Histological study of tendon healing in malnourished Wistar rats treated with ultrasound therapy
Acta cir. bras
;
21(supl.4): 13-17, 2006. ilus
Article
in English
| LILACS
| ID: lil-440772
ABSTRACT
PURPOSE:
To investigate the effects of therapeutic ultrasound on the healing of tendon injuries in malnourished rats.METHODS:
After the intended nutritional states had been attained, the animals (N=36) were distributed into three groups, named G1(N=12), control group; G2(N=12), malnourished rats treated with 3 MHz ultrasound at an intensity of 0.5 W/cm²; and G3 (N=12), normal animals treated with 3 MHz at 0.5 W/cm². The injuries were induced by means of an operation to expose the heel tendon and crush it using Allis forceps.RESULTS:
The data obtained relating to leukocyte counts, fibroblasts, vessel neoformation, fibrosis and collagen were subjected to statistical treatment using analysis of variance (ANOVA) and Student's t test. Results of p < 0.05 were obtained for fibrosis and collagen.CONCLUSION:
The ultrasound was shown to be effective in repairing the tendon, even in malnourished animals whose healing process was retarded.RESUMO
OBJETIVO:
Investigar os efeitos do ultrassom terapêutico na cicatrização de lesões tendíneas em ratos desnutridos.MÉTODOS:
Após ser constatado o estado nutricional proposto, os animais (N=36) foram distribuídos em três grupos, denominados G1(N=12) grupo controle, G2(N=12) desnutrido tratado com ultra-som 3 MHz a 0,5 w/cm² de intensidade e G3(N=12) animais normais tratados com 3 MHz a 0,5 w/cm². As lesões foram induzidas através de procedimento operatório para exposição e esmagamento com pinça Allis, do tendão calcâneo.RESULTADOS:
Os dados obtidos em relação à quantidade de leucócitos, fibroblastos, neoformações de vasos, fibrose e colágeno foram submetidos ao tratamento estatístico pela análise de variância (ANOVA) e teste "t" obtendo-se p < 0,05 para fibrose e colágeno.CONCLUSÃO:
O ultra-som mostrou-se eficaz no reparo tendíneo, mesmo nos animais desnutridos e com processo de cicatrização retardado.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tendon Injuries
/
Ultrasonic Therapy
/
Wound Healing
/
Malnutrition
Limits:
Animals
Language:
English
Journal:
Acta cir. bras
Journal subject:
General Surgery
/
Procedimentos Cir£rgicos Operat¢rios
Year:
2006
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Federal University of Mato Grosso do Sul/BR
/
UNIDERP/BR
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