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Cervicothoracic immobilizer orthoses designed for maximum restriction of movements and/or total immobilization of the cervical and thoracic (trunk) segments of the spine using a chest jacket (known as a halo vest) and a ring fixed to the skull. These vest orthoses consist of rigid structures that include three basic parts: a vest that is fitted on the torso to support the weight of the device, a metal \'halo\' ring that is fixed around the head by metal pins, and metal rods that connect the halo to the vest. Vest orthoses provide triplanar motion control of the cervical spine; they are used for long-term treatment of spinal fractures and less frequently to lessen spinal pain.
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