After reading the causes section of that article Al it's more likely the actual reason for the arm injury might have been the cause of the Peyronie's.
That would also coincide with a story I once heard Jerry tell about all the different things he tried attaching to his powder measure in order to see if he could get it to throw more consistently.
Glad to hear the sholder is finally better Jerry. Maybe youll be able to find some free time next year and make the Blue Bonnet.