I looked up a list of his injuries before i posted that and not one specified tears. Although you are correct in saying he has had a lot of calf injuries.Not being cheeky, but you clearly have no understanding of sports injuries.
All of Roofe's injuries have been reported as muscle strains or tears, calves mainly, as far as I can recall.
You don't take injections for calf or hamstring tears. You simply cannot continue on a torn muscle, you'll break down, the muscle will only tear further to the point you'll do serious long term, or permanent damage.
You can only have started watching Rangers in the last couple of years, if Kemar Roofe is the first player you can't wait to see the back of!
There is also umpteen examples of people playing through these injuries, and especially strains (that you just slipped into your argument there for the first time). I looked that up as well.
I think he is at it. You dont. Fair enough.