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Duchenne muscular dystrophy
Duchenne muscular dystrophy (DMD) is a severe recessive X-linked form of muscular dystrophy characterized by rapid progression of muscle degeneration, eventually leading to loss of ambulation and death. This affliction affects one in 3500 males, making it the most prevalent of muscular dystrophies....
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Fatigue
Fatigue is a major safety concern in many fields, but especially in transportation, because fatigue can result in disastrous accidents. Fatigue is considered an internal precondition for unsafe acts because it negatively affects the human operator's...
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Gower's sign
Gower's sign is seen in conditions where the child is unable to stand on his own, and needs to support himself by his hands to get up. It is a sign of proximal muscle weakness (e.g., weakness of muscles closer to the torso, such as weakness of the...
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Motor skills disorder
Motor skills disorder (also known as motor coordination disorder or motor dyspraxia) is a human developmental disorder that impairs motor coordination in daily activities. It is neurological in origin. Many children with autism or Asperger syndrome...
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Muscle weakness
A reduction in the strength of one or more muscles.
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Muscle atrophy
Muscle atrophy is defined as a decrease in the mass of the muscle; it can be a partial or complete wasting away of muscle. When a muscle atrophies, this leads to muscle weakness, since the ability to exert force is related to mass; muscle atrophy is...
Toe walking
Toe walking refers to a condition where a person walks on his or her toes without putting much weight on the heel or any other part of the foot. Toe-walking in toddlers is common. These children eventually adopt a normal walking pattern as they grow...
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Muscle contracture
Muscle contractures can occur for many reasons, such as paralysis, muscular atrophy, and forms of muscular dystrophy. Fundamentally, the muscle and its tendons shorten, resulting in reduced flexibility.
For example, in the case of partial paralysis ...
