The Full form of AMC is Arthrogryposis Multiplex Congenita. AMC is a disease of newborns resulting in decreased flexibility of the joints. It is a disorder that develops at prenatal (before birth) stage and is evident at birth (congenital) and involves limited mobility of multiple joints. Symptoms differ drastically from person to person, including muscle weakness and stiff joints. The body parts that are most likely to have lack of movement are the wrists, hands, shoulders, elbows, hips, knees, and feet. Unlike many other diseases, the lack of movement does not get worse as time goes by. However, it is necessary to seek treatment to prevent further impediments of the joints. There are many causes of AMC, some of which are inherited. Before birth, the possibilities exist that limit joint movements are; abnormal development of muscles, inadequate room in the uterus for the baby, a malformed central nervous system and spinal cord, and joints, tendons, bones, and joint linings which did not mature correctly. The decrease in range of motion is also caused by extra tissue that has formed around the joint, prohibiting movement. Only 1 out of 3000 births is apt to develop AMC, and only 30% of those are genetically related.