Dislocation of the veebra is uncommon in thoracic region because in this region: (A) The aicular processes are interlocked, (B) The veebral body is long, (C) Anterior longitudinal ligament is strong, (D) Spinous process is long and pointed
Answer is A. 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.