👉 Hemimorphosis is a condition where an individual's body cannot support their full growth, causing them to have two limbs or more than two arms. This can occur due to a genetic defect, birth defect, or other medical conditions affecting the development of the limb(s) in question. Hemimorphosis often occurs in children and adolescents with certain health issues such as Down Syndrome, cerebral palsy, or spinal cord injuries.