Yellow flags

I had a new patient come in last week due to bilateral medial knee pain after a long winded subjective I managed to uncover that he had also had bilateral arthroscopies on both knees, shoulders and one elbow and ankle, sciatica which he informed me was form his "piriformis syndrome", flat feet for which he had orthotics made for but then he remade for himself because he didnt like the first ones, spondylolythesis in his lower Lx (when xray reports showed only spondlytic changes) but had had rods put in his back which his body had eaten away and his spine was now only held together by 'the glue used with the rods', this knee pain that got worse if he ate chicken treat or was around pesticides, but if he cleansed his liver it got better. It also helped this knee pain to do back/yoga type exercises. He had also made himself a machine that he could use to work on both his back mm and his abdominals. But the main reason he had come in today was to try some US on his knee to see if it helped because he wanted to buy one for himself over the internet.

Now I hope you are thinking exactly what I was, 'ummmmmm where do i start with this one?'. This man obviously had quite alot of yellow flags going off about his beliefs regarding his 'allergic arthritis', his chronic pain and his self diagnoses over the internet but how are you supposed to confront the patient about this. His large stack of Xrays and previous surgeries shows that he has seen many people over many years about his problems. I was left with no choice but to say (after not finding any major signs inobjective assessment) that I did not think that his pain was mechanical in origin and that PT was not indicated, especially not US. But also I found that I was quite drawn in by his story during subjective assessment that it was not until I stood back afterwards that I really put together everything he was saying and realised that this man did have alot of psychological issues along with the physical problems. Other health professionals had obviously also had been sucke din by the story considering all the surgeries that he had managed to get them to do and it seemed that they were all now just 'handballing' him on to other people. I found myself quite unprepared to handle such a patient. Should I try to correct all these long standing views, should I suggest he goes back to his GP to get further help? Does anyone have any ideas or has had any similar cicumstances that they have learnt from?