Authors
Abstract
Tenotomized Achilles tendon Rabbits were used to investigate the effect of lowintensity
pulsed ultrasound (LPUS) to accelerate the repair of injured tendon. The
medial Achilles tendons of 18 local breed male rabbits were transected of all animals
without suture, and bandaging was performed to immobilization the injured limb.
Nine animals were chosen randomly to receive low-intensity pulsed ultrasound, the
other 9 animals served as control. pulsating ultrasound with intensities 500 mW/cm2
and frequency 2.5 MHz were given over the healing tendons for 10 minute daily,
using a gel as the coupling agent between the ultrasound probe and the skin. The
healing tendons were evaluated clinically, macroscopically and microscopically for
three periods at 7, 14 and 21 days respectively after tenotomy, three rabbits for each
period. In the ultrasound-treated group at 14 and 21 days postoperatively, the
macroscopic and histological studies demonstrated that the low-intensity pulsed
ultrasound enhanced the healing of tendomize Achilles tendon. The ultrasound treated
group showed more mature organization at all end points of injured tendons compared
Keywords
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