Which cervical orthosis attaches to the skull by screws and provides maximum cervical spine control?

Which cervical orthosis attaches to the skull by screws and provides maximum cervical spine control?

• A. Halo orthosis
• B. Minerva orthosis
• C. Cervical - Four-poster orthosis
• D. Soft collar

Answer: (C)

Direct skull fixation yields the strongest stabilization of the cervical spine. A halo orthosis uses pins that thread into the skull to secure a halo ring, which is then connected to a torso vest. This setup locks the head to the ring and limits movement in all directions at the upper cervical joints, providing maximal control of the neck—especially for unstable injuries at the upper levels like C1–C2. Other devices lack this level of skull fixation: a four-poster cervical-thoracic immobilizer anchors around the neck and torso but does not attach to the skull, so it cannot offer the same rigidity of control. The Minerva orthosis also fixes to the skull, but, in practice, halo immobilization is the most rigid option. A soft collar offers only basic support and minimal immobilization, appropriate for less severe issues.

Direct skull fixation yields the strongest stabilization of the cervical spine. A halo orthosis uses pins that thread into the skull to secure a halo ring, which is then connected to a torso vest. This setup locks the head to the ring and limits movement in all directions at the upper cervical joints, providing maximal control of the neck—especially for unstable injuries at the upper levels like C1–C2. Other devices lack this level of skull fixation: a four-poster cervical-thoracic immobilizer anchors around the neck and torso but does not attach to the skull, so it cannot offer the same rigidity of control. The Minerva orthosis also fixes to the skull, but, in practice, halo immobilization is the most rigid option. A soft collar offers only basic support and minimal immobilization, appropriate for less severe issues.