Periodontal Ehlers-Danlos syndrome Periodontal EDS (pEDS) causes dental problems, particularly inflamed or absent gums and poor tooth development, on top of typical features of cEDS. It is rare but can be inherited from one parent only, as only one faulty gene is needed to develop the condition.
Ribs 1, 2, 11 and 12 can be describes as âatypicalâ â they have features that are not common to all the ribs. Rib 1 is shorter and wider than the other ribs. It only has one facet on its head for articulation with its corresponding vertebrae (there isnât a thoracic vertebrae above it).
The bones of the rib cage are the sternum, the 12 thoracic vertebrae and the 12 pairs of ribs.The sternum is a flat bone that is made up of three parts, the (1) manubrium, (2) body, and the (3) xiphoid process. The top edge of the manubrium has a depression called the suprasternal or jugular notch.he bones of the rib cage are the sternum, the 12 thoracic vertebrae and the 12 pairs of ribs. The sternum is a flat bone that is made up of three parts, the (1) manubrium, (2) body, and the (3) xiphoid process. The top edge of the manubrium has a depression called the suprasternal or jugular notch.