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Характеристика волокнистого остова сухожилия длинного разгибателя пальцев стопы собак при удлинении голени в различных условиях чрескостного дистракционного остеосинтеза

Характеристика волокнистого остова сухожилия длинного разгибателя пальцев стопы собак при удлинении голени в различных условиях чрескостного дистракционного остеосинтеза

Abstract

Выявление морфологических характеристик сухожилия длинного разгибателя пальцев стопы может иметь ключевое значение при выяснении риска его травмирования в условиях удлинения голени с различным суточным темпом и дробностью. Цель исследования – изучить особенности гистоструктурных изменений волокнистого остова сухожилия длинного разгибателя пальцев стопы собак при удлинении голени методом чрескостного дистракционного остеосинтеза с суточным темпом 1 мм за 4 приема в ручном режиме и 3 мм за 120 приемов с использованием автоматического привода. В опыте участвовало 56 взрослых беспородных собак. Методами световой и сканирующей электронной микроскопии и морфометрии выявлено, что независимо от условий эксперимента структуры волокнистого остова рыхлой и плотной оформленной соединительных тканей сухожилия в условиях дозированной дистракции приобретают ориентированную по вектору воздействия растягивающих усилий направленность, проявляя локальные признаки перерастяжения. Репаративно-деструктивным изменениям наиболее подвержены коллагеновые и эластические волокна сухожилия в условиях удлинения конечности с повышенным (3 мм) суточным темпом. Это обстоятельство следует учитывать при выборе способа удлинения конечности.

The reveal of the morphological characteristics of the tendon of foot digital long extensor may have a key role in determination of its injury risk during leg lengthening using different daily rate and division. Aim of the work is to study the features of histostructural changes in the fibrillar framework of the tendon of the canine foot digital long extensor under leg lengthening by transosseous distraction osteosynthesis technique by 1 mm a day for 4 times manually, as well as by 3 mm for 120 times automatically. 56 adult mongrel dogs took part in the experiment. When using the techniques of light and scanning electron microscopy and morphometry the structures of the tendon fibrillar framework of made-out loose and dense connective tissues under graduated distraction have been revealed, regardless of experimental conditions, to acquire the orientation along the vector of influencing distraction forces, showing local signs of overstraining. The tendon collagen and elastic fibers are the most subjected to reparative-and-destructive changes during limb lengthening with the increased (3 mm) daily rate. This should be taken into account when selecting a technique of limb lengthening.

Keywords

СУХОЖИЛИЕ ДЛИННОГО РАЗГИБАТЕЛЯ ПАЛЬЦЕВ СТОПЫ, ЧРЕСКОСТНЫЙ ДИСТРАКЦИОННЫЙ ОСТЕОСИНТЕЗ, КОЛЛАГЕНОВЫЕ ВОЛОКНА, ЭЛАСТИЧЕСКИЕ ВОЛОКНА, ФИБРИЛЛОГЕНЕЗ, ВОЛОКНИСТЫЙ ОСТОВ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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