Some of the most common reasons for knee pain are sprained ligaments, meniscus (cartilage) tears, tendonitis, and runner's knee...some other causes include bursitis,osteoarthritis, patellofemoral pain syndrome etc...Consult nearest orthopedic surgeon for clinical examination and evaluation they will do the needful....Regards..

Hi there.. knee pain after trauma could be due to many causes like fracture of patella, joint disorders and, ligaments tear, bursitis,septic arthritis.... home remedies to reduce pain are hot fomentation, application of gels containing diclofenac, knee brace, avoid putting pressure over the knee which is paining, avoid sitting down.. please consult orthopedician once..