The costal articular facets of T11, which extend onto the pedicles and articulate with the heads of the eleventh pair of ribs, are circular concave facets.  They are located on the postero-superior aspects of both sides of the vertebral body and are covered with hyaline cartilage.

The costal articular facets of T12, which extend onto the pedicles and articulate with the heads of the twelfth pair of ribs, are circular concave facets.  They are located below the upper border of both sides of the vertebral body and are also covered with hyaline cartilage.