File photo: Xinhua/Zhou Mi.

A girl had the bottom half of her face completely reconstructed after a riding accident left her with the worst injuries her doctors had seen outside a war zone.

Emily Eccles, 15, had just one centimetre of skin keeping her jaw attached to the rest of her head after her horse was spooked by a car and she was smashed into a gatepost.

The teenager faced being permanently disfigured as she was rushed to hospital clutching her severed jaw in her hands.

But during a five-and-a-half-hour long operation, consultant facial reconstructive surgeon Ricardo Mohammed-Ali rebuilt her face with such precision – using three titanium plates and more than 160 stitches – that once the scars have healed there will be no visible sign of her brush with death.