Effects of low-level laser therapy on the modulation of tissue temperature and hyperalgesia following a partial Achilles tendon injury in rats.

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Effects of low-level laser therapy on the modulation of tissue temperature and hyperalgesia following a partial Achilles tendon injury in rats.

J Cosmet Laser Ther. 2017 May 30;:

Authors: Gomes CAFP, Dibai-Filho AV, Pallotta RC, da Silva EAP, Marques ACF, Marcos RL, de Carvalho PTC

Abstract
The aim of the present study was to evaluate the effects of low-level laser therapy (LLLT) on the modulation of tissue temperature and hyperalgesia following a partial injury to the Achilles tendon in rats. Forty-five rats were randomly divided into three groups: a control group, a group treated with LLLT at a dose of 1.4 J (808 nm, 50 mW, 1.4 J) and a group treated with LLLT at a dose of 2.1 J (808 nm, 50 mW, 2.1 J). LLLT was administered to a single point immediately following the partial injury of the Achilles tendon. Tissue temperature and hyperalgesia were evaluated 6, 24 and 48 hours following the injury. Thus, a significant group-versus-time interaction was found for tissue temperature (F = 4.097, p = 0.001) and hyperalgesia (F = 106.605, p < 0.001), with a greater reduction in theses outcomes in the group that received LLLT at a dose of 2.1 J evaluated 48 hours after the injury. Therefore, LLLT at a wavelength of 808 nm and dose of 2.1 J administered immediately following a partial injury to the Achilles tendon led to a reduction in tissue temperature and hyperalgesia at the injury site in rats, especially 48 hours after injury.

PMID: 28557593 [PubMed - as supplied by publisher]

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