The restrictions are all, and I mean ALL scarring related. The doc wants to be comfortable the product and wiring are scarred in to the full betterment of the patient need. This is why I will not be able to say SURE tote that barge, and lift that bale [although that song from Showboat is certainly a good tune] and will absolutely defer to your doc.
There are others here who have learned the hard way a bale of hay is kinda on the heavy side when they are affected by a lead which shifted.
I deferred on the side of caution. Besides, my family would not allow me to do things..... even after I was less at risk.
Erring on the side of caution,
Mark56