<prompt> Dislocation of the veebra is uncommon in thoracic region because in this regionThe aicular processes are interlockedThe veebral body is longAnterior longitudinal ligament is strongSpinous process is long and pointed  <response>: The superior aicular process is directed backward, upward and laterally BUL in the thoracic region. It interlocks with the corresponding inferior aicular facet making a strong aiculation rendering dislocation in the thoracic region uncommon. 