A dowager’s hump is a visible rounding of the upper back caused by an exaggerated forward curvature of the thoracic spine. The medical term is hyperkyphosis, defined as a spinal curvature greater than 40 degrees. It’s most common in older adults, affecting an estimated 20 to 40 percent of elderly people worldwide, though some studies in community settings have found rates above 60 percent in people over 60.
What Happens in the Spine
Your thoracic spine, the section between your neck and lower back, has a natural gentle curve. With hyperkyphosis, that curve becomes significantly more pronounced. As the upper back rounds forward, the head shifts ahead of the body’s center of gravity, the shoulder blades spread apart, the lower back flattens, and overall standing height decreases. These changes don’t happen overnight. They develop gradually over months or years, often so slowly that you don’t notice until the curvature becomes visible or starts causing problems.
Postural vs. Structural Kyphosis
Not every rounded upper back involves permanent bone changes. Postural kyphosis comes from habitual slouching and weak muscles. The key distinction: if the curve straightens out when you lie flat on your back, it’s postural. The spine is still flexible, and the problem is muscular, not skeletal. Structural kyphosis, on the other hand, involves rigid changes in the vertebrae themselves. When you lie down, the curve stays. This rigidity typically comes from compression fractures, degenerative disc disease, or conditions like Scheuermann disease, which affects spinal development in adolescence.
This distinction matters because it determines what kind of improvement is realistic. Postural kyphosis is largely reversible with consistent effort. Structural kyphosis can be managed but usually not fully corrected without more aggressive intervention.
Common Causes
Osteoporosis is the most well-known driver of a dowager’s hump. As bones lose density, the vertebrae in the upper back become vulnerable to compression fractures. These fractures cause the front edge of a vertebra to collapse while the back edge stays intact, creating a wedge shape. Stack several wedge-shaped vertebrae on top of each other and the spine curves forward. This process can happen silently. Many vertebral compression fractures cause little or no pain at the time, so people don’t realize their spine is changing shape.
Long-term use of corticosteroids is another significant risk factor. These medications, commonly prescribed for autoimmune conditions, asthma, and inflammatory diseases, are one of the most frequent causes of secondary osteoporosis. As regional bone mineral density decreases, the degree of thoracic curvature tends to increase.
Beyond bone loss, simple aging plays a role. Degenerative changes in the spinal discs, weakening of the muscles that hold the spine upright, and decades of forward-leaning posture all contribute. Many cases of hyperkyphosis in older adults involve no vertebral fractures at all, just the cumulative effect of muscle weakness and disc changes.
Symptoms Beyond Appearance
The visible hump is what most people notice first, but hyperkyphosis affects the body in ways that go well beyond cosmetics.
As the spine curves forward, it compresses the chest cavity. This reduces rib cage mobility and limits how fully the lungs can expand. Research from the Framingham Study found that women with the most severe curvature lost approximately 100 mL more lung capacity over 16 years compared to women with the least curvature, a meaningful reduction that can leave you feeling short of breath during everyday activities like climbing stairs or walking uphill.
Balance becomes a real concern. The forward shift of the upper body moves your center of mass ahead of your base of support, making you less stable on your feet. People with hyperkyphosis have a higher risk of falls and fractures, which creates a vicious cycle: a fall can cause new compression fractures, which worsen the curvature, which further impairs balance.
Back and neck pain are common, as the spine works harder to compensate for the abnormal alignment. The shoulders, pelvis, and cervical spine all adjust their positioning to accommodate the curve, which can create pain in areas far from the upper back itself. Severe cases with multiple compression fractures can even reduce the space in the abdominal cavity, leading to a feeling of fullness after eating only small amounts.
How It’s Diagnosed
Doctors typically assess hyperkyphosis with a physical exam and spinal X-rays. The gold standard measurement is the Cobb angle, calculated from a lateral X-ray by measuring the angle between the most tilted vertebrae at the top and bottom of the curve. A Cobb angle above 40 degrees is generally considered hyperkyphotic, though some clinicians use a cutoff of 50 degrees. In one study using the 50-degree threshold, about 29 percent of older adult participants qualified as hyperkyphotic.
During the exam, your doctor will likely ask you to lie flat on your back. If the curve disappears, the kyphosis is postural. If it remains rigid, imaging helps determine whether compression fractures, disc degeneration, or other structural changes are involved.
Exercise and Physical Therapy
Targeted exercise is the first-line approach for most cases of hyperkyphosis, and it works better than many people expect. A clinical trial of older women with thoracic hyperkyphosis found that a corrective exercise program done twice a week for eight weeks improved spinal posture, balance, and overall well-being. The sessions lasted about an hour and focused on strengthening the muscles that pull the shoulders back and extend the spine, while stretching the tight muscles in the chest and front of the shoulders that pull the body forward.
The types of exercises that help most include upper back extensions, where you work against gravity to straighten the thoracic spine; rows and reverse flys that strengthen the muscles between the shoulder blades; and chest stretches that open up the front of the body. Core strengthening also plays a role, since the abdominal and lower back muscles support the entire spinal column.
Consistency matters more than intensity. The structural and muscular changes that cause hyperkyphosis developed over years, and reversing them takes sustained effort. Most physical therapy programs run 8 to 12 weeks, with the expectation that you’ll continue the exercises on your own afterward.
Procedures for Compression Fractures
When vertebral compression fractures are the cause and pain is significant, two minimally invasive procedures can help. Vertebroplasty involves injecting bone cement into the fractured vertebra to stabilize it. Kyphoplasty uses an inflatable balloon to restore some of the lost vertebral height before the cement is injected. In studies, kyphoplasty restored vertebral height to 97 percent of the original in some cases, compared to about 30 percent with vertebroplasty. The average improvement in spinal curvature was about 6.6 degrees with either procedure.
These procedures aren’t appropriate for everyone. About a third of patients who undergo them don’t see meaningful improvement in vertebral height or curvature. Candidates who benefit most have recent fractures with pain that clearly matches the fracture location. Severe vertebral collapse, where more than 75 percent of the height is already lost, is generally a contraindication.
Protecting Your Bones Early
Since bone loss is a major contributor, maintaining bone density is one of the most effective prevention strategies. Current guidelines recommend 1,000 mg of calcium daily for adults up to age 50, increasing to 1,200 mg for women over 51 and all adults over 70. Vitamin D intake should be at least 600 IU daily through age 70, with some experts recommending higher amounts for older adults.
Weight-bearing exercise, the kind where your body works against gravity like walking, jogging, dancing, or resistance training, stimulates bone formation and slows the rate of loss. Starting this earlier in life builds a larger reserve of bone density to draw from as you age, but it’s beneficial at any point. Avoiding smoking and limiting alcohol also protect bone health, as both accelerate the loss of bone mineral density over time.