Related Experiment Video
Updated: Jul 14, 2026
07:30
A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
Published on: September 21, 2017
Cyclists injured while sharing the road with motor vehicles.
Tadesse Haileyesus1, Joseph L Annest, Ann M Dellinger
1Office of Statistics and Programming, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, Georgia 30340, USA.
Summary
Annually, over 62,000 cyclists in the US required emergency department treatment for motor vehicle-related injuries. Head injuries were common, especially in children and males, highlighting the need for improved road safety measures.
Area of Science:
- Public Health
- Injury Prevention
- Epidemiology
Background:
- Cyclist injuries from motor vehicle (MV) encounters pose a significant public health concern.
- Understanding the scope of non-fatal injuries is crucial for developing targeted interventions.
Purpose of the Study:
- To estimate the national incidence of non-fatal cyclist injuries treated in US hospital emergency departments (EDs) due to motor vehicle collisions.
- To identify demographic groups at higher risk for these injuries.
Main Methods:
- Analysis of non-fatal injury data from the National Electronic Injury Surveillance System All Injury Program (NEISS-AIP) for the years 2001-2004.
- Calculation of annual injury rates per 100,000 population.
Main Results:
- An estimated 62,267 individuals annually received ED treatment for cyclist injuries involving MVs.
- The highest injury rates were observed in children aged 10-14 years and males.
- Extremity injuries were most common (41.9%), with head injuries (concussions, internal head injuries) affecting 38.6% of hospitalized patients.
Conclusions:
- A substantial burden of non-fatal cyclist injuries results from motor vehicle encounters.
- Interventions focusing on road design and promoting safe cycling behaviors are essential.
- Reducing cyclist injuries requires a multi-faceted approach addressing both environmental and behavioral factors.
Related Concept Videos
01:19Types of Collisions - II
When two or more objects collide with each other, they can stick together to form one single composite object (after collision). The total mass of the object after the collision is the sum of the masses of the original objects, and it moves with a velocity dictated by the conservation of momentum. Although the system's total momentum remains constant, the kinetic energy decreases, and thus such a collision is an inelastic collision. Most of the collisions between objects in daily life are...
01:04Types Of Collisions - I
When two objects come in direct contact with each other, it is called a collision. During a collision, two or more objects exert forces on each other in a relatively short amount of time. A collision can be categorized as either an elastic or inelastic collision. If two or more objects approach each other, collide and then bounce off, moving away from each other with the same relative speed at which they approached each other, the total kinetic energy of the system is said to be conserved. This...
01:22Burn Injuries
Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
01:11Direct Motor Pathways
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...
00:46Motor Units
A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
01:13Motor Units
The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor units come in different sizes, with smaller units...