You don't amass a record contain over 100 fights without injuring yourself. Regardless, the old boys used to be fighting all the time, so who was always known for carrying injuries back then?
He also had actual back injuries, alongside Floyd Patterson. Dempsey just had the 'good times' syndrome.
Yes, the Rocks back was in awful shape because he carried around the classic forum's expectations of a small cruiserweight blasting out super heavies. A terrible burden indeed
Rocky broke his knuckle twice, tore his nose and had back issues that punctuated in a herniated disk in '56. Nelson had a alot of injures iirc