Chin implant stability with applied pressure or blunt force due to martial arts (bjj and boxing)?

Hi, I would like to know how stable a chin implant becomes after it is fully healed in regards to withstanding the kind of force that can be applied during jiu-jitsu or from the blows that realistically will land on your chin during boxing. I have read that "a pocket" forms around the implant and holds it in place, but would like to understand what exactly that means, because when I think of my face there is not much "meat"/tissue in the chin area to surround the implant and hold it in place.