Osteoporosis, a chronic metabolic bone disease, increases the predisposition to fragility fractures and is associated with considerable morbidity, high health care cost as well as mortality. An elevation in the rate of incident fragility fractures will be observed proportional with the increase in the number of older people worldwide. Severe osteoporosis is currently defined as having a bone density determined by dual-energy X-ray absorptiometry that is more than 2.5 standard deviations (SD) below the young adult mean with one or more past fractures due to osteoporosis. Nutrition, physical activity and adequate vitamin D are essential for optimal bone strength throughout life. Hormone (oestrogen/sex steroid) status is also a major determinant of bone health. This review explores mechanisms involved in bone homeostasis, followed by the assessment and management of severe osteoporosis, including an overview of several treatment options in older people that range from anti-resorptive to anabolic therapies.
© 2025. The Author(s).