A chiropractor filmed performing spinal manipulation on a two-week-old baby has been banned from treating children under 12 while he is investigated by health authorities.

Andrew Arnold, owner of Cranbourne Family Chiropractic in Melbourne, triggered a public outcry after the footage emerged showing him dangling the infant upside-down by the ankles before performing spinal adjustments using a spring-loaded device called the ‘Activator’.

Mr Arnold begins by locking his hands around the baby’s feet before lifting him up off his back and hanging him upside-down to ‘adjust’ his spine.

At one point he pushes the baby’s tailbone with his thumbs saying he is “moving the cerebrospinal fluid”.