In: Biology
Option 2 -
Sports-related Head Injury
Although sports injuries rarely contribute to fatalities, the leading cause of death from sports-related injuries is traumatic brain injury.
Sports and recreational activities contribute to about 21 percent of all traumatic brain injuries among American children and adolescents.
Traumatic Brain Injury :
A traumatic brain injury (TBI) is defined as a blow or jolt to the head or a penetrating head injury that disrupts the normal function of the brain.
TBI can result when the head suddenly and violently hits an object, or when an object pierces the skull and enters brain tissue.
Symptoms :
TBI can be mild, moderate or severe, depending on the extent of damage to the brain. Mild cases (mild traumatic brain injury, or mTBI) may result in a brief change in mental state or consciousness, while severe cases may result in extended periods of unconsciousness, coma or even death.
example :
The 4th International Conference on Concussion in Sport held in Zurich, Switzerland in 2012 defined concussion, a subset of mTBI, as the following:
Concussion :
The historical term representing low velocity injuries that cause brain ‘shaking’ resulting in clinical symptoms and that are not necessarily related to a pathological injury.
Concussion is a subset of TBI and will be the term used in this document.
It was also noted that the term commotio cerebri is often used in European and other countries.
Minor revisions were made to the definition of concussion, which is defined as follows:
Concussion is a brain injury and is defined as a complex pathophysiological process affecting the brain, induced by biomechanical forces.
Features :
Several common features that incorporate clinical, pathologic and biomechanical injury constructs that may be utilized in defining the nature of a concussive head injury include the following:
- Concussion may be caused either by a direct blow to the head, face, neck or elsewhere on the body with an impulsive force transmitted to the head.
- Concussion typically results in the rapid onset of short-lived impairment of neurological function that resolves spontaneously.
However, in some cases, symptoms and signs may evolve over a number of minutes to hours.
- Concussion may result in neuropathological changes, but the acute clinical symptoms largely reflect a functional disturbance rather than a structural injury and, as such, no abnormality is seen on standard structural neuroimaging studies.
- Concussion results in a graded set of clinical symptoms that may or may not involve loss of consciousness.
Resolution of the clinical and cognitive symptoms typically follows a sequential course.
However, it is important to note that in some cases symptoms may be prolonged.