Diastematomyelia is a medical condition that affects the spinal cord. It is a rare birth defect that causes the spinal canal to split into two halves. It can cause a range of symptoms, including weakness and numbness in the legs, difficulty walking, and bladder and bowel problems. There are several synonyms for diastematomyelia which include: split cord malformation, myelodysplasia, bifid spinal cord, and hydromyelia. Although the condition is uncommon, it can have a significant impact on the quality of life of those affected. Treatment for diastematomyelia typically involves surgery to address the malformation and alleviate symptoms.