The Use of Platelet-Rich Plasma for Treatment of Tenodesmic Lesions in Horses: A Systematic Review and Meta-Analysis of Clinical and Experimental Data

Simple Summary: Tenodesmic injuries are key problems for sport horses. Several therapies have been developed over the years, including platelet-rich plasma (PRP), an autologous product that should stimulate tissue regeneration with its high concentration of growth factors. Nowadays, there are conflicting reports concerning the effect of PRP in tenodesmic lesions. The aim of our systematic review was to determine the effect of PRP on tendons and ligaments healing through a meta-analysis, a process to determine consensus from across published studies. The meta-analysis is the quantitative component of a systematic review, a statistical synthesis of the published data about a topic. We selected studies that evaluate PRP therapy in vitro or in vivo, most of which had a high risk of bias. The results found there is no evidence that PRP enhances the healing of tendon and ligament injuries. In the future, further unbiased, blinded, and controlled studies are needed to clarify the efficacy of this platelet concentrate in the treatment of equine tendon and ligament injuries. Abstract: The use of platelet-rich plasma (PRP) to enhance tenodesmic lesion healing has been questioned over the years. The aim of this study was to evaluate current literature to establish the effectiveness of PRP for treating tenodesmic lesions through a systematic review, in accordance with the PRISMA guidelines, and a meta-analysis. Studies comparing PRP with placebo or other treatments for horses with tenodesmic injuries or evaluated PRP effect on tendon and ligament explants were included. Outcomes were clinical, ultrasound, histologic, molecular evaluation, and adverse effects. Two authors independently extracted data and assessed each study’s risk of bias. Treatment effects were evaluated using risk ratios for dichotomous data, together with 95% CI. Data were pooled using the random-effects model. The quality of the evidence for each outcome was assessed using GRADE criteria. Twenty-four trials met inclusion criteria for systematic review, while fifteen studies were included in the meta-analysis. Results showed no significant differences in the outcomes between PRP and control groups. Finally, there is no definitive evidence that PRP enhances tendons and ligaments healing. Therefore, there is a need for more controlled trials to draw a firmer conclusion about the efficacy of PRP as a treatment for tenodesmic lesions in the horse.

The Use of Platelet-Rich Plasma for Treatment of Tenodesmic Lesions in Horses: A Systematic Review and Meta-Analysis of Clinical and Experimental Data

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