Fragility Fractures
Fragility fractures are bone breaks that occur from low-impact events, such as a fall from standing height or less, which would not normally cause a fracture in a healthy bone. These fractures are a clear clinical sign of compromised bone strength, most often due to osteoporosis. Common sites include the hip, spine, wrist, humerus, and pelvis. Fragility fractures are not just isolated bone injuries; they are sentinel events that signal underlying skeletal fragility and significantly increase the risk of future fractures. In older adults, especially those over the age of 65, these fractures can lead to a dramatic decline in mobility, independence, and overall health. The consequences are often underestimated—particularly hip and vertebral fractures, which are associated with increased morbidity and mortality. Because fragility fractures are largely preventable, their presence should trigger immediate evaluation of bone health and initiation of a comprehensive management plan to prevent recurrence.
Causes & Risk Factors
Fragility fractures are primarily caused by weakened bones due to conditions like osteoporosis or osteopenia. Contributing risk factors include advanced age, postmenopausal estrogen loss, low body weight, family history of fractures, physical inactivity, poor nutrition, and chronic illnesses such as rheumatoid arthritis, diabetes, or chronic kidney disease. The use of medications like corticosteroids, sedatives, or anticonvulsants can further impair bone quality or increase fall risk. Visual impairment, poor balance, and unsafe home environments also increase the likelihood of falls, making them indirect but important risk factors.
Symptoms
Fragility fractures often present with sudden pain and limited mobility. In spinal fractures, symptoms may include acute back pain, height loss, and a stooped posture (kyphosis). Hip fractures typically result in the inability to bear weight, leg shortening, or external rotation of the leg. Wrist and arm fractures can cause localized swelling, bruising, and deformity. In many cases, the severity of the trauma appears minimal, and the fracture may be the first sign that the patient has an underlying bone disorder.
Diagnosis
Diagnosis begins with clinical evaluation and imaging studies. X-rays are used to confirm the presence of a fracture, while additional imaging such as MRI or CT scans may be required to assess complex fractures, particularly in the spine or pelvis. A bone density test (DEXA scan) is crucial in identifying underlying osteoporosis. Blood tests may be ordered to assess calcium, vitamin D, thyroid function, and markers of bone turnover, particularly in patients without a prior diagnosis of osteoporosis
Treatment Options
The management of fragility fractures involves both acute fracture care and long-term prevention of future fractures. Acute treatment may include immobilization, physical therapy, or surgical intervention depending on the location and severity of the fracture. Equally important is the initiation of osteoporosis treatment if not already in place. This includes pharmacologic therapy with bisphosphonates, denosumab, or anabolic agents like teriparatide, alongside lifestyle interventions such as fall prevention strategies, strength training, and adequate calcium and vitamin D intake. Post-fracture rehabilitation is essential for restoring mobility, reducing complications, and preventing deconditioning.
Prevention Tips
Preventing fragility fractures requires early detection of low bone mass through screening in at-risk populations, such as women over 65 and men over 70, or younger adults with risk factors. Ensuring adequate bone nutrition, engaging in regular weight-bearing exercise, and modifying the home environment to reduce fall hazards are key. Patients with one fragility fracture are at significantly higher risk for subsequent fractures, so secondary prevention through medication and fall risk reduction is critical. Public awareness, regular bone health assessments, and coordinated follow-up care are essential strategies for reducing the burden of fragility fractures in aging populations.