The carpal tunnel is a narrow passageway made up by  the bones of the wrist through which nerves and tendons run to and from the hand. These structures are responsible for movement of the hand and fingers (the tendons that connect the muscles of the forearm to the bones in the hand) and carries sensation from the hand back to the central nervous system. In carpal tunnel syndrome, there is increased pressure on the median nerve – this nerve has both sensory (sensation) and motor (motion) functions.
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