Accessory costal ligaments, or additional ribs (Latin l. accessoriae costarum; English accessory costal ligaments, ACC) are paired ligaments that attach additional ribs to the anterior surface of the transverse processes of the cervical vertebrae. Popularly, these ligaments are also called accessory ribs. They are located between the second and third ribs. When breathing, these ligaments are stretched.
These ligaments form respiratory support for the neck and allow the head to turn to the sides. They also reduce the likelihood of damage to the vertebrae during neck movements, increase muscle strength, and lead to a more correct position of the internal organs of the chest and abdomen.
Changes in the ligaments of the accessory ribs can lead to dysfunction of the head and neck. This may be due to injury and illness. For example, bone restructuring occurs in the chest if osteochondrosis of the cervical spine occurs. The distances between the vertebrae decrease, and over time the tension in the ligaments becomes greater. Because of this, the body of the neck moves forward. The brain and blood vessels are compressed by the occipito-cervical or upper thoracic flexure. In such a person, the head is tilted forward relative to the chest. When turning the neck to the left or right, a person feels tension on the sides.
Treatment begins with simple measures: seeing a doctor. The following are recommendations: exclude alcohol, smoking, fatty and spicy foods and drugs from the diet. Then exercises to stretch and strengthen the ligaments, as well as physical therapy.