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Journal of Orthopaedics and Traumatology

pp 1–5

First Online: 15 March 2017Received: 22 September 2016Accepted: 14 February 2017


BackgroundPalmitoylethanolamide PEA is an endogenous fatty acid amide that has shown anti-inflammatory activity and neuroprotection and has been used for the treatment of compressive syndromes. The aim of this study is to investigate the clinical and electrophysiological effects of conservative treatment with PEA in low to moderate carpal tunnel syndrome CTS.

Materials and methodsA prospective double-blinded randomized study was performed on 61 patients with a clinical and electrophysiologically confirmed diagnosis of low and moderate CTS. The patients were randomly assigned to two groups. Group N was given 300 mg of PEA twice a day over 60 days and Group P received a placebo with exactly the same appearance every 12 h for the same period. CTS was evaluated before and after treatment through clinical findings, Boston Carpal Tunnel Questionnaire, visual analog scale VAS and electrophysiological data. The results were evaluated with Student’s t test and chi-squared test.

ResultsNo differences were observed in either group compared to the initial status regarding Durkan’s test, Phalen’s test, VAS and electrophysiological data after treatment. The Boston Questionnaire showed better results in both groups, with an improvement in only the symptom severity scale SSS; p = 0.002809 for group P and improvement in the functional status scale FSS; p = 0.03334 and SSS p = 0.005 for group N.

ConclusionsThe results of this study suggest that treatment of CTS with PEA at a dose of 600 mg-day is not associated with an improvement of any clinical and electrophysiological parameters. However, we observed an improvement in the FSS in the Boston Questionnaire after treatment with PEA. Together with the results of other studies, we conclude that further studies of PEA in CTS at higher doses are necessary.

Level of evidenceLevel I of evidence according to ‘The Oxford 2011 Level of Evidence’.

KeywordsPalmitoylethanolamide Carpal tunnel syndrome Randomized control trial  Download fulltext PDF

Autor: Jordi Faig-Martí - Adriana Martínez-Catassús


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