Arthrogryposis (also called arthrogryposis multiplex congenital) is a condition in which a baby is born with joint contractures. This means a loss of movement, or a smaller range of motion, in the joint. Normally, joints have stretchy tissue. If there is a contracture, this tissue is replaced by a “non-stretchy” tissue. Without the stretchiness, joints may have a limited range of movement. If extra tissue forms around the joints, they may even be “locked” into place. About 1 in 3,000 babies is born with arthrogryposis. Fortunately, it’s not progressive, meaning it doesn’t get worse over time. With the right treatment, most children born with arthrogryposis can lead healthy, productive lives.