Pediatric Scoliosis

Pediatric scoliosis often develops gradually and may not cause pain, especially in the early stages. For that reason, it is frequently first noticed by a parent, caregiver, or pediatrician during a routine exam rather than by the child. The most common signs are related to visible changes in posture and body alignment.

One of the earliest indicators is uneven shoulders, where one shoulder appears higher than the other. The shoulder blades may also look asymmetrical, with one sticking out more prominently. Another common sign is uneven hips or a waistline that appears tilted. Clothing may hang unevenly, and pant legs or shirt sleeves may not align properly.

When a child bends forward, a noticeable rib hump or prominence on one side of the back may become visible. This occurs because the spine’s rotation pushes the ribs outward. In more advanced cases, the entire trunk may appear shifted to one side.

Although scoliosis is often painless, some children and adolescents may report back discomfort, particularly with larger curves. Fatigue in the back muscles can also occur as the body works harder to maintain balance. Severe curves, which are less common, may affect the chest cavity and lead to shortness of breath or reduced exercise tolerance.
Because symptoms can be subtle, regular physical examinations are essential during growth years. Detecting scoliosis early allows for closer monitoring and timely intervention if needed.

The cause of pediatric scoliosis depends on the type. In most cases, particularly adolescent idiopathic scoliosis, the exact cause is unknown. “Idiopathic” means that there is no identifiable underlying condition explaining the curvature. Despite this, research suggests that genetics may play a role, as scoliosis can run in families.

Congenital scoliosis is present at birth and results from abnormal development of the vertebrae during fetal growth. In this type, the bones of the spine may be misshapen or fused together, leading to curvature as the child grows. These structural abnormalities can cause the spine to curve and progress more rapidly than other forms.

Neuromuscular scoliosis is associated with conditions that affect the muscles and nerves, such as cerebral palsy, muscular dystrophy, or spinal cord abnormalities. In these cases, muscle imbalance or weakness prevents the spine from maintaining proper alignment, leading to curvature over time. This form of scoliosis often progresses and may require more complex management.

Another less common category is syndromic scoliosis, which occurs as part of a broader genetic or developmental condition. Disorders such as Marfan syndrome or Down syndrome can include scoliosis as one of several features.

It is important to understand that scoliosis is not caused by poor posture, carrying heavy backpacks, or participation in sports. These factors may influence comfort but do not create the structural curvature seen in scoliosis.

Diagnosis of pediatric scoliosis begins with a thorough physical examination. A physician will assess the child’s posture, looking for asymmetry in the shoulders, hips, and spine. One of the most common screening methods is the forward bend test, where the child bends at the waist while the examiner observes for unevenness in the back or rib cage.

If scoliosis is suspected, imaging is used to confirm the diagnosis and measure the severity of the curve. Standard X-rays are the primary tool for evaluation. These images allow the physician to calculate the degree of curvature, known as the Cobb angle. The Cobb angle helps determine the severity of scoliosis and guides treatment decisions.

Mild curves are generally defined as less than 20 degrees, moderate curves fall between 20 and 40 degrees, and severe curves are greater than 40 to 50 degrees. The rate of progression is also an important factor, particularly in growing children. A smaller curve in a rapidly growing child may require closer observation than a similar curve in a child who has nearly completed growth.

In some cases, additional imaging such as MRI may be recommended. This is typically done when there are atypical features, neurological symptoms, or concerns about underlying spinal cord abnormalities. MRI provides detailed images of the spinal cord and surrounding structures, helping to rule out other conditions.

Growth assessment is another critical part of diagnosis. Physicians evaluate skeletal maturity using indicators such as growth patterns, bone development, and physical milestones like the onset of puberty. This information helps predict how much growth remains and the likelihood that the curve will progress.

Regular follow-up is often necessary once scoliosis is diagnosed. Children with mild curves may be monitored with periodic exams and X-rays to track any changes. Early and accurate diagnosis allows for appropriate planning and reduces the risk of significant progression.