Mhedzisiro yesaha blade geometry pakatanga kutsemuka uye kupararira paHTO lateral cortical hinges.

High tibial osteotomies (HTO) inoita basa rakakosha mukugadzirisa uye kuporeswa kwemamwe maitiro emapfupa. Nekudaro, hinge isina kusimba inopa njodzi huru yekukundikana. Ichi chidzidzo chine chinangwa chekuongorora kana iyo geometry yekucheka kumucheto kweshizha resaha inokanganisa kutanga kwekutsemuka kana kupararira pahinge, uye kana mamwe ekucheka egeometries anogona kudzikisa njodzi iyi.

Zvishandiso uye Nzira:

A finite element modhi yakagadzirwa uchishandisa transversely isotropic elastic bone zvivakwa. Zvitatu zvakasiyana-siyana zvekucheka mageometries (rectangular, U-shaped, uye V-shaped) akaenzaniswa. Iyo 1.27 mm gobvu yesaha yekucheka yakagadzirwa, ichisiya 1 cm yakachinjika cortical hinge. Mutoro wakaiswa kuvhura osteotomy kwe1 sekondi. Mienzaniso miviri yakaitwa, imwe isina kutanga kutsemuka uye imwe ine 15 ° inokwira kumusoro yakatsetseka, kuongorora kushushikana kwenzvimbo uye kuverenga kusunungurwa kwesimba rehinge.

Results:

Mukuenzanisa pasina kutanga kwekutsemuka, rectangular saw blade geometry yairatidza kudzikira kwekushushikana kwenzvimbo. Nekudaro, mukuenzanisa neiyo crack initiation, iyo U-yakaita geometry yakaratidza yakaderera yenzvimbo yekushushikana kudzika uye yakaderera mwero wekusunungurwa kwesimba. Izvi zvinoreva kuti iyo U-yakaita geometry kashoma kutanga uye kuparadzira makatsemuka pane lateral cortical hinges.

Hurukuro/

Kunyange zvazvo chidzidzo ichi chinoshandisa kombiyuta yekuenzanisa uye ine painogumira, inoratidza kuti U-shaped cutting edge geometry ndiyo inonyanya kushanda mukuderedza njodzi yekutanga kwekuputika kana kupararira nekuda kwekuderera kwayo simba rekusunungurwa kwesimba. Kuwana uku kunotsigira fungidziro yedu yekutanga uye inosimbisa kukosha kwekufunga kucheka edge geometry muHTO maitiro.

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Mukupedzisa, chidzidzo ichi chinosimbisa basa rakakosha rekucheka kumucheto geometry mukubudirira kweakakwira tibial osteotomies. Nekusarudza yeU-shaped cutting edge, vanachiremba vemapfupa vanogona kuderedza dambudziko rekutanga kwekuputika kana kupararira, zvichiita kuti zvive nani migumisiro yevarwere uye kubudirira kwese kwemaitiro.

Mhedzisiro yesaha blade geometry pakatanga kutsemuka uye kupararira paHTO lateral cortical hinges chinhu chakakosha kutariswa paunenge uchiita maitiro emapfupa. Verenga kuti udzidze zvakawanda nezvekuti zvakasiyana sei madhizaini emasaha anogona kukanganisa kutendeseka kwebhonzo panguva yekuvhiyiwa.