Bone is a vital, dynamic tissue that performs many functions, including a m
ajor role in serum homeostasis. A complex interplay of factors affects bone
function and bone health, This article provides an overview of bone physio
logy and the pathophysiology of osteoporosis and fragility fracture. An und
erstanding of the material presented here will provide a foundation to asse
ss the bone health of individuals, to promote bone health, and to prevent f
racture in patients of all ages.