The details of the extent of Bradford's injuries, suffered when he played for the Rams, are a little fuzzy. Both were contact-related - he was bent awkwardly by a tackler the first time, had a tackler fall into the knee the second time. We aren't sure how much cartilage damage he has sustained. We do know he has not had microfracture surgery, the procedure that attempts to grow a sort of knee scar tissue to replace cartilage. Reporters in St. Louis were told there was no cartilage damage arising from Bradford's first injury.