Assertion: skull's bone | /r/HasProperty | weakened
Facets:
value: such as with osteoporosis
type: OTHER
Source sentences:
text: Fractures can also occur when a bone is weakened, such as with osteoporosis, or when there is a structural problem, such as when the bone remodels excessively (such as Paget's disease) or is the site of the growth of cancer.