I got polio when I was 3yr old, it resulted in my right leg not developing properly it is 6 inchs shorter than my left leg, Iam now 60yrs old and up until 4/5 years ago I could manage to get around with the aid of a walking stick, all be it very slowly and not very far, but now Iam unable to walk and now have to use cruches to get around ,my question is will this affect the the points Iam awarded in the mobility section of the PIP because I can cover more than 20 m using cruches George