Choosing Vertebral Body Tethering vs Fusion: The Best Option

Key Highlights

• Vertebral body tethering (VBT) is a treatment option that corrects idiopathic scoliosis while preserving the spine’s range of motion. VBT uses a flexible cord and the body’s own growth modulation to straighten the spine over time. The ideal candidate for VBT is often a growing child or teen with a flexible, moderate curve, as the procedure relies on active growth modulation. Adults, whose spines have stopped growing, may still be candidates for vertebral body tethering. Recent research findings suggest that vertebral body tethering can have similar short-term results in curve correction compared to traditional spinal fusion for idiopathic scoliosis, with the benefit of maintained range of motion due to its less rigid approach. However, long-term outcomes, potential complications, and the durability of VBT are still being studied, so ongoing research is important to determine which patients benefit most from each procedure.
• Spinal fusion is a more traditional surgery that permanently straightens the spine by fusing vertebrae, which limits flexibility.
• VBT uses a flexible cord and the body’s own growth modulation to straighten the spine over time.The ideal candidate for VBT is often a growing child or teen with a flexible, moderate curve, as the procedure relies on active growth modulation. Adults, whose spines have stopped growing, but may still be candidates for vertebral body tethering.
• The ideal candidate for VBT is often a growing child or teen with a flexible, moderate curve.
• Spinal fusion is typically recommended for more severe curves or for patients who have finished growing.

When you receive a scoliosis diagnosis, it’s natural to have many questions about what comes next. You want to find the best possible treatment to ensure a healthy, active future. For many years, spinal fusion surgery was the standard for significant curves. Today, an innovative alternative called vertebral body tethering (VBT) offers a new path. This guide will help you understand the key differences between VBT and fusion, empowering you to make an informed decision for your care. When considering VBT or fusion for scoliosis, it’s important to ask your doctor about the benefits and risks of each procedure, the recovery process, how each option may impact your flexibility and activity level, and long-term outcomes. You should also discuss whether you are a good candidate for VBT or fusion based on your age, curve severity, and overall health.

Scoliosis is a condition that causes the spine to curve sideways, often in an “S” or “C” shape. The most common type is idiopathic scoliosis, which means the exact cause is unknown. This spinal curvature typically appears during the growth spurt just before puberty.

If a spinal deformity is significant, surgery may be recommended. Understanding the different treatment options is the first step toward managing the condition effectively. Let’s look at what scoliosis is and how it has traditionally been treated.

What Is Scoliosis and How Is It Diagnosed?

Scoliosis is a sideways curvature of the spine that can develop during childhood or adolescence. Diagnosis typically involves physical examinations, medical history reviews, and imaging tests like X-rays to assess the degree of curvature and determine appropriate management options.

Traditional Approaches to Managing Scoliosis in the United States

Managing scoliosis in the United States often starts with a comprehensive evaluation by an orthopedic surgeon. Traditional approaches include options like scoliosis bracing during growth spurts, which can help reduce curve progression. In some cases, patients may resort to scoliosis surgery, particularly spinal fusion, to achieve spinal correction. Dr. Clayton J. Stitzel discusses these options in his insightful book, The Tethering Solution, emphasizing the need to explore beyond fusion. For more on surgery risks, check out this article. ScoliSMART Boot Camp and specialized scoliosis exercises offer additional paths for improvement. These programs can enhance strength and flexibility while targeting the specific needs of young patients. As the field evolves, solutions like vertebral body tethering (VBT) are gaining traction for their innovative approach to managing spinal curvature. Learning about these options empowers individuals and families in their scoliosis treatment journey. More information on VBT can be found here.

Introduction to Vertebral Body Tethering (VBT)

Vertebral body tethering, or VBT, is a groundbreaking surgical option for adolescent idiopathic scoliosis. Instead of fusing the spine, this technique uses the body’s natural growth to correct the curve. It’s often described as a form of “growth modulation.”

For many young patients, VBT offers a chance to straighten their spine without sacrificing flexibility. It stands out among treatment options as a motion-sparing alternative to traditional fusion. Below, we’ll explore how VBT works and the principle behind its success.

So, what exactly is vertebral body tethering? It’s a less invasive surgical treatment for scoliosis. The surgeon uses an anterior approach, making small incisions on the side of the chest to reach the spine. This avoids cutting through the back muscles, which is common in fusion surgery.

During the procedure, screws are placed in the vertebral bodies along the outside of the curve. A strong but flexible cord, known as a tether, is then attached to these screws. The surgeon tightens the tether, which provides an immediate partial correction of the curve.

This technique helps preserve motion because no bones are fused together. The flexible cord allows the spine to bend and twist naturally. Think of it as an internal brace that guides the spine straight as you grow, rather than locking it into a fixed position like fusion does.

The Growth Modulation Principle of VBT

The magic behind VBT is a principle called growth modulation. This concept is based on the Hueter-Volkmann law, which states that bone growth slows down under pressure and speeds up with less pressure. VBT cleverly uses this to its advantage.

By placing tension on the outer side of the spinal curve, the tether slows down growth on that side. Meanwhile, the inner side of the curve, which is under less tension, can continue to grow. This allows the spine to gradually straighten itself as a young patient grows. It’s a dynamic process that works with the body’s own spinal growth.

1. Slows growth on the convex (outer) side of the curve.
2. Allows normal growth on the concave (inner) side.
3. Guides the spine into a straighter position over time.

This is how VBT preserves motion. Unlike fusion, which stops all movement in the treated area, the tethering system allows the vertebrae to remain separate and mobile, guiding the curvature of the spine without sacrificing flexibility.

Spotlight on Dr. Clayton J. Stitzel’s “The Tethering Solution”

Navigating scoliosis treatment can feel overwhelming, but excellent resources are available to help. Dr. Clayton J. Stitzel, also known as The Scoliosis Doctor, provides invaluable scoliosis guidance in his book, “The Tethering Solution: Moving Beyond Spinal Fusion for Scoliosis.”

Discover hope, science, and real solutions—explore The Scoliosis Doctor series on Amazon and start transforming your scoliosis journey today! Download the Kindle app on your mobile device for free! Get it for iPhone. Get it for Android.

This book is a must-read for anyone considering vertebral body tethering for adolescent idiopathic scoliosis. It offers a deep dive into this innovative treatment, helping you understand if it’s the right choice. Let’s explore some key takeaways from this powerful resource.

Key Insights from the Book and Its Scoliosis Guidance

Dr. Stitzel’s book offers clear, expert scoliosis guidance for families exploring their options. It demystifies the vertebral body tethering procedure and empowers readers with knowledge. The book emphasizes a non-fusion approach that prioritizes long-term well-being and an improved quality of life.

One of the core messages is that an ideal candidate for VBT is typically a child or adolescent who is still growing. The procedure relies on future growth to achieve its full corrective potential. The book helps you understand the specific criteria, such as curve size and spinal flexibility, that surgeons consider.

Key insights from “The Tethering Solution” include:

1. Detailed explanations of how VBT achieves spinal correction without fusion.
2. Guidance on identifying if a patient is a good candidate for this scoliosis treatment.
3. Focus on the benefits of preserving motion with a non-fusion approach.
4. Real-world perspectives on achieving an improved quality of life post-surgery.

Where to Learn More and Access Dr. Stitzel’s Book

If you’re looking for comprehensive scoliosis guidance, Dr. Stitzel’s book is an excellent starting point. You can find “The Tethering Solution: Moving Beyond Spinal Fusion for Scoliosis” on Amazon. It serves as a practical guide for families navigating a scoliosis diagnosis and considering their surgical options.

Beyond the book, there are other resources available to help you build a complete treatment plan. Programs like a scoliosis bootcamp can offer intensive, non-surgical therapies that focus on exercises and active correction. These programs aim to reduce curves and improve posture without invasive procedures.

An ideal candidate for VBT is a growing adolescent with a moderate, flexible curve, but every case is unique. Exploring all your options, from non-surgical methods to innovative surgeries, is key. To learn about non-fusion options, including VBT and exercise-based programs, you can find helpful information on our blog pages about vertebral body tethering and the risks of spinal fusion.

What Is Spinal Fusion Surgery?

Spinal fusion is the most common surgical procedure for severe scoliosis. The main goal of this fusion surgery is to permanently correct the spinal curve and prevent it from getting worse. This is achieved by “welding” the curved vertebrae together.

During the surgery, metal rods, screws, and hooks are used to hold the spine in a straighter position while the bones heal into one solid piece. This method provides a powerful and stable spinal correction. Let’s look closer at how it works and why it’s chosen.

How Spinal Fusion Works for Scoliosis Correction

Spinal fusion surgery is performed under general anesthesia. The surgeon works to realign and fuse the curved vertebrae together, which stops growth in that part of the spine and prevents the spinal curve from worsening. This process involves using a bone graft.

A bone graft is material that helps stimulate bone healing. Small pieces of bone are placed in the spaces between the vertebrae that are being fused. Over time, these pieces grow together, creating a single, solid bone. Metal rods and screws are used to hold everything in place while this healing occurs.

This method results in a permanently rigid and stable section of the spine. In contrast to VBT, which uses a flexible tether to preserve motion, spinal fusion eliminates movement in the corrected segment. The goal is to create a solid, stable column of bone that will not curve again.

Spinal fusion is often recommended for several important reasons. It is a highly reliable and effective treatment for severe scoliosis, especially for curves that are greater than 45-50 degrees. For these large curves, fusion provides a strong, durable correction.

Another key reason is to stop curve progression. In cases where a curve is likely to worsen even after a person has stopped growing, fusion offers a permanent solution. It can also provide significant pain relief for individuals who experience discomfort due to their scoliosis.

Common motivations for choosing fusion include:

1. Correcting severe scoliosis: It is the gold standard for large, stiff curves.
2. Preventing further curve progression: It permanently halts the curve from getting worse.
3. Achieving better posture: The surgery can lead to a more balanced and aligned appearance.

While fusion has the major pro of being a definitive correction, its primary con is the loss of flexibility, which is a key difference when compared to VBT.

How VBT and Spinal Fusion Differ

Now that you understand the basics of both vertebral body tethering and spinal fusion, let’s compare them directly. While both aim to correct spinal curvature, their surgical technique, impact on motion, and long-term effects are quite different.

Choosing between these treatment options depends on many factors, including the patient’s age, curve severity, and lifestyle goals. Understanding these differences is essential for making the right choice for your health.

Surgical Techniques Compared

Scoliosis treatment has evolved, presenting options like spinal fusion and vertebral body tethering (VBT). In fusion surgery, metal rods and bone grafts are used to stabilize the spine by fusing vertebrae, which can reduce the range of motion. In contrast, VBT is a less invasive approach that allows for spinal growth modulation while correcting the curvature of the spine. Dr. Clayton J. Stitzel’s book, “The Tethering Solution: Moving Beyond Spinal Fusion for Scoliosis,” explores these techniques further. More information can be found here. For risks associated with spinal fusion, visit this article and learn about VBT here.

Motion Preservation: Why It Matters

Preserving range of motion is one of the most significant advantages of VBT. Because the procedure doesn’t fuse any vertebrae, the spine maintains much of its natural spinal mobility. This is crucial for anyone who wants to maintain high activity levels.

For young athletes, dancers, or anyone who enjoys being active, keeping the ability to bend and twist is a huge benefit. VBT corrects the spinal deformity while allowing you to continue participating in the activities you love without the stiffness associated with fusion.

Spinal fusion, on the other hand, purposely eliminates motion in the corrected part of the spine. While patients can still lead active lives, the fused segment will be permanently stiff. VBT preserves motion by using a flexible tether that acts like an internal brace, guiding the spine straight instead of locking it in place.

Long-Term Implications of Fusion vs. Tethering

When thinking about the long term, the implications of each surgery are important to consider. With VBT, the goal is to manage the curve while allowing for a more natural-feeling spine. Many patients report an improved quality of life due to preserved flexibility and the ability to return to a high level of activity.

Spinal fusion provides a definitive stop to curve progression. The trade-off is the permanent stiffness in the fused portion of the spine. While most people adapt well, some find it takes time to get used to the new limitations, and they may need to adjust how they perform certain activities.

Key long-term differences include:

1. Flexibility: VBT aims to maintain spinal motion, while fusion eliminates it in the treated area.
2. Activity: VBT patients often return to sports with fewer restrictions compared to fusion patients.
3. Future Surgeries: VBT has a risk of the tether breaking or the curve overcorrecting, which might require another operation. Fusion is generally a one-and-done correction.

Motion Preservation with Vertebral Body Tethering

One of the biggest draws of vertebral body tethering is its ability to preserve spinal mobility. Unlike fusion, VBT is designed for patients who have not yet reached skeletal maturity, using their remaining growth to help correct spine curves.

This approach offers a unique advantage for young, active individuals. It allows them to maintain flexibility while still achieving significant curve correction. Let’s look at what daily life and activities are like after VBT.

Daily Life After VBT: Activities and Flexibility

After recovering from VBT, patients typically enjoy an impressive range of motion. Because the vertebrae are not fused, the spine can bend, twist, and move in a much more natural way. This is a game-changer for daily activities and sports.

Many patients return to high-level activities like gymnastics, dance, and swimming without feeling restricted by their surgery. Physical therapy after the procedure helps restore strength and confidence in movement. As spinal growth continues, the tether works to guide the spine into a position with better posture.

VBT preserves motion in several ways:

1. It uses a flexible cord instead of rigid rods.
2. It keeps the vertebral discs mobile and healthy.
3. It avoids creating a solid block of bone in the spine. This allows for a level of flexibility that simply isn’t possible with a spinal fusion.

How Spinal Fusion May Affect Spinal Mobility

Spinal fusion surgery has a very different impact on mobility. The purpose of the surgery is to create a solid, immovable segment of bone to correct the curve. This means the fused section of your spine will be permanently stiff.

While the procedure is excellent for pain relief and stopping curve progression, the loss of flexibility is a significant factor to consider. Patients can still live full, active lives, but they may need to adapt certain movements. For example, bending will happen from the unfused parts of the spine, primarily the hips and lower back.

Compared to VBT, which preserves motion by design, fusion surgery sacrifices flexibility for stability. This is a key trade-off that influences a patient’s quality of life and is a central part of the decision-making process between the two procedures.

Who Is an Ideal Candidate for VBT or Fusion?

Deciding between VBT and fusion depends heavily on who the patient is. Factors like age, skeletal maturity, and curve size are critical in the evaluation process. There is no one-size-fits-all answer, and the right treatment plan is tailored to the individual.

Generally, VBT is geared toward young patients who are still growing, while fusion is often the better choice for those with larger curves or who have finished growing. Let’s break down the specific factors that doctors consider.

Age and Skeletal Maturity Factors

Age and skeletal maturity are perhaps the most important factors when considering VBT. This procedure is designed for skeletally immature patients, meaning children and teens who still have a good amount of growing to do. The surgery relies on the remaining growth spurt to help straighten the spine.

Young patients, typically between the ages of 10 and 14, are often ideal candidates. A surgeon will assess skeletal maturity using X-rays of the hand or pelvis to determine how much growth is left. If a patient is too young and has too much growth remaining, there’s a risk of overcorrection.

If a patient is close to being fully grown, there may not be enough growth left for the tether to be effective. In these cases, spinal fusion might be a more predictable and suitable option. Therefore, the “sweet spot” for VBT is a patient with a moderate curve and just the right amount of growth remaining.

Curve Size and Location Considerations

The size and location of the spinal curve also play a big role in determining candidacy for VBT. This procedure is generally recommended for moderate curves, typically between 40 and 65 degrees. Curves smaller than this might be managed with bracing, while very large and stiff curves may not be correctable with a flexible tether.

The location of the curve matters, too. VBT was initially used mainly for curves in the thoracic spine (the upper and mid-back). However, experienced surgeons now also use it for curves in the lumbar spine (the lower back) or for double curves.

The flexibility of the curve is another key consideration. An ideal candidate has a curve that is still flexible, meaning it can be partially straightened when bending. A surgeon will assess this with special X-rays. The combination of a flexible, moderate curve in a growing patient makes for an excellent VBT candidate.

The ScoliSMART Approach as a Non-Fusion Option

Beyond surgery, there are effective non-fusion options to explore. The ScoliSMART approach is a proactive scoliosis treatment that uses targeted exercises and innovative tools to manage and reduce spinal curves without surgery.

This method combines genetic testing, nutritional support, and specific physical therapy activities. It is designed to retrain the brain and muscles to correct posture and reduce the progression of scoliosis. Let’s look at the core principles of this unique approach.

Core Principles of the ScoliSMART Method

The ScoliSMART method is a multi-faceted scoliosis treatment that addresses the root cause of the curve, not just the symptoms. Unlike traditional physical therapy, it uses targeted exercises designed to create new muscle memory and automatically improve posture. It’s an active, not passive, approach.

This method is a powerful non-fusion option for those looking to avoid or delay surgery. It is suitable for patients with various medical conditions and curve sizes, offering a personalized plan based on individual needs. The goal is to empower your body to correct itself.

Core principles of ScoliSMART include:

1. Neurotransmitter testing to identify underlying imbalances.
2. Targeted exercises to retrain postural reflexes.
3. Nutritional support to aid the body’s corrective process.
4. Use of tools like the ScoliSMART Activity Suit to enhance results.

Integration of Bracing and Targeted Exercises

The ScoliSMART approach effectively integrates modern scoliosis brace technology with targeted exercises. Unlike traditional rigid braces that simply hold a curve, the ScoliSMART program may use dynamic bracing that encourages active correction and muscle engagement.

This combination of bracing and specialized physical therapy works to actively reduce the curve, not just stop its progression. Programs like the Scoliosis Boot Camp provide intensive, one-on-one training to jumpstart the corrective process and teach patients the scoliosis exercises they can continue at home.

The ultimate goal is to achieve an improved quality of life by reducing the curve and improving posture without the need for invasive surgery. This integrated, non-fusion approach offers a compelling alternative for many patients who want to take control of their scoliosis treatment.

Benefits and Drawbacks of Vertebral Body Tethering

Like all treatment options, vertebral body tethering comes with its own set of benefits and drawbacks. Its main advantage is using growth modulation to correct the spine while preserving natural movement, which is a huge plus for active young people.

However, it’s also important to be aware of the potential risks and limitations. Understanding both sides will help you weigh whether VBT is the right path for you or your child. Let’s examine the pros and cons more closely.

Advantages in Preserving Spine Motion and Growth

The biggest advantage of vertebral body tethering is its ability to preserve motion. By avoiding fusion, VBT allows the spine to maintain its natural range of motion, which is a major pro for anyone concerned about stiffness. This is especially beneficial for athletes and dancers.

The principle of growth modulation is another key benefit. The procedure harnesses the body’s own spinal growth to help straighten the curve over time. This means the spine can continue to grow taller, which is important for overall development and lung function.

Key advantages include:

1. Preservation  of flexibility: The spine can bend and twist naturally.
2. Continued spinal growth: The tether allows the vertebrae to grow, unlike fusion which halts growth.
3. Less invasive approach: VBT often involves smaller incisions and less muscle disruption compared to posterior fusion.

Possible Risks and Limitations of VBT

While vertebral body tethering is promising, it does have some risks and limitations. One of the main concerns is the possibility of tether breakage. The flexible cord can sometimes break, which may require another surgery to fix. This is a disadvantage compared to the solid permanence of fusion.

Another risk is overcorrection. Because the procedure relies on growth, there’s a chance the tether could work too well in a patient with a lot of growth left, causing the spine to curve in the opposite direction. There are also general surgical risks, like infection, that apply to any operation.

The biggest limitation is patient selection. VBT is only suitable for a specific group of patients—those who are still growing and have a moderate, flexible curve. It is not an option for everyone, and if the curve progression is too severe, fusion may still be the necessary choice.

Advantages and Disadvantages of Spinal Fusion

Spinal fusion is a time-tested surgical treatment with a long history of successful patient outcomes. Its main advantage is its reliability in providing a strong, permanent correction for scoliosis curves, especially severe ones.

However, this surgical treatment also has disadvantages, primarily related to its long-term effects on spinal mobility. Understanding both the positive results and the potential concerns is crucial when considering this option. Let’s review the pros and cons.

Typical Results and Patient Outcomes

Spinal fusion surgery is highly effective at achieving its primary goals. Patient outcomes consistently show a significant and permanent curve correction. For patients with large, progressing curves, fusion can be life-changing by preventing further deformity and related health issues.

After an initial recovery period where pain medication is needed, most patients report that their back pain is better than it was before the fusion surgery. The procedure leads to an improved quality of life for many by providing stability and a more balanced posture.

Pros of spinal fusion include:

1. Definitive curve correction: It reliably straightens the spine and stops progression.
2. High success rate: It’s a proven procedure for severe scoliosis.
3. Pain reduction: Many patients experience less back pain long-term.

Potential Concerns and Long-Term Effects

The main concern with spinal fusion surgery is the permanent loss of flexibility. The fused section of the spine becomes a solid block of bone and can no longer bend or twist. This is the primary disadvantage when compared to VBT.

While many patients adapt well and return to high activity levels, some find the stiffness challenging. The loss of motion in one area can also put extra stress on the unfused vertebrae above and below the fusion, which could potentially lead to issues later in life.

Although fusion surgery provides excellent pain relief for many, the recovery can be more intensive than with VBT. The long-term effect on mobility is the biggest trade-off for the stability and correction that fusion provides, making it a crucial point of discussion with your surgeon.

Indications for Thoracic Tethering Over Fusion

The decision between vertebral body tethering and spinal fusion often depends on the specific location of the curve. For curves in the thoracic spine (the upper and mid-back), VBT has become an increasingly popular alternative to fusion.

The main driver for choosing tethering in this area is the desire to preserve motion and allow for continued growth. Let’s look at when surgeons might recommend VBT for thoracic curves and when fusion remains the better option.

When Surgeons Recommend VBT for Thoracic Curves

Surgeons are increasingly recommending vertebral body tethering for curves in the thoracic spine, especially for younger patients. The main indication is a flexible thoracic curve of a moderate size (around 40-65 degrees) in a patient who is still growing.

VBT is seen as a particularly effective treatment in this area because it can correct the curve without stiffening a large portion of the upper back. Preserving motion in the thoracic spine is beneficial for breathing mechanics and overall flexibility, allowing for a more active lifestyle post-surgery.

Reasons to choose VBT for thoracic curves include:

1. The patient is skeletally immature with remaining growth.
2. The curve is flexible and falls within the moderate range.
3. The goal is to maintain motion for sports or other activities. For these patients, VBT offers a chance to avoid the rigidity of fusion.

Cases Where Spinal Fusion Remains the Preferred Choice

Spinal fusion surgery remains the gold standard in certain situations, even for thoracic curves. One of the main indications for choosing fusion over tethering is the severity of the curve. For very large or severe curves (often over 65-70 degrees), the tether may not be strong enough to provide adequate correction.

Another key factor is skeletal maturity. If a patient has already completed most or all of their growth, VBT will not be effective because it relies on growth to work. In these cases, spinal fusion is the more reliable and predictable option for correcting the curve.

Certain medical conditions or very rigid curves also make fusion the preferred choice. If a curve does not show flexibility on bending X-rays, fusion is better suited to achieve a straight and stable spine.

Recovery Expectations: VBT vs Spinal Fusion

The recovery timeline and postoperative experience can be quite different for vertebral body tethering compared to spinal fusion. VBT is generally considered less invasive, which can lead to a faster initial recovery.

Factors like the length of the hospital stay, the need for pain medication, and the time it takes to return to school and activities vary between the two procedures. Let’s compare the typical recovery expectations for each.

Postoperative Experience After VBT

The postoperative experience after vertebral body tethering is often reported as being smoother than with fusion. Since the surgery is done through small incisions on the side, there is less muscle disruption. This can lead to a shorter hospital stay, typically around 3 to 4 days.

Pain is managed with medication, but many patients find they need less pain relief compared to those who undergo fusion. The recovery focuses on gradually returning to normal activities. While there will be some restrictions initially, patients are often encouraged to walk and move around soon after the spinal surgery.

The quicker recovery and preservation of motion contribute to a high quality of life for many VBT patients. Most can return to school in a few weeks and get back to non-contact sports within a couple of months, which is generally faster than the recovery from spinal fusion.

Typical Recovery Timeline Following Spinal Fusion

The recovery timeline following spinal fusion surgery is typically more extensive. The postoperative experience involves a hospital stay of around 3 to 4 days, but the initial discomfort can be more significant due to the larger incision and muscle manipulation.

Strong pain medication is necessary for the first few weeks. Most teens miss about 4 to 6 weeks of school to allow for adequate healing. During this time, activities like heavy lifting and excessive bending are restricted to protect the fusing spine.

Here is a general recovery timeline:

1. 4-6 weeks: Return to school.
2. 2-6 months: Gradual return to light activities and non-contact sports.
3. 6-12 months: The fusion is typically solid, allowing a return to unrestricted activity levels, including contact sports. This timeline is generally longer than what is expected for VBT.

Effectiveness and Outcomes: VBT vs Fusion

When it comes to effectiveness, both vertebral body tethering and spinal fusion can achieve excellent results, but they measure success differently. Spinal fusion aims for a maximum, permanent curve correction, while VBT aims for a significant correction that preserves motion.

Patient satisfaction for both treatment options is often high, but for different reasons. The best choice depends on the individual’s priorities, whether they value complete correction and stability or flexibility and a faster recovery.

Results in Curve Correction and Patient Satisfaction

In terms of pure curve correction, spinal fusion is highly effective and considered the gold standard for creating a straight spine. It can significantly reduce even very large curves, and the results are permanent.

Vertebral body tethering also achieves impressive curve correction. Studies show it can reduce a curve by about half over a couple of years, with many patients achieving a final curve of less than 25 degrees. The patient outcomes are very promising, with most VBT patients avoiding fusion altogether.

How they compare:

1. Spinal Fusion: Provides a more powerful, immediate correction, especially for large, stiff curves.
2. Vertebral Body Tethering: Offers significant correction that continues to improve with growth, while preserving motion.
3. Patient Satisfaction: Is high for both, with fusion patients valuing the stability and VBT patients valuing the flexibility.

Exploring Quality of Life and Activity Levels

Quality of life after surgery is a crucial measure of success. For many patients, the ability to maintain high activity levels is a top priority. After VBT, patients often return to all their favorite activities, including those that require a great deal of flexibility, with few to no restrictions.

Following spinal fusion, most patients also return to active lives. However, the fused part of the spine will always be stiff. While this is well-tolerated by many, it can be a limitation for certain sports or movements. The goal of both surgeries is pain relief and a better quality of life through curve correction.

Ultimately, VBT is often seen as more effective for patients who prioritize maintaining a “normal” feeling spine with full mobility. Fusion is more effective for those who need the most powerful and permanent correction available, accepting the trade-off of reduced flexibility.

Click on the Scoli-Fact to see the rest of the Scoliosis Facts!

Special Considerations for Adults and Teenagers

The ideal surgical approach for scoliosis can vary greatly between adults and teenagers. Vertebral body tethering is designed specifically for growing adolescents, while spinal fusion is a viable option for both teens and adult patients.

Understanding the differences in candidacy is key. The factors that make someone a good candidate for VBT as a teen are the very same factors that often rule it out for adults. Let’s explore these special considerations.

Candidacy for VBT in Adult Patients

A common question is whether adults can undergo vertebral body tethering. The simple answer is generally no. VBT relies on the principle of growth modulation, which means it needs remaining spinal growth to work. Adult patients have reached skeletal maturity, so their spines are no longer growing.

Without growth, the tether cannot guide the spine into a straighter position. It would simply act as a flexible restraint without providing further correction. For this reason, VBT is not an FDA-approved or standard spinal surgery for the adult population.

For adult patients with scoliosis that requires surgery, spinal fusion is the most common and effective treatment. It provides a stable, permanent correction that does not depend on growth. Therefore, VBT is considered a procedure exclusively for children and teens.

Unique Factors for Teens and Growing Adolescents

Teens and growing adolescents with adolescent idiopathic scoliosis are in a unique position. They have enough spinal maturity to handle surgery but still have enough growth left for a procedure like VBT to be effective. This is why they are the primary candidates for growth modulation techniques.

The timing is critical. A surgeon must carefully assess whether a teen has too much growth left (risking overcorrection) or not enough. This “Goldilocks” window is why a thorough evaluation, including bone age studies, is so important.

Key factors for this age group include:

1. Growth Potential: They must have enough remaining growth for VBT to work.
2. Curve Flexibility: Their curves are often more flexible than those in adults.
3. Active Lifestyles: Preserving motion is often a high priority for this age group. These factors make VBT an exciting option for teens, while it remains unsuitable for adults.

Conclusion

In conclusion, understanding the differences between vertebral body tethering (VBT) and spinal fusion for scoliosis treatment is crucial for patients and caregivers. VBT offers a more motion-preserving alternative that could lead to better long-term outcomes for many individuals, especially the younger population. As highlighted in Dr. Clayton J. Stitzel’s insightful book, “The Tethering Solution,” there are alternatives to traditional treatments that prioritize growth modulation and patient quality of life. To dive deeper into this topic and explore the advantages of VBT, be sure to check out Dr. Stitzel’s book here. Additionally, for more detailed insights on the risks of spinal fusion and the benefits of VBT, visit this article and this article to further inform your decision-making process.

Frequently Asked Questions

Can adults choose vertebral body tethering instead of fusion?

Yes, adults can opt for vertebral body tethering (VBT) as an alternative to spinal fusion. VBT offers a less invasive option that allows for spinal growth and flexibility, making it suitable for certain cases of scoliosis in adults seeking effective treatment without permanent fusion.

Is the ScoliSMART approach effective as a non-fusion treatment?

The ScoliSmart approach focuses on individualized treatment plans, emphasizing targeted exercises and posture correction. Many patients report improved spinal alignment and reduced pain without surgery. However, effectiveness varies; consulting with a specialist can help determine if this method suits one’s needs.

What are the long-term outcomes for VBT compared to spinal fusion?

Long-term outcomes for VBT (Vertebral Body Tethering) generally show significant curve correction and improved flexibility compared to traditional spinal fusion. Patients often experience less pain and a quicker recovery. However, ongoing monitoring is essential to assess potential complications over time.