The medial compartments of the knee joint space is reduced in height.The lateral compartments of the knee joint space appears normal.Early tibial spiking is seen with small osteophytes formation along the articular surfaces.The rest of the visualised bones shows normal architecture & density.There is no abnormal soft tissue swelling or calcification.-          GRADE I - II OSTEO ARTHRITIS.
Osteoarthritis knee divided into mild, moderate and severe levels. The mentioned grade is mild osteoarthritis. Normal knee joint should have equal non compressed space between femur and tibia. Your case need medical treatment of glucosamine tablets, but you must not stand longtime or climbing stairs. Donot worry, this case is more with progress of age and doing the instruction is sufficient for your prophylaxis.