SOMI ( Sterno Occipital Mandibular Immobilizer )

The sterno-occipital-mandibular immobilizer (SOMI) cervical orthosis is a rigid cervico thoracic orthosis used for supporting the ervical spine . SOMI does not provide complete immobilization though. It is somewhere between a Philadelphia collar and a halo brace.

Somi Brace ( Sterno Occipital Mandibular Immobilizer ) designed to apply forces under the chin and occiput to restrict flexion and extension as well as rotation of the head and cervical spine.

Structurally, it has a chest plate that goes up to the notch where the collarbones meet in the front and metal, aluminum, or plastic bars that curve over the shoulder.

Straps from the bars go over the shoulder and cross to the opposite side of the anterior plate to hold it in place.