|Description:||The infant depicted here from a left posterolateral perspective, displayed signs of a congenital developmental disorder known as arthrogryposis or arthrogryposis multiplex congenita (AMC), which involves the contracture of the infant’s joints, and accompanying muscle weakness and fibrosis.|
Arthrogryposis multiplex congenita (AMC) is a group of nonprogressive conditions characterized by multiple joint contractures (stiff joints) and abnormal muscle development. The signs and symptoms of AMC are present at birth but can vary greatly in range and severity. In most cases, affected infants have contractures of various joints which may include those of the legs and arms, shoulders, elbows, knees, wrists, ankles, fingers, toes, hips, jaws and/or back. The exact cause of AMC is not fully understood but is thought to be associated with various things including decreased movement or limited space in utero, connective tissue disorders, or maternal illness. Some cases occur as part of genetic disorders. Treatment focuses on the specific findings in each individual and may include physical therapy, removable splints, exercise, and/or surgery.