Diastrophic dysplasia is a rare genetic disorder that affects the growth and development of bones and cartilage. It is caused by a mutation in the SLC26A2 gene, which is responsible for the production of a protein called diastrophic dysplasia sulfate transporter. Symptoms of the disorder include short stature, joint stiffness, clubfoot, and hearing loss. Other complications can include scoliosis, hip dislocation, and cleft palate. Treatment typically involves physical therapy, orthopedic surgery, and hearing aids.