Clinical and imaging effects of corticosteroids and platelet-rich plasma for the treatment of chronic plantar fasciitis: A comparative non randomized prospective study

•Injections of PRP is a safe, more efficient and long-lasting method than that of corticoid injections.•Injectios of PRP produce a significant clinical improvement that is maintained in time.•MRI and US have proven useful in assessing the response of plantar fascia injuries to nonoperative treatments.