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With increasing frequency, platelet-rich plasma (PRP) preparations have been used to treat cartilage lesions to regenerate tissue homeostasis and retard the progression of knee osteoarthritis (OA). Purpose: To determine the effectiveness of intra-articular PRP injections in early-stage OA patients and to evaluate the clinical outcome. Materials and methods: This prospective study was conducted in the Department of Orthopaedic Surgery, King George’s Medical University, Lucknow, Uttar Pradesh, India. The study was conducted on patients with early-stage OA knee enrolled on outpatient department basis during the year 2014 to 2015. The effective sample size was 40 patients with bilateral OA knee in which intra-articular injection was given. And the clinical outcomes and effectiveness were measured in terms of visual analog scale and Western Ontario and McMaster Universities Osteoarthritis Index scores at the end of 6, 12, and 24 weeks. A p-value <0.05 was considered statistically significant. Results: There was significant improvement in all scores at the end of 6, 12, and 24 weeks. Conclusions: The PRP treatment showed positive effects in patients with knee OA. Clinical relevance: There are only a few studies of PRP treatment for cartilage on OA knees. Different PRP products might be more or less appropriate to treat different types of tissues and pathologies. The clinical efficacy of PRP remains under debate, and a standardized protocol has not yet been established.

Clinical Outcome of Intra-articular Injection of Platelet-rich Plasma in Early-stage Knee Osteoarthritis in North Indian Patients