Spina bifida is a complex congenital condition affecting the spine, which results from the incomplete closing of neural tube during embryonic development. This defect can cause varying degrees of neurological and musculoskeletal impairment depending on its severity and location along the spinal cord.
What is Spina Bifida?
The term « spina bifida » translates to « cleft in the spine. » In fact, it refers to a group of congenital conditions characterized by incomplete closure of the vertebral column, which encompasses several types. The neural tube’s spinazonke.net.za failure to close leaves the spinal cord exposed and vulnerable to injury during fetal development.
Types or Variations
The most common classification system for spina bifida divides the condition into three categories based on severity:
- Meningocele: A meningocele occurs when a small portion of the meninges, the protective layers surrounding the spinal cord, protrudes through an opening in the spine.
- Myelomeningocele (MMC): In this most severe form, both the meninges and neural tissue emerge from the backbone’s defect. The exposed nerves can be compressed or damaged during fetal development.
- Spina Bifida Occulta: Spina bifida occulta is often referred to as a « hidden » condition since it usually presents without apparent external symptoms.
Causes, Risk Factors and Prevention
The exact causes of spina bifida are not fully understood; however, several factors contribute to the development or increased risk:
- Genetic predisposition: A family history of neural tube defects can increase the likelihood.
- Nutritional deficiencies: Insufficient intake of essential nutrients like folic acid during pregnancy heightens the risk.
- Medication and drug interaction: Certain medications, especially those containing valproic acid or carbamazepine, may contribute to an elevated risk.
Research indicates that taking sufficient amounts of folate before conception can significantly decrease the likelihood.
