Scheuermann’s Disease: Why a Teenager’s Back Rounds Forward?

In Scheuermann’s disease, the upper back rounds forward because several vertebrae grow unevenly and develop a wedge shape. This condition often becomes noticeable in early adolescence, particularly during rapid growth spurts. Because the curve develops from structural changes within the vertebral column, improving your posture cannot fully straighten the spine.

At Total Orthopedics & Sports Medicine, our spine specialists review your child’s remaining spinal growth and assess the severity of the curve before recommending the treatment. If your child is still growing, we may use a back brace and targeted exercises to limit further progression. We also schedule regular follow-up visits to monitor the curve, protect spinal health, and adjust the treatment plan. Call 855-321-6784 to book your appointment.

How Does Scheuermann’s Disease Lead to a Rounded Back in Teenagers?

Scheuermann’s disease leads to a rounded back by increasing the natural forward curve of the thoracic spine. As the curve increases, the upper spine appears more rounded, and the shoulders may shift forward. Over time, this change can lead to the noticeable hunchback appearance associated with Scheuermann’s kyphosis.

Here are the common factors that may contribute to Scheuermann’s disease:

• Uneven vertebral growth: Differences in growth between the front and back of the vertebrae can gradually change their normal shape.
• Growth plate changes: Changes in the growth areas of the vertebrae may interfere with normal bone development.
• Changes in the spinal discs: The discs between affected vertebrae may develop changes that contribute to the spinal curvature.
• Mechanical stress: Ongoing stress on the spine during growth may affect normal vertebral development.
• Rapid skeletal growth: Periods of rapid growth during adolescence may contribute to further progression of the spinal curve.

During spinal growth, these changes may affect the normal development and alignment of the spine, particularly in the thoracic region. For example, one study found abnormalities in the vertebral growth areas that may disrupt normal bone development and contribute to the rounded upper back. Similarly, a study of 21 young patients found spinal disc changes in 55% of patients with Scheuermann’s disease (juvenile kyphosis). In comparison, only 10% patients without the disease showed similar disc changes.

What Happens to the Spine as the Curve Develops?

As the curve develops, the spine may gradually lose its flexibility and become more rounded. This change can make it difficult for you to fully straighten your upper back. Over time, the surrounding muscles and joints may work harder to support the altered spinal alignment, which can lead to discomfort.

The increasing curve can also affect the alignment of other parts of the spine. For example, the lower back may develop a deeper inward curve. In contrast, the neck may adjust its alignment to help maintain the head upright. These changes are known as compensatory curves. In fact, a clinical review reports that Scheuermann’s kyphosis typically affects three consecutive vertebrae, with at least 5 degrees of forward angling in each vertebra. The review also notes that the neck and lower back may develop increased spine curves to help balance the rounded upper back.

Is Scheuermann’s Disease Linked to Family History?

Yes, Scheuermann’s disease can be linked to family history. Because of this hereditary component, your child may have a higher risk of developing a rounded back. A study involving nearly 35,000 twins also found a higher occurrence of Scheuermann’s disease among identical twins than non-identical twins. Researchers estimated that genetic factors may contribute about 74% to the development of the condition. However, a family history does not mean your child will develop the condition, as other factors may also affect spinal development.

What Are the Different Types of Scheuermann Kyphosis?

Thoracic and thoracolumbar kyphosis are the two main types of Scheuermann kyphosis, classified by the location of the spinal curve. The thoracic kyphosis develops in the upper and middle back. In contrast, the thoracolumbar kyphosis develops at the junction between the middle and lower back. Because the curve develops in different areas, the symptoms can also vary between the two types.

Here’s how each type affects the shape and alignment of the spine:

1. Thoracic Scheuermann Kyphosis

Scheuermann kyphosis primarily affects the mid-thoracic spine, leading to an increased forward curvature of the upper back. As the curvature increases, the upper back may appear more rounded, and the shoulders may shift forward. Unlike postural kyphosis, this structural curve does not fully straighten when you stand upright.

2. Thoracolumbar Scheuermann Kyphosis

Thoracolumbar Scheuermann kyphosis develops lower in the back, near the transition between the thoracic and lumbar spine. The lumbar spine refers to the lower section of the spine, while the thoracic spine refers to the middle section of the back. Because the curve develops at a lower level, it may change the overall spinal alignment without creating the same rounded upper-back appearance.

How Is a Rounded Back Different From Poor Posture?

A rounded back is a structural spinal condition, while poor posture develops from prolonged changes in body position. Poor posture does not alter the shape of the vertebrae and usually improves when you change position or move. In contrast, Scheuermann’s disease causes structural changes in the vertebrae, resulting in a more rigid spinal curve.

Here are some other differences between the two conditions:

What Are the Early Signs of a Rounded Back in Teens?

The early signs of a rounded back in the teens may include a noticeable curve in the upper back, rounded shoulders, and stiffness. You may also notice a change in posture while sitting or standing. Additional signs may include tight hamstrings, reduced flexibility, or discomfort with prolonged physical activity as the spinal curve develops.

You may also notice the following changes as the spinal curve develops.

• More noticeable upper-back rounding
• Uneven shoulder height
• One shoulder blade looks prominent
• The head or pelvis shifts position

If you have noticed these changes in your teen’s back, you may be unsure whether they are related to posture or a developing spinal condition. Without an evaluation, it can be difficult to know what is causing the change or whether the curve may progress as the spine grows. Book your appointment for a thorough evaluation of the spinal curve. Our spine specialists can assess the spinal curve, identify its cause, and recommend treatment or follow-up to limit further progression.

Why Does the Curve Worsen During a Growth Spurt?

Uneven development of the vertebrae during rapid growth can worsen the spinal curve. For example, when the front of the vertebrae grows more slowly than the back, the individual vertebral bones can develop anterior wedging. This uneven development can increase the forward tilt of the affected vertebrae, increasing the degree of the curve.

Can Scheuermann’s Disease Affect a Teen’s Self-Esteem?

Yes, Scheuermann’s disease can affect a teen’s self-esteem. The condition affects an estimated 4% to 8% of children in the United States, and some teens may feel self-conscious as the spinal curve becomes more visible. These concerns may also affect their self-confidence and contribute to social isolation. As a result, some adolescents with Scheuermann’s disease may avoid sports or other activities because they feel insecure about their appearance.

Where Does Pain Develop Along the Spinal Curve?

Pain commonly develops around the affected area of the spine, especially in the middle or lower back. The discomfort may increase with prolonged sitting, standing, or physical activity. In some cases, muscle fatigue around the curved area may also contribute to ongoing back discomfort.

However, the severity of pain does not always match the degree of spinal curvature. Some people with a more pronounced curve may experience less pain, while others with a smaller curve may experience more discomfort. A study of 150 people with Scheuermann’s disease also reports that curve size did not determine pain severity.

Can the Rounded Back Get Worse Over Time?

Yes, the rounded back can worsen over time, particularly in young adults. During a growth spurt, uneven development of the vertebrae can increase the spinal curve. Once growth is complete, the curve usually stops progressing, although a severe curve may continue to cause back pain and stiffness. Severe cases may also restrict lung capacity and contribute to spinal degeneration as you get older.

Here are some risk factors that may contribute to the worsening of the curve:

• Muscle imbalance: Weak upper back muscles and tight chest muscles may cause the child’s spine to shift forward.
• Ligament strain: Repeated slouching can strain the ligaments that support the spine.
• Age-related changes: Reduced bone density, muscle weakness, and disc degeneration may increase the curve.
• Ongoing spinal stress: Repeated stress on the spine may contribute to further alignment changes.
• Delayed early diagnosis and treatment: Without timely evaluation, a progressing curve may not receive appropriate treatment.

When Should You See a Spine Specialist?

You should see a spine specialist if the spinal curve becomes more noticeable or causes severe pain or stiffness. You should also consult a scoliosis specialist if the curve continues to progress during growth. Besides that, worsening discomfort or increasing difficulty standing upright should be evaluated promptly.

In addition, according to a review published in PubMed, progressive spinal deformity and ongoing pain are the most common reasons people with Scheuermann kyphosis seek medical evaluation. Similarly, you should see a specialist if stiffness restricts your movement or begins to interfere with school, sports, or other daily activities. New weakness, numbness, or breathing difficulty also requires prompt medical evaluation.

How Do Doctors Assess the Severity of Spinal Curve?

Doctors assess the severity of the spinal curve by measuring the Cobb angle on a standing side-view X-ray. They draw lines along specific vertebrae and calculate the angle where those lines meet. A larger Cobb angle indicates a higher degree of kyphosis and helps doctors determine the severity of the curve. Beyond X-rays, doctors perform a physical exam to assess how the curve affects posture, flexibility, and movement.

During the examination, doctors use the following methods to assess the spinal curve:

• Check standing posture: Observe the back from the side and behind to assess the shape and overall spinal alignment.
• Perform a forward-bend test: Ask the patient to bend forward so the doctor can see the curve more clearly.
• Check curve flexibility: Assess whether the curve can straighten with movement or remains fixed.
• Assess spinal movement: Check how comfortably the patient can bend, straighten, and rotate the spine.
• Examine muscle tightness: Identify tight hamstrings or other muscle changes that may affect movement.
• Check nerve function: Test strength, sensation, and reflexes if there are signs of nerve involvement.

What Treatment Options Can Help With a Rounded Back?

Doctors may recommend activity modification, pain-relieving medications, bracing, and routine checkups to treat a rounded back. The right kyphosis treatment approach depends on the degree of the curve, symptoms, and remaining spinal growth. However, doctors may modify the treatment plan if the spinal curve continues to worsen.

Here is how each treatment may help manage the condition:

• Regular monitoring: Doctors use periodic examinations and X-rays to track the curve as the spine grows. These follow-up appointments help identify changes that may require further treatment.
• Activity modification: Limiting activities that worsen discomfort can reduce increased stress on the affected area. But you can continue activities that do not worsen your symptoms.
• Pain-relieving medications: Over-the-counter medications, such as NSAIDs, may help reduce pain and inflammation.
• Bracing: A spinal brace may help control curve progression during growth. Doctors determine the type of brace and the wearing schedule based on the curve and skeletal maturity.

Which Spinal Curves Require a Back Brace?

Bracing may be recommended for spinal curves measuring between 45° and 60° when the spine is still growing. A PubMed review also reports that patients with curves between 50° and 80° are treated successfully with bracing. However, the recommended angle can vary depending on the curve’s progression, flexibility, symptoms, and the patient’s remaining spinal growth.

When Does a Back Curve Need Surgical Treatment?

Doctors may recommend surgery when the spinal curve continues to progress despite appropriate nonsurgical treatment. As the curve progresses, you may develop persistent pain that makes daily activities increasingly difficult. In such cases, surgery is used to correct the structural deformity, improve spinal alignment, and limit further progression.

Depending on the severity and location of the curve, doctors may recommend spinal fusion with instrumentation to correct and stabilize the spine. During this procedure, screws and rods hold the vertebrae in better alignment while the bones fuse. In more complex cases, additional techniques may be needed to improve the correction of a rigid curve. Therefore, doctors select the surgical approach based on the curve pattern, symptoms, and overall spinal alignment.

Can You Play Sports With Kyphosis?

Yes, you can play sports with kyphosis if your symptoms are controlled and the activity does not worsen your pain. Staying active can help maintain strength, flexibility, and overall fitness. However, if certain movements increase discomfort, consult your doctor before adjusting your activity level. Here is how different types of sports may affect your spine:

You may still participate in sports with a rounded back, but repeated movement and impact can increase stress on the affected area. If these activities continue to trigger your pain, simply resting and returning to the same activity may not solve the problem. At Total Orthopedics & Sports Medicine, our doctors assess how running, bending, or twisting affects your specific spinal curve. Then, we use these findings to adjust your activity level without unnecessarily limiting sports you can tolerate. If your spinal curve is limiting your ability to participate in sports, schedule an evaluation with our spine specialists today.

Can Scheuermann Kyphosis Cause Nerve Problems?

Yes, Scheuermann kyphosis can cause nerve problems, although this is rare. A severe spinal curve can reduce space around the spinal cord or nearby nerves, potentially causing compression. If the nerves are compressed, you may develop numbness, weakness, tingling, or difficulty walking, which may require prompt medical evaluation.

A study of 69 patients who underwent surgery for Scheuermann kyphosis found neurological problems in 6 patients. These problems ranged from mild sensory changes to serious spinal cord symptoms. Since the severity of these problems can vary, a neurological evaluation can help identify possible nerve or spinal cord involvement.

Can a Severe Curve Affect Breathing?

Yes, a severe curve can affect your breathing if the deformity restricts normal chest expansion. This restriction can reduce the space available for lung expansion and may gradually affect lung function. In advanced cases, reduced lung capacity may lead to breathing trouble, particularly during physical activity.

Note: Breathing problems are rare and are generally associated with very severe thoracic curves rather than normal cases of Scheuermann’s disease.

Visit Total Orthopedics & Sports Medicine to Get Expert Care for Scheuermann’s Disease! 

For a teenager with Scheuermann’s disease, a rounded back is not just a cosmetic concern. Changes in the shape and flexibility of the spine can lead to persistent back pain, stiffness, and fatigue. As these symptoms progress, sitting for long periods, exercising, playing sports, and managing everyday activities can become increasingly difficult.

At Total Orthopedics & Sports Medicine, our spine specialists first focus on reducing the pain and stiffness that can develop with Scheuermann’s disease. Then we adjust your treatment based on the activities that increase your pain, stiffness, or difficulty moving. But if your symptoms persist despite conservative care, we recommend more advanced treatment options to address ongoing pain. Call 855-321-6784 or visit our Bayonne clinic today to schedule your appointment.

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