<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>Damage to the nerves in the brachial plexus network. These nerves originate in the spinal column and innervate the shoulder, arm and hand. Often, damage is sustained from overstretching or motor vehicle accidents.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>