Question about smoked bones

I've never given my dogs any kind of bones or rawhides, but saw some smoked pork femurs today and bought them each one, thinking they'd just gnaw around on them and maybe eat the end parts. Well, I was trying to watch them all and 1 ended up breaking the bone and there are a couple of pieces missing that look like they were probably sharp. I don't know if she chewed them up or swallowed them whole. Do I need to be worried about this? I'm thinking I won't be buying them again!

Thanks for any advise!
Vicki - mommy of 4 furgirls