Osteoporosis & Vertebral Fractures: A Patient Guide

Osteoporosis is a condition in which the bones gradually lose density and strength, becoming more porous and fragile. In the spine, this loss of bone can allow a vertebra to partially collapse under loads it would normally tolerate, producing a vertebral compression fracture. Many such fractures cause pain that settles over weeks with the right support, and most are managed without an operation.

What is osteoporosis?

Bone is living tissue that is constantly renewed, with old bone removed and new bone laid down. In osteoporosis this balance shifts so that bone is lost faster than it is replaced. The bone that remains has a thinner, more open internal structure, which makes it weaker and more likely to break.

Osteoporosis itself causes no symptoms — it is often described as a silent condition — and many people only learn they have it when a bone breaks easily. When a fracture occurs in the spine, it is called a vertebral compression fracture, because the front of the affected vertebra is crushed and loses height.

Which parts of the spine are affected?

Vertebral fractures most commonly occur in the thoracic spine (the upper and mid back) and at the junction with the lumbar spine (the lower back). These regions bear the forward-bending loads of everyday activity, which is why they are the most frequently affected.

When several vertebrae collapse at the front, the spine can curve forwards more than normal, producing a stooped posture and a loss of overall height.

Causes and risk factors

The most important risk factor is age, as bone density naturally declines over the years. Other recognised factors include:

• Being female, particularly after menopause, when a fall in oestrogen accelerates bone loss
• A family history of osteoporosis or fragility fracture
• Low body weight, smoking, and excess alcohol
• A diet low in calcium or vitamin D, and limited physical activity
• Long-term use of certain medicines, such as steroids
• Some hormonal, inflammatory, and digestive conditions that affect bone

Identifying and addressing these factors is an important part of reducing the risk of further fractures.

Symptoms and warning signs

A vertebral compression fracture often announces itself as sudden back pain, sometimes after a minor strain, a small fall, or a simple bend or lift. The pain is typically felt over the affected level and may ease when lying flat and worsen on standing, walking, or coughing.

Some fractures cause little pain and are noticed only as a gradual loss of height or an increasingly stooped posture.

Certain features need prompt rather than watchful assessment:

• Severe pain that does not begin to settle, or that wakes the person at night
• Fever, unexplained weight loss, or a history of cancer alongside new back pain
• Leg weakness, numbness, or any change in bladder or bowel control — symptoms that suggest pressure on the nerves and require urgent review

How osteoporosis and vertebral fractures are diagnosed

Assessment begins with a history and physical examination, including a check of posture, height, and the level of any tenderness. To confirm osteoporosis, a DEXA (DXA) scan measures bone mineral density and reports a T-score, which grades how far bone density has fallen below that of a healthy young adult.

When a fracture is suspected, X-rays show the collapsed vertebra and its height loss. An MRI can show whether a fracture is recent and still healing, and helps distinguish an osteoporotic fracture from other causes such as infection or tumour. CT gives detailed images of the bone. Blood tests may be arranged to look for treatable contributors to bone loss.

Non-surgical treatment

Most vertebral compression fractures are managed without surgery, and non-surgical care is considered first. It usually combines:

• Pain relief, using simple analgesia stepped up as needed, to allow movement and comfort
• Activity guidance — a graded return to gentle movement rather than prolonged bed rest, which itself weakens bone and muscle
• Physiotherapy to restore confidence, posture, and strength as the fracture heals
• Bone-protecting treatment of the underlying osteoporosis, including calcium and vitamin D, attention to falls risk, and medicines where indicated to strengthen bone

Many fractures become markedly more comfortable over several weeks as the bone heals.

When surgery is considered

A procedure is considered only in selected situations, not for every fracture. Vertebral augmentation — vertebroplasty or kyphoplasty — involves placing surgical cement into the fractured vertebra to stabilise it and reduce pain. It may be offered when pain is severe and has not responded to a period of non-surgical care.

More extensive surgery is uncommon and is generally reserved for fractures causing instability, significant deformity, or pressure on the nerves or spinal cord. The choice depends on the individual fracture, the person’s symptoms, bone quality, and overall health, and is decided together.

Recovery and outlook

The outlook for a single osteoporotic vertebral fracture is generally favourable, with pain improving over weeks as healing progresses. Some loss of height or a degree of forward curvature may remain. The most important long-term goal is to treat the underlying osteoporosis, because having one fragility fracture raises the risk of another. Steady attention to bone health, activity, nutrition, and falls prevention supports a return to normal life.

When to see a spine specialist

It is reasonable to seek assessment for sudden or persistent back pain following a minor strain or fall, for progressive loss of height or a stooping posture, or after any fracture that occurred with little force. Urgent review is needed for severe unremitting pain, or for any leg weakness, numbness, or change in bladder or bowel control, which may indicate pressure on the nerves.