APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The true ribs are the ribs that directly articulate with the sternum with their costal cartilages; they are the first seven ribs.

Detailed explanation-2: -Sternal articulations The sternocostal joints are formed between the medial end of the costal cartilages of ribs one to seven. The joint between the first rib and the sternum is cartilaginous, but all the others are synovial. Each is surrounded by a capsule and supported by radiate ligaments.

Detailed explanation-3: -The defining characteristic of thoracic vertebrae is their intimate relationship with the ribs (Vollmer et al. 1997). A rib articulates at the junction of the vertebral body and pedicle (superior costal facet) of its named vertebra and the vertebra above (inferior costal facet).

Detailed explanation-4: -The upper seven pairs of ribs are known as true ribs because their costal cartilages articulate anteriorly directly with the sternum. The lower five pairs of ribs (ribs eight to twelve) are known as false ribs because their costal cartilages do not articulate directly with the sternum.