Artigo
High voltage pulsed current in collagen realignment, synthesis, and angiogenesis after Achilles tendon partial rupture
Fecha
2016Registro en:
Brazilian Journal Of Physical Therapy. Sao Carlos Sp, v. 20, n. 4, p. 312-319, 2016.
1413-3555
WOS000383791500004.pdf
S1413-35552016000400312
10.1590/bjpt-rbf.2014.0167
WOS:000383791500004
Autor
Rampazo, Erika P. [UNIFESP]
Liebano, Richard E.
Pinfildi, Carlos Eduardo [UNIFESP]
Folha, Roberta A. C. [UNIFESP]
Ferreira, Lydia M. [UNIFESP]
Institución
Resumen
Objective: To verify the efficacy of high voltage pulsed current in collagen realignment and synthesis and in angiogenesis after the partial rupturing of the Achilles tendon in rats. Method: Forty male Wistar rats were randomized into four groups of 10 animals each: sham, cathodic stimulation, anodic stimulation, and alternating stimulation. Their Achilles tendons were submitted to direct trauma by a free-falling metal bar. Then, the treatment was administered for six consecutive days after the injury. In the simulation group, the electrodes were positioned on the animal, but the device remained off for 30 minutes. The other groups used a frequency of 120 pps, sensory threshold, and the corresponding polarity. On the seventh day, the tendons were removed and sent for histological slide preparation for birefringence and Picrosirius Red analysis and for blood vessel quantification. Results: No significant difference was observed among the groups regarding collagen realignment (types I or III collagen) or quantity of blood vessels. Conclusion: High voltage pulsed current for six consecutive days was not effective in collagen realignment, synthesis, or angiogenesis after the partial rupturing of the Achilles tendon in rats.