Scoliosis: An Overview
Scoliosis is a spinal deformity that causes the spine to curve sideways (either to the right or left), creating an S or C shape in a three-dimensional view. When viewed from behind, the spine of someone without scoliosis appears straight, but individuals with scoliosis develop an abnormal curve.
What is Scoliosis (Spinal Curvature)?
Scoliosis is defined as a spinal deformity where the spine curves 10 degrees or more to the right or left, resulting in an S or C shape visible on an X-ray. This curvature can occur on both sides of the spine and at different locations along it. In children and adolescents, scoliosis is often termed idiopathic, meaning the cause is unknown, although several factors may contribute to its development.
A specialist diagnoses scoliosis by performing a physical examination and taking X-rays. Children and teenagers with mild curves need regular check-ups, while those with severe curvatures might require treatment to prevent lung complications. Orthopedic specialists work with patients to prevent the curve from worsening.
Types of Scoliosis Curves
Scoliosis curves are categorized as major and minor. The apex refers to the vertebra that has rotated the most from the vertical axis and is furthest from the midline. Scoliosis is classified based on the location of this apex:
- Cervical scoliosis: Apex in the neck
- Lumbar scoliosis: Apex in the lower back
- Thoracic scoliosis: Apex in the upper back
In some cases, scoliosis can affect multiple areas, such as thoracolumbar scoliosis, where both the thoracic and lumbar regions are involved. Thoracic scoliosis is the most common type.
Degrees of Scoliosis Progression
Scoliosis can remain stable, progress, or rarely, improve. Progression is determined by tracking changes in curve angles over consecutive examinations.
- Curves over 20 degrees: A 5-degree or more increase signals progression.
- Curves below 20 degrees: A 10-degree increase is considered progression.
- Curves over 30 degrees: Progression is more likely, especially if diagnosed before age 10 or in females.
Chronological Classification of Scoliosis
- Infantile scoliosis: Ages 0–2
- Juvenile scoliosis: Ages 3–9
- Adolescent scoliosis: Ages 10–17
- Adult scoliosis: Ages 18 and above
Types Based on Location
Scoliosis can be further classified by the affected spinal region:
- Cervical vertebrae
- Cervicothoracic junction
- Thoracic vertebrae
- Thoracolumbar junction
- Lumbar vertebrae
Angular Classification
Medical imaging is used to diagnose scoliosis based on the angle of curvature:
- Angles below 10 degrees: Known as “spinal asymmetry,” these do not affect health.
- Angles of 10–20 degrees: Patients should be monitored to prevent progression.
- Angles of 20–40 degrees: Seen mainly during adolescence; physical therapy, exercises, and bracing are effective.
- Angles over 40 degrees: The curve is often stable, but surgery may be needed if the angle exceeds 45–50 degrees.
Symptoms of Scoliosis
The primary signs of scoliosis include:
- One shoulder blade more prominent than the other
- Uneven hips
- A ribcage that sticks out more on one side
- Visible changes in spinal shape
- Back pain (in advanced stages)
- Difficulty sitting or standing straight
- Head not aligned with the rest of the body
- Asymmetry when bending forward, with one side of the back higher
- Uneven rib appearance from the front or back
These symptoms may also resemble other spinal conditions or result from injury or infection.
Causes of Scoliosis
Scoliosis often develops during childhood or adolescence, though its exact cause remains unclear. Several factors may play a role:
- Genetics
- Hormonal imbalances
- Cellular abnormalities
In some children, scoliosis can develop due to other underlying conditions:
- Congenital factors: Abnormal spinal development in the womb
- Genetic disorders
- Spinal injuries
- Neuromuscular diseases: Affecting the nerves controlling muscles
- Tumors: Causing physical changes in the spine
Diagnosis of Scoliosis
Diagnosis involves a physical examination, a review of medical and family history, and X-rays. Doctors may refer patients to orthopedic specialists who use the Cobb angle to measure the degree of curvature. This angle helps determine the treatment plan and monitor the progression of scoliosis.
Treatment of Scoliosis
Treatment depends on the severity of the curve and includes both non-surgical and surgical options.
Non-Surgical (Conservative) Treatment
- Bracing: Prevents the curve from worsening but does not correct it.
- Exercises: Tailored programs, including methods like Bobath, Vojta, and Katharina Schroth, focus on stretching and strengthening.
- Pain relief: Over-the-counter or prescription painkillers can help manage symptoms.
For children with mild curves under 15 degrees, regular monitoring is recommended. Curves of 15–20 degrees require specialized exercises, while curves over 25 degrees need intensive rehabilitation.
Surgical Treatment
Surgery is typically considered for curves exceeding 50 degrees or when conservative treatment fails.
- Posterior approach: Surgery through the back to correct the curve and stop progression.
- Anterior approach: Involves accessing the spine through the chest, providing better cosmetic results but requiring post-operative bracing.
Surgery aims to restore spinal alignment, relieve pain, and prevent further progression. Advanced imaging and surgical tools help minimize complications, though lifelong follow-ups are necessary.
Pediatric Scoliosis Treatment
During puberty, when growth spurts occur, scoliosis can progress rapidly. Treatment plans focus on growth monitoring and using braces for high-risk cases. Braces must be worn 16–23 hours a day until growth is complete. If the curve reaches 50 degrees or more, surgery may be required.
Degenerative Scoliosis in Adults
Adults with degenerative scoliosis benefit from physical therapy, stretching exercises, and short-term bracing. Over-the-counter painkillers and nerve-blocking injections offer temporary relief. If these methods are ineffective, surgery may be the best option.
Summary of Scoliosis Treatments
- Monitoring spinal curvature
- Bracing
- Scoliosis exercises
- Pain relief medication
- Surgery
Post-Surgery Considerations
After scoliosis surgery, spinal mobility may be limited. The anterior approach requires post-operative bracing but offers better cosmetic outcomes by hiding scars under the arm.
The success rate of scoliosis surgery is high, but patients should be aware of potential risks:
- Infections: Treated with antibiotics
- Bleeding complications: Managed with drainage
- Implant failures: May require a second surgery
- Nerve damage: Rare and usually reversible
Frequently Asked Questions
How long do people with scoliosis live?
Life expectancy is generally unaffected if scoliosis is treated, though untreated scoliosis can lower quality of life.
How is scoliosis detected?
It is identified by asymmetries in the spine, uneven hips, or a protruding ribcage.
Can scoliosis cause paralysis?
Severe scoliosis may carry a small risk of paralysis if untreated.
What sports benefit scoliosis?
Swimming and shoulder exercises are beneficial for improving spinal flexibility.
