By John McKenna
The word 'exoskeleton' conjures up images from movies like Ironman or Alien.
But exoskeletons are no longer just science fiction. They are being developed for a wide range of markets, including medicine, manufacturing and construction.
Exoskeletons help disabled people walk again, take on heavy lifting in industrial settings and even assist in the clean-up of nuclear accidents.
With such a wide range of applications, it is unsurprising that the market for exoskeletons is predicted to grow to US$2.1bn by 2021.