The halo brace is often used as the initial treatment for odontoid fractures (located at the second cervical vertebrae of the neck). The halo brace has been used as the initial treatment for odontoid fractures. A "halo" metal ring is secured to the skull with pins and to two metal rods attached to a well-fitted plastic jacket. With this apparatus, it is possible to obtain complete fixation and to arrest almost all movement of the cervical spine. The outcome of this treatment varies with fractures healing and fusing within 3 months in 15% to 85% of patients.