Thank you for you reply and for the time you put into this forum and website. It has been a great help in understanding problems with the spine.
The blow to the face only affected the right arm, hit was to the left cheek area while I was looking up. Weight of maybe 15-20 lbs fell about 3″-4″. The muscle atrophy in the arm is to the long head of the tricep with some minor strength loss possibly beginning in the upper forearm.
Original MRI didn’t show any cord contusion.