How risky is a fat transfer to the calves?

I am planning to do a tummy tuck with liposuction. Because I have very thin legs I was thinking of perhaps also doing a fat transfer to my calves. I am worried about the risks of the procedure. Does a fat transfer to the calves carry the same risks as a BBL? Myunderstanding is that with BBL injecting in the muscle should be avoided. Yet there is still a risk that the surgeon injects fat into the muscle by mistake because it is hard to know what you are injecting. Thanks!