Dear Dr. Roach • I am a 77-year-old woman who has enjoyed good health. Several weeks ago, I fell off a stepstool while trimming a tree in the backyard, bruising the shin on my left leg.

Bona fide dinosaur bones will stick to your finger so that even if you shake your hand, the bone will stay stuck. The stick test works from capillary action in the hollow tubes of the dinosaur ...

In the case of the shin, the tibia bone is very superficial, and pretty easily can be damaged. If the blood vessels in the periosteum, the lining of the bone, are damaged, one can develop a ...