Φ5.0 Series Yekunze Fixation Fixator - Distal radius furemu

Distal radius fractures (DRFs) inoitika mukati memasendimita matatu kubva kure kure kweradius, inova ndiyo inonyanya kutsemuka mumakumbo epamusoro pakati pevakadzi vakuru uye varume vechidiki vakuru.Zvidzidzo zvakashuma kuti DRF inoverengera 17% yezvose zvakaputsika uye 75% yekuputsika kwepamberi.

Mhedzisiro inogutsa haigone kuwanikwa nekudzikisira manipulative uye plaster fixation.Kutyoka uku kunogona kuchinjika zviri nyore pachinzvimbo mushure mekutonga kwekuchengetedza, uye matambudziko, akadai sekushungurudza bhonzo rakabatana uye wrist joint kusagadzikana, anogona kuitika munguva yekupedzisira.Kuvhiyiwa kunoitwa kurapa distal radius fractures kuitira kuti varwere vagone kuita nhamba yakakwana yezviitwa zvisingarwadzi kuti vadzorere basa rakajairwa uku vachideredza njodzi yekuchinja kwekuchinja kana kuremara.

Kutungamirirwa kweDRFs muvarwere vane makore makumi matanhatu uye kupfuura kunoitwa uchishandisa nzira shanu dzinotevera dzinozivikanwa: volar locking plate system, non-bridging external fixation, bridging external fixation, percutaneous Kirschner wire fixation, uye plaster fixation.

Varwere vari kuvhiyiwa DRF nekudzikisira kwakavhurika uye kugadziriswa kwemukati vane njodzi yakanyanya yekutapukirwa neronda uye tendonitis.

Zvigadziriso zvekunze zvakakamurwa kuva marudzi maviri anotevera: kuyambuka-kubatanidzwa uye kusiri bhiriji.A cross-articular yekunze fixator inorambidza kufamba kwemahara kwewrist nekuda kwekugadzirisa kwayo.Nonbridging ekunze fixator anoshandiswa zvakanyanya nekuti anobvumira mashoma majoini kuita.Midziyo yakadaro inogona kufambisa kuderedzwa kwekuputsika nekugadzirisa zvimedu zvekuputsika zvakananga;vanobvumira kutungamira kuri nyore kwekukuvadzwa kwetishu dzakapfava uye havadzivise kufamba kwechiwoko chemaoko panguva yekurapa.Naizvozvo, nonbridging ekunze fixator akakurudzirwa zvakanyanya kurapwa kweDRF.Mumakumi mashoma emakore apfuura, kushandiswa kwechinyakare chekunze fixators (titanium alloys) yakawana mukurumbira, nekuda kweiyo yakanakisa biocompatibility, yakakwira mechanical simba uye kurwisa ngura.Nekudaro, izvo zvechinyakare zvekunze zvigadziriso zvinogadzirwa nesimbi kana titanium zvinogona kukonzeresa artifacts mu computed tomography (CT) scans, izvo zvaita kuti vaongorori vatsvage zvitsva zvekugadzirisa kunze.

Kugadziriswa kwemukati kunobva pa polyetheretherketone (PEEK) yakadzidziswa uye yakashandiswa kweanopfuura makore gumi.Iyo PEEK mudziyo ine zvinotevera zvakanakira pamusoro pezvinhu zvinoshandiswa zvechinyakare orthopedic fixation: hapana simbi allergies, radiopacity, yakaderera kukanganiswa nemagnetic resonance imaging (MRI), kubviswa kuri nyore kuisirwa, kudzivirira "inotonhora welding" chiitiko, uye zvirinani zvemuchina.Semuenzaniso, ine simba rakanaka rekusimba, simba rekukotama, uye simba rekuita.

Zvimwe zvidzidzo zvakaratidza kuti PEEK fixator ine simba riri nani, kuomarara, uye kuomarara kupfuura simbi inogadzirisa midziyo, uye vane simba rekuneta13 riri nani.Kunyangwe iyo elastic modulus yePEEK zvinhu iri 3.0-4.0 GPa, inogona kusimbiswa nekabhoni fiber, uye elastic modulus yayo inogona kuva padyo neiyo cortical bone (18 GPa) kana kusvika kukosha kwetitanium alloy (110 GPa) ne. kushandura kureba uye kutungamira kwekabhoni fiber.Naizvozvo, ma mechanic properties ePEEK ari padyo neaya emapfupa.Mazuva ano, iyo PEEK-yakavakirwa kunze fixator yakagadzirwa uye inoshandiswa mukiriniki.