Definition: A congenital condition in which there is a shortening of the sternocleidomastoid muscle of the neck. This results in limited neck range of motion. As a result, the child holds the head to one side with the chin pointing towards the opposite side. Often a firm mass can be palpated in the midportion of the sternocleidomastoid muscle. If untreated, there can be permanent limitation of neck movement.
Also Known As: wry neck