Chiyambi cha Zomangira za Polyaxial-I

Chophimba cha Polyaxial PedicleZasintha kwambiri ntchito ya opaleshoni ya msana, zomwe zathandiza madokotala ochita opaleshoni kukhala osinthasintha komanso okhazikika kwambiri pochita opaleshoni yokonza msana. Zipangizo zatsopanozi zapangidwa kuti zigwirizane ndi ma angles osiyanasiyana oyika screw, zomwe zimapangitsa kuti msana ukhale wosinthasintha komanso wokonzedwa bwino.

Ubwino waukulu wazomangira za pedicle za spine titaniumIli ndi kapangidwe kake kapadera kofanana ndi mpira ndi soketi. Izi zimathandiza kuti screw izungulire mkati mwa ndodo, zomwe zimathandiza dokotala kusintha ngodya yake akangoyiyika. Kusinthasintha kumeneku ndikofunikira kwambiri pochiza matenda ovuta a msana, komwe kuyiyika bwino ndikofunikira kuti chithandizo chiyende bwino. Chifukwa cha ma screw a polyaxial amalola kusintha pambuyo poyiyika, zimathandiza kuchepetsa chiopsezo cha zovuta zokhudzana ndi kusakhazikika bwino.

Kuwonjezera pa kukhala ndi luso lotha kusintha zinthu,screw ya pedicleimaperekanso kukhazikika kwakukulu kuposa zomangira zachikhalidwe za monoaxial. Kuthekera kotseka screw mbali zosiyanasiyana kumawonjezera kulimba kwa kapangidwe kake, komwe ndikofunikira kwambiri kuti msana ukhale wolimba panthawi yochira. Izi ndizofunikira kwambiri panthawi ya opaleshoni yolumikiza msana, komwe cholinga chake ndikulimbikitsa kukula kwa mafupa ndikupangitsa kuti mafupa azilumikizana bwino.

M'mimba mwake wadongosolo la screw ya pedicle ya msanazimadalira momwe wodwalayo amagwiritsira ntchito komanso zofunikira pa thupi lake. Nthawi zambiri, iziscrew ya pedicle ya msanaChimakula kuyambira 4.0 mm mpaka 7.0 mm. Kusankha kukula kwake n'kofunika kwambiri, chifukwa kumakhudza mphamvu ya sikrufu, kukhazikika kwake, komanso mphamvu zake zonse za biomechanical.Chokulungira cha msana cha pedicleMafupa okhala ndi mainchesi akuluakulu nthawi zambiri amapereka mphamvu ndi kukhazikika kwakukulu, zomwe zimapangitsa kuti akhale oyenera odwala omwe ali ndi mafupa ambiri kapena omwe amafunikira kukhazikika kolimba.