superior costal facet of eleventh thoracic vertebra
A zone of bone organ forming the superior demi-facet on the posterolateral body of the eleventh thoracic vertebra. It articulates with the head of rib 11; T11 typically bears a single large complete costal facet on the body for rib 11, which lacks a transverse costal facet on the transverse process, reflecting the atypical nature of this vertebra.