I mountainbike 40 miles a week and used to get soreness/pain/fatigue in my knees. I told my chiropractor about this, and she recommended that I take 250-400 mg of Magnesium a day, taken before I go to bed. It took about 3 days to clear up my knees. I have NOT had orthoscopic.
She also recommended Emer'gen-C. Here is a link.
http://www.vnfnutrition.com/phpshop...session=7baa54523a8a53f013f49829e8bd6d93
I wonder how many crews use 'knee pads'.