Is there a correlation between weight and bone density?

Can you answer Julie J’s question about Osteoporosis?:

How can you tell if your bones are more dense than others? I have a friend who is 5′11 and I’m 5′7 - we weigh the same but I appear thinner than she does. Are my bones more dense than hers and how can we determine this?

Fosomax For Osteoporosis