency of concussion.
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Since the original descriptions of postconcussive pathophysiology, there has been a significant increase in interest and ongoing research to study the biological underpinnings of concussion. The initial ionic flux and glutamate release result in significant energy demands and a period of metabolic crisis for the injured brain. These physiological perturbations can now be linked to clinical characteristics of concussion, including migrainous symptoms, vulnerability to repeat injury, and cognitive impairment. ⋯ Critical studies are underway to better link the acute pathobiology of concussion with potential mechanisms of chronic cell death, dysfunction, and neurodegeneration. This "new and improved" article summarizes in a translational fashion and updates what is known about the acute neurometabolic changes after concussive brain injury. Furthermore, new connections are proposed between this neurobiology and early clinical symptoms as well as to cellular processes that may underlie long-term impairment.
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Traumatic brain injury is the leading cause of death and disability in the world for adolescents according to the World Health Organization. Sports-related concussion is a small but perhaps one of the most preventable causes of that morbidity. Legislation to protect student athletes is one of the ways in which we can advocate for safety in sports. ⋯ This history is viewed from the point of view of one of the participants in the efforts to pass laws in all 50 states. The key provisions of the Zackery Lystedt Law include (1) education for parents, athletes, and coaches; (2) immediate removal from play during a game or practice, after a suspected concussion with no return to play until (3); (3) written clearance by a concussion expert for return to play; and (4) uniformity of rules for all schools who use public land. Last, the nature of this legislative process, which included attorneys, legislators, and physicians, demonstrated that effective collaboration of local, state, and national leaders can address a critical public health challenge such as concussion affecting student athletes.
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At least 300 000 sports-related concussions occur in the United States annually. With millions of American athletes, the long-term effects of repeated concussion or mild traumatic brain injury are an important topic. Unfortunately, there is a lack of strong data on the causality or prevalence of long-term effects among athletes. ⋯ Concern exists that athletes subject to repeated concussive and even subconcussive blows may be at risk of CTE, but no definitive data exist due to the difficulty in diagnosis. Animal models suggest that mild traumatic brain injuries lead to primarily a metabolic derangement with increased excitotoxic neurotransmitter release, extracellular potassium, and intracellular calcium. Further understanding of the underlying pathophysiology may eventually lead to better therapeutic and diagnostic options for the treating clinician.