I am researching the condition known as winging scapula (see orthopaedic section in chat). The long thoracic nerve can be damaged by neural stretching! I am in contact with several patients who developed the condition as a consequence of neural stretching. Latest research does suggest that this nerve can be tethered by fascial bands in the scalene muscles and in the bracial plexus. It could be vulnerable at these points. Details/references on the web site on winging scapulae.