Metabolic bone disease refers to a group of conditions that affect the normal development, strength and structure of bones. These conditions may affect bone density, mineralization or the way bone tissue is formed and maintained.
Osteoporosis is one of the most common metabolic bone disorders. It causes bones to become weaker and more fragile, increasing the risk of fractures. Other metabolic bone conditions include osteomalacia, rickets, Paget disease of bone, osteogenesis imperfecta and other disorders affecting bone metabolism.
Healthy bones are constantly being renewed through a natural process of bone formation and bone breakdown. Osteoporosis can occur when bone loss becomes greater than bone formation, gradually reducing bone strength and increasing the risk of fractures.
Osteoporosis can develop without noticeable symptoms in its early stages. Many people may not know they have reduced bone strength until a fracture occurs following a minor fall or injury. For this reason, identifying people at increased risk and evaluating bone health can be important.
Osteoporosis commonly affects the hip, spine and wrist. Vertebral fractures can sometimes cause back pain, loss of height or changes in posture. Hip and other fractures may significantly affect mobility and independence.
Early assessment, appropriate treatment and lifestyle measures can help maintain bone strength and reduce the risk of fractures. Treatment is selected according to the individual's bone health, medical history, age and fracture risk.
Metabolic bone disorders can affect bones in different ways. Some conditions affect bone density, while others affect bone mineralization or bone formation.
Several factors can increase the risk of developing weak bones. These may include:
Osteoporosis may not cause noticeable symptoms in its early stages. However, symptoms may appear when bone weakness leads to fractures or other changes.
Any unexplained fracture or persistent bone-related symptoms should be evaluated by an appropriate healthcare professional.
Diagnosis begins with a medical history and physical examination. The doctor may assess factors such as previous fractures, family history, medications, lifestyle and other conditions that may affect bone health.
A bone mineral density test, commonly known as a DEXA or DXA scan, may be recommended to assess bone density and help evaluate fracture risk.
Depending on the suspected condition, blood or urine tests may also be recommended to evaluate calcium, vitamin D, thyroid or other factors involved in bone metabolism. Additional imaging may be required in selected cases.
Treatment depends on the specific condition, severity of bone loss, fracture history and individual risk factors. Management may include lifestyle measures, nutritional support, medications and treatment of underlying medical conditions.
Bone health can be supported through a healthy lifestyle and regular medical care when appropriate. Depending on individual needs, important measures may include maintaining adequate nutrition, staying physically active, avoiding smoking and limiting excessive alcohol consumption.
People who have risk factors for osteoporosis or a history of fractures may benefit from discussing bone health assessment with their healthcare provider. Early identification of low bone density can help guide appropriate management.