part of part of Homo sapiens zone of bone organ thoracic vertebra 8 inferior articular facet of eighth thoracic vertebra 2026-03-19T00:00:00Z A zone of bone organ located on the inferior articular process of the eighth thoracic vertebra, facing anteroinferiorly and oriented in the coronal plane. It articulates with the superior articular facet of T9 at the zygapophyseal joint, contributing to the typical thoracic pattern of constrained rotation and limited sagittal mobility. David Osumi-Sutherland