Quadriceps tendon autograft and platelet rich plasma injection for chronic Achilles tendon tears

Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Salerno, Italy; Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, London E1 4DG, England; Institute of Science and Technology in Medicine, Keele University School of Medicine, Stoke on Trent, England Correspondence to: Nicola Maffulli. Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Fisciano, Salerno, Italy. Email: n.maffulli@qmul.ac.uk. Provenance and Peer Review: This article was commissioned by the Editorial Office of Annals of Translational Medicine. The article did not undergo external peer review. Comment on: Arriaza R, Arriaza Á, López-Vidriero E, et al. Quadriceps tendon autograft and platelet rich plasma injection to treat chronic Achilles tears—a minimum two-year follow-up. Ann Transl Med 2019;7:746.