title: Does intra articular platelet rich plasma injection improve function, pain and quality of life in patients with osteoarthritis of the knee? A randomized clinical trial.
abstract: We designed a randomized clinical trial with control group, to investigate the effects of platelet rich plasma (PRP) on pain, stiffness, function and quality of life in patients with knee osteoarthritis. Patients were randomly divided in two groups. For both groups of participants, therapeutic exercise was prescribed. In the PRP group, two courses of leukocyte rich PRP (5.6 fold higher platelet concentration) with a 4-week interval was injected. For each participant, Western Ontario and McMaster University's Arthritis Index (WOMAC) and the SF-36 questionnaire (Farsi version) were filled at the baseline and 6 months after treatments. Thirty-one patients in the PRP group and 31 patients in the control group were studied. Mean changes of total WOMAC, physical component summery and mental component summery of Short Form-36 in PRP group showed better improvement than control group (P<0.05). This study showed that intra articular PRP knee injection combined with therapeutic exercise can be more effective in pain reduction and improvement of stiffness and quality of life, compared with therapeutic exercise alone.
authors.affiliation: Physical Medicine and Rehabilitation Department, Shohada-e-Tajrish Hospital , Tehran, Iran.
authors.forename: Seyed Mansoor
authors.initials: SM
authors.lastname: Rayegani
authors.affiliation: Physical Medicine and Rehabilitation Department, Shahid Modarres Hospital , Tehran, Iran.
authors.forename: Seyed Ahmad
authors.initials: SA
authors.lastname: Raeissadat
authors.affiliation: Radiology Department, Shohada-e-Tajrish Hospital, Shahid Beheshti University of Medical Sciences , Tehran, Iran.
authors.forename: Morteza Sanei
authors.initials: MS
authors.lastname: Taheri
authors.affiliation: Physical Medicine and Rehabilitation Department, Shohada-e-Tajrish Hospital , Tehran, Iran.
authors.forename: Marzieh
authors.initials: M
authors.lastname: Babaee
authors.affiliation: Physical Medicine and Rehabilitation Department, Shohada-e-Tajrish Hospital , Tehran, Iran.
authors.forename: Mohammad Hassan
authors.initials: MH
authors.lastname: Bahrami
authors.affiliation: Physical Medicine and Rehabilitation Department, Shohada-e-Tajrish Hospital , Tehran, Iran.
authors.forename: Dariush
authors.initials: D
authors.lastname: Eliaspour
authors.affiliation: Physical Medicine and Rehabilitation Department, Shohada-e-Tajrish Hospital , Tehran, Iran.
authors.forename: Elham
authors.initials: E
authors.lastname: Ghorbani
keywords: knee osteoarthritis; platelet rich plasma; therapeutic exercise