Yeah, if your body is relaxed
you could get your leg bent back really far and hard and your bone can't take that much pain so it forces it too break unless your bones are really really strong it won't break.
More bone usage going down, More musle usage going up.
Your broken bone
sure, if you fall wrong you will break it
When osteoclasts break down bone that is called resorption.
Osteoclasts are large cells that break down bone tissue
Csteoclasts
Osteoclasts break down bone and osteoblasts build up bone.
Yes, if you land on it/ catch yourself with that hand.
Osteocytes grow bone (lay it down) and osteoclasts break down bone. So there will be many more cells laying down bone (osteocytes) in primary bone.
You can trip and that can really hurt you in many ways you can even break a bone. Trust me i know because i triped down the stairs a week ago and i got a big bruise a sore wrist and one ankle hurt and the other got sprained.
Osteoclasts