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Updated: May 15, 2026

Effects of Allogeneic Platelet-Rich Plasma (PRP) on the Healing Process of Sectioned Achilles Tendons of Rats: A Methodological Description
Published on: March 19, 2018
Platelet-rich plasma injections for chronic plantar fasciitis
Nicolo Martinelli1, Andrea Marinozzi, Stefano Carnì
1Department of Ankle and Foot Surgery, IRCCS Galeazzi, via R. Galeazzi 4, 20100, Milan, Italy. n.martinelli@unicampus.it
Purpose:
The purpose of this study was to assess the safety and preliminary clinical results of platelet-rich plasma (PRP) injections for treating chronic plantar fasciitis.
Methods:
Fourteen consecutive patients with chronic plantar fasciitis receiving three injections of PRP into the plantar fascia were assessed 12 months after the procedure. The modified Roles and Maudsley score and a visual analogue scale (VAS) for pain were used to evaluate the clinical results.
Results:
According to criteria of the Roles and Maudsley score, at 12 months of follow-up, results were rated as excellent in nine (64.3 %), good in two (14.3 %), acceptable in two (14.3 %) and poor in one (7.1 %) patient. VAS for pain was significantly decreased from 7.1 ± 1.1 before treatment to 1.9 ± 1.5 at the last follow-up (p < 0.01).
Conclusions:
In this single-centre, uncontrolled, prospective, preliminary study, results indicate that treating chronic plantar fasciitis with PRP injections is safe and has the potential to reduce pain.
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