The present invention teaches a head and neck cast for providing secure immobilization of a patient's upper neck and head extremities and includes a lower ergonomically configured ring supported upon the shoulders of the wearer. An upper ring is vertically displaceable in each of upper and lower directions relative to the lower support ring via an interconnecting network of both scissoring and vertically extending jacks. In this fashion, the neck and head of the patient is immobilized via the positional support provided by the lower ring and without the need for screws mounted to the skull.