CHIROPRACTORS ‑- MEDICINE ‑- SURGERY AND OSTEOPATHY ‑- LEGALITY OF CERTAIN ACTIVITIES BY CHIROPRACTORS It is not lawful for a chiropractor, as such, to make a medical diagnosis, to use medical electrotherapies such as ultrasound, diathermy and galvanic current as a form of treatment in the course of his practice, or to prescribe electrotherapy or to use electrotherapy on a patient pursuant to a prescription from a medical doctor.