Fractured clavicle-a fractured clavicle would prevent the normal moro response of symmetrical sequential extension and abduction of the arms followed by flexion and adduction. in talipes equinovarus (clubfoot) the foot is turned medially, and in plantar flexion, with the heel elevated. the feet are not involved with the moro reflex. hypothyroiddism has no effect on the primitive reflexes. absence of the moror reflex is the most significant single indicator of central nervous system status, but it is not a sign of increased intracranial pressure.