Overview
Scoliosis is a medical condition defined as a three-dimensional deformity of the spine where the spinal column develops an irregular sideways curve. While a healthy spine appears straight when viewed from behind, the spine of an individual with this condition may appear C- or S-shaped. This condition primarily affects the alignment of the vertebrae, the bones that form the backbone, and can lead to visible changes in the symmetry of the trunk and shoulders.
The condition is generally categorised based on the age of onset and the underlying cause. The most frequent form is Adolescent Idiopathic Scoliosis (AIS), which typically appears during the growth spurt just before puberty. Other forms include congenital scoliosis, which is present from birth due to vertebral malformations, and neuromuscular scoliosis, which arises from conditions that affect the nerves and muscles supporting the spine. In older individuals, degenerative scoliosis can occur as a result of age-related changes in the spinal discs and joints.
Causes and Risk Factors
In the majority of cases, the condition is classified as idiopathic, meaning there is no known single cause. Research suggests that it is multifactorial, involving a combination of genetic and environmental factors. It frequently runs in families, and individuals with a family history of spinal disorders may have a higher risk of developing a curve.
There are several medical factors associated with non-idiopathic forms. Congenital cases result from a failure of the spine to form or segment properly during fetal development. Neuromuscular cases are often linked to conditions such as cerebral palsy or muscular dystrophy, where the loss of muscular control leads to the spine being pulled in abnormal directions.
It is a common misconception that lifestyle factors cause the condition. Medical evidence confirms that scoliosis is not caused by:
- Carrying heavy school bags on one shoulder.
- Poor standing or sleeping postures.
- Specific physical activities or sports.
- A lack of calcium in the diet.
Symptoms
Many individuals with this condition, particularly adolescents, may not experience any pain or physical discomfort. The signs are often purely visual and may include:
- Uneven shoulder heights or one shoulder blade appearing more prominent.
- An asymmetrical waistline or one hip appearing higher or sticking out more than the other.
- A visible tilt of the body to one side.
- Unequal gaps between the arms and the trunk when standing.
- Clothes that do not fit properly or hang unevenly.
Symptoms can vary significantly between individuals. While most adolescents are otherwise healthy, adults with the condition are more likely to experience back pain that radiates to the limbs. In severe and untreated cases, the curvature may eventually affect respiratory or cardiac function due to the rotation and compression of the rib cage.
Red-flag symptoms that require urgent medical evaluation include:
- Back pain that is well-localised, constant, and progressively worsening.
- Weakness, numbness, or clumsiness in the upper or lower limbs.
- Any loss of bladder or bowel control.
Diagnosis
Healthcare professionals in Singapore typically assess the condition through a combination of physical examination and imaging. Assessment often begins with a visual inspection of the back to check for asymmetry in the shoulders, waist, and trunk.
A primary screening tool is the Adam’s Forward Bend Test. During this test, the individual is asked to bend forward at the waist with their palms together and knees straight. This position allows the professional to observe for a “rib hump” or any prominence on one side of the back, which indicates spinal rotation. A scoliometer may be placed on the back during this test to measure the degree of trunk rotation.
If a curve is suspected, full-length standing radiographs are used to confirm the diagnosis and assess the severity of the deformity. These images allow the specialist to measure the alignment and determine the maturity of the bones. Many orthopaedic centres now utilise advanced low-dose imaging, such as the EOS system. This technology provides high-quality spinal visualisations with significantly less radiation exposure than conventional X-rays, making it a safer option for patients who require regular monitoring during their growth period.
Treatment Options
Treatment is highly individualised and depends on the patient’s age, skeletal maturity, and the severity of the curve. The primary goals are to prevent the deformity from worsening and to achieve a balanced spine.
Observation and Monitoring For individuals with minor curves, a strategy of “watchful waiting” is often adopted. This involves regular clinical examinations and follow-up imaging at set intervals to monitor for any progression as the child grows.
Bracing Bracing is a common non-surgical treatment for moderate curves in children who are still undergoing significant growth. The aim of a brace is to halt the progression of the curve and potentially avoid the need for surgery. Braces are custom-made for each patient and are typically worn for many hours throughout the day. Specialist orthotists work with the patient to ensure the brace is fitted correctly and maintained for optimal effectiveness.
Physiotherapy and Rehabilitation Specific exercises may be recommended to improve core muscle strength, stabilisation, and posture. While exercises alone do not correct the spinal curve, they can be beneficial in supporting the corrected posture and maintaining overall physical health.
Surgical Treatment Surgery is generally considered for severe curves or those that continue to progress despite conservative treatment. The standard surgical approach is spinal fusion, where rods and screws are used to stabilised the spine and encourage the vertebrae to fuse into a straighter alignment. Newer, fusion-less methods like vertebral body tethering may also be considered for suitable candidates who have remaining growth potential.
Prevention and Lifestyle Management
There is currently no known method to prevent the onset of idiopathic scoliosis. However, maintaining a healthy lifestyle is essential for overall spinal support and bone health.
- Dietary Considerations: A balanced diet rich in calcium and essential nutrients is vital for growing children. Recommended foods include milk, spinach, anchovies, and wholemeal products.
- Exercise Guidance: Regular physical activity that focuses on core strengthening—such as swimming, planks, and stretching—can help support the muscles surrounding the spine.
- Posture and Ergonomics: Maintaining good body mechanics during daily activities, such as sitting at a desk or carrying items, is beneficial for long-term comfort.
- Practical Considerations: For those wearing a brace, practical steps like wearing a snug cotton undergarment to protect the skin and cleaning the brace regularly are important for daily management.
When to Seek Medical Attention
Early detection is key to achieving the best possible outcomes for spinal health. It is important to monitor children and adolescents for the visual signs of asymmetry mentioned above.
You should consult a healthcare professional if you notice:
- Persistent or worsening visual changes in the alignment of the shoulders or back.
- Constant back pain that does not improve with rest.
- Progressive weakness, numbness, or tingling in the limbs.
- Any symptoms following a significant injury or trauma to the back.
- Loss of bladder or bowel control, which requires immediate medical evaluation.
If symptoms persist or worsen, it is advisable to consult a qualified healthcare professional for proper evaluation.
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Disclaimer This page is for general educational purposes only and should not be considered medical advice. Please consult a qualified healthcare professional for personalised assessment and treatment.
