Hi debtwell
It's obviously up to you what you put on your form, but it is major surgery so I would include it. Just be very careful how you word any information you put on the form. Don't say "I don't feel my osteoarthritis or fibromyalgia have not improved" - Say "they have not improved" - saying "I don't feel" (which you may have only written here) - leaves it open to question and you know how quickly they will jump on any sense of doubt.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems