Search results
Results from the WOW.Com Content Network
Anterior interosseous syndrome is a medical condition in which damage to the anterior interosseous nerve (AIN), a distal motor and sensory branch of the median nerve, classically with severe weakness of the pincer movement of the thumb and index finger, and can cause transient pain in the wrist (the terminal, sensory branch of the AIN innervates the bones of the carpal tunnel).
Electromyography (EMG) is a technique for evaluating and recording the electrical activity produced by skeletal muscles. [1] [2] EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram.
Nerve conduction studies, medical imaging [1] Differential diagnosis: Rotator cuff tear, cervical disc disorders, fibromyalgia, multiple sclerosis, complex regional pain syndrome, [1] pectoralis minor syndrome [3] Treatment: Pain medication, surgery [1] [2] Frequency ~1% [4]
[6] [7] This is worsened by the demyelination caused by MS. [7] Other theories have considered the role of heat shock proteins and changes to blood flow. [1] Peripheral nerve studies have shown that even a 0.5 °C increase in body temperature can slow or block the conduction of nerve impulses in demyelinated nerves.
A few common uses are determining whether a muscle is active or inactive during movement (onset of activity), assessing the velocity of nerve conduction, and the amount of force generated during movement. EMGs are the basis for nerve conduction studies which measure the electrical conduction velocity and other characteristics of nerves in the ...
The article electromyoneurography appears to describe nerve conduction studies, and it looks to be a synonym. Nerve conduction study is the more widely used term today to describe this procedure for nerve testing. Most neurologists say "EMG" or "EMG and NCV" when talking about doing both tests together.
Guillain–Barré syndrome (GBS) is a rapid-onset muscle weakness caused by the immune system damaging the peripheral nervous system. [3] Typically, both sides of the body are involved, and the initial symptoms are changes in sensation or pain often in the back along with muscle weakness, beginning in the feet and hands, often spreading to the arms and upper body. [3]
The H-reflex (or Hoffmann's reflex) is a reflectory reaction of muscles after electrical stimulation of sensory fibers (Ia afferents stemming from muscle spindles) in their innervating nerves (for example, those located behind the knee).