What is scoliosis?
Scoliosis is a sideways curve of the spine that shows up as an “S” or “C” shape rather than a straight line down the back. This back condition can occur in children, adolescents and adults. According to the American Academy of Orthopedic Surgeons, approximately 2% of the population has scoliosis.
Scoliosis symptoms vary with age and severity of the curvature. Many people have some degree of curvature of the spine, yet experience little or no discomfort. Those with more severe scoliosis may experience back pain, disfigurement and nerve compression that can cause numbness, weakness and leg pain, especially upon standing or walking.
Scoliosis symptoms
Scoliosis can be a hidden disorder with no obvious symptoms, or it can cause severe disfigurement, pain and disability. Some patients can live with undetected scoliosis for many years until their curve starts to increase, often resulting in pain. Some common scoliosis symptoms include:
- Idiopathic scoliosis – This literally means “of undetermined cause.” This type of scoliosis is thought to be genetic, involving involves multiple genes and a concept called variable penetrance meaning. This means that in each generation, there is variability in how severe the spine curve is.
- Infantile idiopathic scoliosis – Scoliosis that occurs from birth to 3 years of age.
- Juvenile idiopathic scoliosis – Scoliosis that occurs from 3 to 10 years of age.
- Adolescent idiopathic scoliosis – Scoliosis that occurs from 10 to 18 years of age. This is the most common scoliosis diagnosis in children, representing nearly 90% of scoliosis cases.
- Adult idiopathic scoliosis – Scoliosis that occurs at 18 years and older.
Scoliosis causes and risk factors
Many physicians don't know what causes the most common type of scoliosis, although hereditary factors and environmental factors, like injuries such as spinal cord injuries, may come into play.
Family history
Scoliosis is thought to be genetic and tends to run in families. However, with each generation, there is a variability of how strongly the genes that cause scoliosis are expressed, which determines how severe the spine curve may be. For example, a mother may have a mild curve, but her daughter may have a very severe curve, or a mother may have a severe curve, and her grandchildren may develop scoliosis, but their parents did not.