Having proved his point, Dr Liu is now trying to design sensors that work more like the sense cells in a real lateral line.

'Sleepingon your front - lateral sleeping - is the worst possible position you can sleep in from a musculoskeletal point of view,' says Rishi Loatey of the British Chiropractic Association.

Objective To improve the puncture point to lateral recess and select the indication of collagenase injection for lumber intervertebral disc.