TRAVMATIK TA’SIR SHAROITIDA YUZ SKELETI SUYAKLARINING ZICHLIGI, G‘OVAKLIGI VA KUCHLANISHLAR TAQSIMOTINING BIOMEXANIK BAHOLANISHI
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yuz skeleti; suyak zichligi; g‘ovaklik; chekli elementlar usuli; biomexanika; bosh miya travmasi##article.abstract##
Travmatik ta’sirga yuz skeleti suyaklarining biomexanik javobi ularning strukturaviy va morfologik xususiyatlariga bog‘liq. Tadqiqotning maqsadi kompyuter tomografiyasi va chekli elementlar usuli yordamida yuz skeleti suyaklarining zichligi, g‘ovakligi hamda mexanik kuchlanishlar taqsimotini baholashdan iborat bo‘ldi. Suyak zichligi kompyuter tomografiyasi ma’lumotlari asosida Hounsfield birliklarida aniqlangan. G‘ovaklik va g‘ovak o‘lchamlari taqsimoti uch o‘lchamli rekonstruksiya yordamida tahlil qilingan. Dinamik zarba ta’siri chekli elementlar modeli yordamida modellashtirilib, kuchlanishlar, bosh tezlanishi va Head Injury Criterion (HIC) ko‘rsatkichlari hisoblangan. Natijalar yuz skeletining turli anatomik qismlarida zichlik va g‘ovaklik ko‘rsatkichlari sezilarli darajada farqlanishini ko‘rsatdi. Peshona va yonoq suyaklarida eng yuqori zichlik va eng past g‘ovaklik qayd etilgan bo‘lsa, orbital kompleks va burun suyaklarida zichlik pastroq hamda g‘ovaklik yuqoriroq bo‘lgan. Chekli elementlar modellashtirish natijalari zichligi past va g‘ovakligi yuqori bo‘lgan hududlarda mexanik kuchlanishlar ko‘proq to‘planishini ko‘rsatdi. Zarba energiyasining ortishi HIC ko‘rsatkichlarining oshishi va bosh miya shikastlanishi xavfining ortishi bilan bog‘liq bo‘ldi. Olingan natijalar suyak mikroarxitekturasi travmatik ta’sir sharoitida yuz skeleti biomexanik javobining muhim omili ekanligini tasdiqlaydi. Kompyuter tomografiyasi va chekli elementlar modellashtirishini birgalikda qo‘llash jarohatlarga moyil hududlarni prognoz qilish hamda yuz-jag‘ travmalarini baholash samaradorligini oshirish imkonini beradi.
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