Hello,
Long time since I did any amputee rehab but try this link I'm sure you will get some contacts and info from it

BACPAR | The Chartered Society of Physiotherapy

If this fails then you need to contact The Douglas Bader Rehabilitation Centre at Roehampton in the UK, this is an amazing rehab facility as is Headley Court in Uk (they look after the soldiers from Afghanistan) if they cant help you then perhaps no one can.

Good Luck