United Kingdom, March 22 -- Jessie J feared she had broken her neck after hitting her head on the roof of a car.

The 37-year-old singer, born Jessica Cornish, made the admission as she addressed an incident that led to her being taken to hospital for an MRI scan while on tour in Beijing.

Jessie shared details of the injury in an Instagram post as she travelled to a concert in the Chinese capital.

In footage posted online, she is seen climbing into the back of a car before striking her head on the roof.

She later shared clips from hospital, including undergoing an MRI scan, and posted further updates while backstage preparing to perform despite the injury.

Speaking in a video update, Jessie told fans: "Yeah, I just can't move my head....