TOS {thoracic outlet syndrome} can have double crush and triple crush also..the collarbone/scalenes/top rib are the main TOS areas of cause & sometimes the pec minor is involved , then the other "crushes" could be the elbow/ulnar nerve involvement and the carpal tunnel involvement.

but sometimes if you can fix or repair the top of the body chain first the lower body sx will resolve.

Thinking, and per Drs suggestions, some with these RSI sx have had ulnar or carpal surgeries only to find out they still have pain & symptoms.. it was coming up the chain from the neck/collarbone/top rib areas.

I hope both members post again, I'm interested in their thoughts on the ideas posted.