I.Rau lub hom phiaj cannulated ntsia hlau muaj lub qhov?
Lub tshuab cannulated ntsia hlau ua haujlwm li cas? Siv cov xov hlau nyias Kirschner (K-wires) uas tau muab drilled rau hauv cov pob txha kom ncaj cov ntsia hlau trajectories kom raug rau hauv cov pob txha me me.
Kev siv K-wires tsis txhob overdrilling qhov pilot qhov thiab tso cai rau fixation ntawm cov pob txha uas yuav tshwm sim thaum lub sij hawm ntsia hlau ntxig. Hollow cov cuab yeej thiab hollow screws yog muab tso rau hauv cov pob txha hla K-wires. Cannulated ntsia hlau fixation yog pab tau nyob rau hauv lub ncauj tsev menyuam nqaj qaum kom stabilize odontoid puas thiab kho atlantoaxial instability.
Cannulated screws muaj ntau qhov zoo dua piv rau cov tsis siv cov ntsia hlau: 1) K-wires coj txoj haujlwm ntsia hlau rau hauv cov pob txha;
2) K-wire trajectory ua rau reposition yooj yim yog hais tias tus thawj trajectory tsis zoo tagnrho;
3) K-xaim tso cai txuas txuas ntxiv ntawm cov pob txha tsis ruaj khov uas nyob ib sab;
4) K-wires tiv thaiv kev txav ntawm cov pob txha tsis ruaj khov thaum lub sij hawm ntsia hlau ntxig.
Cov teeb meem cuam tshuam nrog K-xaim (kev tawg, rov ua dua, thiab nce qib) tuaj yeem txo qis siv cov txheej txheem kev ua haujlwm zoo. Cov cuab yeej tshwj xeeb cannulated ntsia hlau tau tsim tshwj xeeb rau kev kho lub ncauj tsev menyuam sab sauv kom tso cai rau percutaneous drilling siv cov khoom siv ntev ntev, cov ntaub so ntswg sheaths, laum cov lus qhia, thiab K-wires ntev. Cov cuab yeej no tso cai rau kev xa cov cannulated screws ntawm lub kaum sab xis qis rau tus txha nraub qaum los ntawm cov ntaub so ntswg ntev ntev. Cannulated screws muaj qhov zoo tshaj plaws piv rau cov uas tsis yog cannulated screws rau fixation ntawm lub ncauj tsev menyuam nqaj qaum ntawm lub cev.
II.Qhov twg zoo dua cannulated screws lossis intrameduallary rau tes?
Ob leeg intramedullary rau tes thiab cannulated rau tes yog cov cuab yeej kho mob siv rau kev kho sab hauv ntawm pob txha. Lawv txhua tus muaj lawv tus kheej qhov zoo thiab tsim nyog rau ntau hom pob txha thiab kev kho mob.
| Hom | Qhov zoo |
| Intramedullary Nail | Lub intramedullary ntsia thawv fixation nyhuv ntawm ruaj khov fractures ntawm cov pob txha ntev yog zoo, nrog tsawg raug mob thiab los ntshav tsawg. Intramedullary ntsia thawv fixation belongs rau central fixation. Piv nrog rau cov hlau phaj, cov ntsia hlau intramedullary kuj tseem tuaj yeem tiv thaiv kev ncaj ncees ntawm daim nyias nyias, tiv thaiv kom tsis txhob muaj kev puas tsuaj rau pob txha, thiab ua lub luag haujlwm kom tsis txhob kis kab mob. |
| Cannulated Ntsia Hlau | Nws yog tsuas yog siv rau hauv cov cheeb tsam xws li femoral caj dab tawg, nrog tshwj xeeb fixation thiab compression teebmeem. Ntxiv mus, qhov kev puas tsuaj me me heev thiab tsis xav tau cov phaj hlau. |
III.Thaum twg siv cov cancellous vs cortical screws?
Cancellous screws thiab cortical screws yog ob hom orthopedic implants siv rau hauv cov pob txha kho, tab sis lawv yog tsim los rau ntau hom pob txha thiab muaj cov kev siv sib txawv:
Cancellous Screws tshwj xeeb yog tsim los siv rau hauv cov spongy, tsawg ntom, thiab trabecular pob txha cov ntaub so ntswg, feem ntau pom nyob rau ntawm qhov kawg ntawm cov pob txha ntev, xws li lub femur thiab tibia. Feem ntau siv nyob rau hauv cov cheeb tsam uas cov pob txha yog ntau ntxeem tau thiab tsawg ntom, xws li cov metaphyseal cheeb tsam ntawm cov pob txha ntev. Lawv feem ntau siv rau hauv cov txheej txheem cuam tshuam nrog tus txha nraub qaum, pelvis, thiab qee qhov ntawm lub xub pwg nyom thiab lub duav.
Cortical Screws yog tsim los siv rau hauv denser, cortical pob txha, uas ua rau txheej txheej ntawm cov pob txha feem ntau thiab yog ib qho nyuaj thiab muaj zog tshaj cov pob txha. Feem ntau siv nyob rau hauv cov xwm txheej uas yuav tsum tau muaj zog ntau dua thiab ruaj khov, xws li hauv kev kho cov pob txha tawg hauv diaphysis (ncej) ntawm cov pob txha ntev. Lawv kuj tau siv nyob rau hauv tej yam fixation li thiab daim hlau.
Hauv cov ntsiab lus, kev xaiv ntawm cancellous thiab cortical screws nyob ntawm hom pob txha raug kho thiab cov kev cai tshwj xeeb ntawm cov txheej txheem orthopedic. Cancellous screws yog haum rau softer, ntau ntxeem tau pob txha, thaum cortical screws yog zoo tagnrho rau denser, load-bearing pob txha.
Post lub sij hawm: May-09-2025
