A cohort study of 20 collegiate athletes with acute grade 3 hamstring strains treated with platelet-poor plasma (PPP) demonstrated significant pain relief within 2 weeks and a mean return to unrestricted play of 29.4 days, and no injury recurrence at 52 weeks. This suggests that PPP may be an effective treatment option for acute muscle injuries.
https://pubmed.ncbi.nlm.nih.gov/41230426/.