СТЕНТОПЛАСТИКА В КОМБИНАЦИИ С БИОРЕЗОРБИРУЕМЫМ ЦЕМЕНТОМ ПРИ ПЕРЕЛОМАХ ТЕЛ ПОЗВОНКОВ

Цель исследования. Оценка механических свойств тел позвонков после проведения стентопластики с биорезорбируемым костным цементом в сравнении с изолированным использованием полиметилметакрилатного и биорезорбируемого цементов в эксперименте на кадаверных моделях позвонков человека.

Материал и методы. Протестировано 12 интактных остеопоротических позвонков из грудопоясничного отдела позвоночника (Th12, L1) человека. Выполнены рентгенограммы для исключения повреждений позвонков. По результатам денситометрии подтверждено снижение минеральной плотности отобранных позвонков. Проведено механическое сдавление образцов для имитации компрессионного клиновидного перелома тела позвонка.

Результаты. Средний предел прочности интактных позвонков составил 3,2 MPa, позвонков после проведения вертебропластики цементом из полиметилметакрилата – 8,8 MPa, позвонков после проведения вертебропластики остеокондуктивным цементом – 3,0 MPa, после проведения стентопластики с введением остеокондуктивного цемента – 3,6 MPa.

Заключение. Благодоря использованию стента с биорезорбируемым цементом улучшены механические свойства сломанных тел позвонков в сравнении с интактными позвонками и позвонками с изолированным применением биорезорбируемого цемента. Полученные данные не противоречат возможности клинического применения стентопластики в комбинации с биорезорбируемым цементом при переломах тел позвонков.

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