My main argument is with the issue that I am continually in pain when I walk. I had believed that if you are in constant pain, any distance you can manage is ignored.
As a secondary issue is that the medical assessment (4 minute physical examination) concluded I could walk ok, whereas I was diagnosed with Acute Grade 4 cartilage damage in both knees three weeks after the examination ! Surely this makes these medical assessments a complete waste of time. ( Have had 2 total knee replacements since then)