Φ5.0 Series Fixation Fixation Fixator - Distal radius frame

Ma distal radius fractures (DRFs) amapezeka mkati mwa 3 cm kuchokera kumbali yakutali ya radius, komwe ndiko kuthyoka kofala kwambiri kwa miyendo yakumtunda pakati pa amayi achikulire ndi amuna achikulire.Kafukufuku wasonyeza kuti DRFs amawerengera 17% ya fractures zonse ndi 75% ya fractures forearm.

Zotsatira zogwira mtima sizingapezeke mwa kuchepetsa mwachinyengo komanso kukonza pulasitala.Zophwanyikazi zimatha kusintha mosavuta pambuyo poyang'anira mosamala, ndipo zovuta, monga kupweteka kwa mafupa ndi kusakhazikika kwa dzanja, zikhoza kuchitika kumapeto.Opaleshoni imachitidwa pofuna kuchiza distal radius fractures kotero kuti odwala amatha kuchita masewera olimbitsa thupi okwanira osapweteka kuti abwezeretse ntchito yachibadwa pamene akuchepetsa chiopsezo cha kusintha kosasintha kapena kulemala.

Kasamalidwe ka ma DRF kwa odwala azaka zapakati pa 60 ndi kupitilira apo amachitidwa pogwiritsa ntchito njira zisanu zodziwika bwino izi: makina otsekera a volar, kusanja kwakunja, kutsekereza kunja, kukonza waya wa Kirschner, ndi pulasitala.

Odwala omwe akuchitidwa opaleshoni ya DRF ndikuchepetsa poyera komanso kukonza mkati amakhala ndi chiopsezo chachikulu chotenga matenda a bala ndi tendonitis.

Ma fixator akunja amagawidwa m'mitundu iwiri iyi: ophatikizana komanso osagwirizana.Chowongolera chakunja cholumikizira chimalepheretsa kuyenda kwaufulu kwa dzanja chifukwa cha kasinthidwe kake.Nonbridging kunja fixators ntchito kwambiri chifukwa kulola zochepa olowa ntchito.Zida zoterezi zingathandize kuchepetsa fracture mwa kukonza zidutswa za fracture mwachindunji;amalola kusamalira mosavuta kuvulala kwa minofu yofewa ndipo samaletsa kuyenda kwa dzanja lachilengedwe panthawi ya chithandizo.Chifukwa chake, zokonza zakunja zopanda malire zalimbikitsidwa kwambiri pamankhwala a DRF.M'zaka makumi angapo zapitazi, kugwiritsa ntchito zida zakunja zakunja (titaniyamu alloys) kwatchuka chifukwa cha biocompatibility yawo yabwino, mphamvu zamakina apamwamba komanso kukana dzimbiri.Komabe, zopangira zakunja zakunja zomwe zimapangidwa ndi zitsulo kapena titaniyamu zimatha kuyambitsa zinthu zakale kwambiri pamakina a computed tomography (CT), zomwe zapangitsa ofufuza kufunafuna zida zatsopano zopangira zakunja.

Kukonzekera kwamkati kutengera polyetheretherketone (PEEK) kwaphunziridwa ndikugwiritsidwa ntchito kwa zaka zoposa 10.Chipangizo cha PEEK chili ndi ubwino wotsatira pa zipangizo zomwe zimagwiritsidwa ntchito pokonza mafupa achikhalidwe: palibe zitsulo zosagwirizana ndi zitsulo, radiopacity, kusokoneza pang'ono ndi maginito a maginito (MRI), kuchotsa mosavuta implants, kupeŵa zochitika za "kuwotcherera kozizira", komanso makina abwino.Mwachitsanzo, ili ndi mphamvu yabwino yolimbikira, mphamvu yopindika, ndi mphamvu yamphamvu.

Kafukufuku wina wasonyeza kuti PEEK fixators ali ndi mphamvu, kulimba, ndi kuuma bwino kuposa zipangizo zopangira zitsulo, ndipo ali ndi mphamvu zotopa bwino13.Ngakhale zotanuka modulus wa PEEK zinthu ndi 3.0-4.0 GPa, akhoza kulimbikitsidwa ndi mpweya CHIKWANGWANI, ndi zotanuka modulus wake akhoza kukhala pafupi ndi fupa la cortical (18 GPa) kapena kufika mtengo wa titaniyamu aloyi (110 GPa) ndi kusintha kutalika ndi njira ya carbon fiber.Chifukwa chake, makina a PEEK ali pafupi ndi mafupa.Masiku ano, PEEK-based fixator yakunja idapangidwa ndikugwiritsidwa ntchito kuchipatala.