Acrobot systems are in use in many hospitals across the UK.

Including:

Precision Surgery
> http://www.precisionsurgery.co.uk/

Cornwall Hip Foundation
> http://www.orthopaedicsolutions.co.uk/

King Edward Vii (London)
> http://kingedwardvii.co.uk/

The London Clinic
> http://www.thelondonclinic.co.uk/

Please check availability with the orthopaedic surgeon who is assessing your requirements.