I had meniscus surgery about 3 years ago they removed dead cartilage now my knee hurts if I stand to long and gets worse at night what could it be?

Couple things. It could be arthritic pain it could be patellafemoral pain syndrome. Depends where pain is. U need to do quad and vmo exercises. See if improving function of knee improves condition. If not cortisone or visco inj may help. Talk to ur local orthopedic/sports med doc.

Related Questions

Tore lateral meniscus slightly almost a year back and had surgery to fix it, went back to dance within a couple weeks because the dr said no therapy was needed. Now my knee hurts if I am on my feet for too long or walking more than a short distance?

Rehab needed. Rehab is always necessary after any surgery. Needs tobe checked. Shouldn't have that much pain. Likely need mri. Read more...
Need dr. visit. Something is obviously wrong....Might of reinjured it...Needs to be re-evaluated. Read more...
Meniscus tear. Could be some chondromalacia or surface wear that is causing the pain. Could also be a tear of the meniscus that never healed from the repair if it was in fact sutured at the original surgery. Read more...