I remember years ago seeing the actor Kevin Sorbo from Hercules talking about a blood clot he got from weightlifting and how serious it was. Something about the blood vessel rubbing and being compressed by the action of lifting.

Are you sure you want to go back to a manual type job? Most of us would be happy with a recovery that let us lead normal, less physically demanding lives. You are young and that arm has to last another 50 years!