The effect of low-intensity laser radiation on the healing of microbial-contaminated soft tissue and bone wounds in an open fracture (experimental study)

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Abstract

Influence of low intensive laser irradiation (LILI) on the healing of the infected osseous and soft tissue wound in experimental open fracture was studied using transmission and electron micros­copy. LILI provided antimicrobic affect on the infected wounds increasing phagocytosis by neutrophiles and accelerating the formation of callus.

About the authors

M. J. Azizov

Institute of Traumatology and Orthopedics

Author for correspondence.
Email: info@eco-vector.com
Russian Federation, Tashkent

W. H. Khanaiiyaev

Scientific Center of Surgery. V. Vakhidova

Email: info@eco-vector.com
Russian Federation, Tashkent (Republic of Uzbekistan)

I. M. Baibekov

Scientific Center of Surgery. V. Vakhidova

Email: info@eco-vector.com
Russian Federation, Tashkent (Republic of Uzbekistan)

References

Supplementary files

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1. JATS XML
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2. Rice. 1. Severe polymorphocellular infiltration on the bone surface and in the intertrabecular spaces, violation of the bone architectonics. 3rd day after fracture, control group (stained with hematoxylin and eosin, vol. 10, approx. 10).

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3. Rice. 2. Numerous microorganisms (MO) among erythrocytes (ER) from the area of hemorrhage. 3rd day after fracture, control group (TEM, magn. 12000).

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4. Rice. 3. Accumulations of microorganisms at the surface of the bone and fragments of decayed cells. 3rd day after fracture, control group (TEM, magn. 7500).

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5. Rice. 4. Reducing the number of extracellularly located microorganisms, their phagocytosis by neutrophilic polymorphonuclear leukocytes (PMNs). 5th day after fracture, control group (TEM, magn. 7500).

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6. Rice. 5. Phagocytosis of microorganisms by neutrophilic leukocytes, partial destruction of their cytoplasm. 7th day after fracture, control group (TEM, magn. 7500).

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7. Rice. 6. Reduction of polymorphocellular infiltration on the bone surface, numerous osteoblasts with hyperchromic nuclei around newly formed trabeculae. 3rd day after the fracture during laser therapy (staining with hematoxylin and eosin, vol. 10, approx. 10).

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8. Rice. 7. A small number of free microorganisms, their phagocytosis by polymorphonuclear neutrophilic leukocytes. 3rd day after the fracture during laser therapy (TEM, magn. 7500).

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9. Rice. 8. Coarse-fibered "woven" bone. Single microorganisms, their phagocytosis by polymorphonuclear neutrophilic leukocytes. 7th day after the fracture during laser therapy (TEM, magn. 7500).

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10. Rice. 9. Numerous osteoclasts of newly formed bone, fibroblast dominance in soft tissues near its surface. 14th day after the fracture during laser therapy (staining with hematoxylin and eosin, vol. 10, approx. 10).

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11. Rice. 10. Newly formed bone and cartilage tissue of the callus. 14th day after fracture, control group (staining with hematoxylin and eosin, vol. 10, ok. 10).

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