Custom orthotics are a type of orthotic that are specifically designed to help a person with a certain orthopedic condition. Orthotics are made from a variety of materials, including foam, plastic, and metal, and can be designed to help with a variety of orthopedic conditions, including foot pain, knee pain, and back pain. Orthotics are often prescribed by a doctor, and can be a very effective way to help a person with a orthopedic condition.