Journal
JOURNAL OF CLINICAL MEDICINE
Volume 10, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/jcm10215121
Keywords
plasma rich in growth factor; platelet-rich plasma; knee osteoarthritis
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This study retrospectively investigated the short-term effects of leukocyte-poor PRP (LP-PRP) treatment in 124 patients with knee osteoarthritis (KOA), showing a responder rate of 58.1%. Factors contributing to treatment efficacy included higher visual analog scale score before injection, white blood cell count in whole blood, and platelet concentration ratio of LP-PRP.
Although various platelet-rich plasma (PRP) kits are commercially available, the efficacy of these kits for knee osteoarthritis (KOA) has not been fully investigated. This study aimed to investigate the short-term results of leukocyte-poor PRP (LP-PRP) and the factors that contribute to its efficacy. We retrospectively reviewed 124 patients with KOA who were treated with LP-PRP. White blood cell (WBC) and platelet counts in the whole blood and the LP-PRP were measured. KOA severity was assessed using radiography. Clinical evaluation was performed both prior to injection and after an average of 3.3 weeks after the injection using the Japanese Knee Osteoarthritis Measure (JKOM). Responders were defined based on the JKOM. The contributing factors for responders were examined using a multivariate logistic analysis. The responder rate was 58.1% and the contributing factors for responders were a higher visual analog scale score before injection, WBC count in whole blood, and platelet concentration ratio of LP-PRP. The LP-PRP improved the clinical scores in the short term. Certain patient characteristics before injection and the concentration ratio of LP-PRP may be predictors of its efficacy; these may provide clues for elucidating which components of LP-PRP act on KOA pathologies.
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