Arthrogryposis 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.