IL1B and Arthritis: Compared to patient 1, Patient 2 had relatively low levels of IL-1β (54.55±14.5pg/ml) and nitric oxide (20.00±0.6μM/ml) and remarkably high glycosaminoglycan levels (553.33±1.7μg/ml), coupled with significant osteophytes and profound cartilage loss, which indicated severe arthritis and a diagnosis of degenerative meniscal tear.