An External Fixator System ndi chipangizo chachipatala chomwe chimagwiritsidwa ntchito kuti chikhazikike komanso kuti mafupa asasunthike ngati atasweka, kupunduka kwa mafupa, kapena kupanga mafupa. Amakhala ndi zikhomo, zomangira, ndodo ndi zomangira zomwe zimakhazikika kunja kwa thupi ndikulumikizana ndi fupa kudzera pakhungu ndi minofu yofewa.
Dongosololi limapereka kukhazikika kolimba popanda kufunikira kuyika kwamkati, kupangitsa kuti ikhale yothandiza kwambiri pazovuta zothyoka, matenda omwe amatha kutenga kachilomboka, komanso njira zotalikitsa miyendo.