Inclusion criteria:
Moderate Knee Osteoarthritis (grade two or three based Radiographic classification (Kellegren and Lawrence)
Existence of symptoms in favor of Knee Osteoarthritis for at least 3 months
Minimum score of 3 in the criterion (VAS)
Absence of Inflammatory Rheumatic diseases
45 years old and older
Satisfaction of patients participating in the study
Failure to respond to Conservative drug treatments and physiotherapy lasted for 6 months
Exclusion criteria:
Severe Osteoarthritis (grade 4 candidates for joint replacement surgery)
Rheumatic disease Clearly
Visible deformity of the knee Ankylosis
Contraindications to Ozone include: Hyperthyroidism , Thrombocytopenia ,Pregnancy , Recent heart attack history ,G6PD Deficiency
Definitive and partial Contraindications to Steroid injection include: Bacteremia, Sepsis, Intra articular or pre uricular infection, History of post injection Allergy, Intra articular or Osteochondral fracture at the injection site, Severe Joint destruction in Injection site , Artificial joint , Uncontrolled Coagulation disorders Specific skin lesion at the injection site