Arthrogryposis (Arthrogryposis Multiplex Congenita) is a condition where a child is born with multiple joint contractures. A contracture occurs when the muscles, tendons and ligaments in the body become tight and prevent normal movement. In some cases children have only a few joints that are affected. They may have near normal range of motion. In most children with arthrogryposis, their hands, wrists, elbows, shoulders, hips, feet and knees are affected. In severe cases, nearly all body joints may be involved, including the jaw and back. Often children will also have muscle weakness which further limits their movement.