Different power settings of LLLT on the repair of the calcaneal tendon.

Objective: The purpose of this study was to evaluate the effect of an 830-nm GaAlAs diode laser operating at output powers of 40, 60, 80, and 100 mW and energy density of 30 J/cm(2) on the repair of partial calcaneal tendon ruptures in rats.

Methods: A partial tendon rupture was induced in all animals, which were treated with laser irradiation for 5 consecutive days. Six days after injury, the injured tendons were removed and examined by polarized light microscopy.

Effects of lidocaine with epinephrine or with buffer on wound healing in rat skin.

Lidocaine blocks nociceptive fibers, preventing initial wound signaling and mast cell degranulation. It is hypothesized that epinephrine and buffer affect the wound healing by potentiating lidocaine blockage. This double-blind, randomized, self-controlled study investigated this possibility using male Wistar rats, which were injected with 2 mL of different solutions into the left and right sides of the back.

Collagen changes and realignment induced by low-level laser therapy and low-intensity ultrasound in the calcaneal tendon.

Background And Objective: The treatment of calcaneal tendon injuries requires long-term rehabilitation. Ultrasound (US) and low-level laser therapy (LLLT) are the most used and studied physical agents in the treatment of tendon injuries; however, only a few studies examined the effects of the combination of US and LLLT. Therefore, the purpose of this study was to investigate which treatment (the exclusive or combined use of US and LLLT) most effectively contribute to tendon healing.