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Table 1 Inclusion and exclusion criteria

From: Perioperative platelet rich plasma (PRP) in total hip arthroplasty through the Hardinge approach: protocol to study the effectiveness for gluteus medius healing

Inclusion criteria (all of the following):  
 1. Age 60–75 years  
 2. Plain x-rays showing osteoarthritis (Kellgren and Lawrence gradus 3–4) which correlates with clinical symptoms  
 3. Clinically symptomatic osteoarthritis requiring treatment with total hip arthroplasty  
Exclusion criteria (any one of the following):  
 1. Previous surgery of the affected joint  
 2. Post-traumatic arthritis  
 3. Rheumatoid arthritis and other autoimmune illnesses  
 4. Malignancy  
 5. Patients on oral glucocorticosteroids  
 6. Insulin-dependent diabetes  
 7. Smoking  
 8. Alcohol or drug abuse  
 9. Mental instability