Orthopedic screws thiab kev ua haujlwm ntawm cov ntsia hlau

Ib tug ntsia hlau yog ib yam khoom uas converts rotational motion rau hauv linear motion. Nws muaj cov qauv xws li cov txiv ntoo, cov xov, thiab cov ntsia hlau ntsia hlau.

Txoj kev faib cov screws muaj ntau heev. Lawv tuaj yeem muab faib uacortical pob txha screwsthiabCancellous pob txha screwsRaws li lawv siv,semi-threaded screwsthiabtag nrho-threaded screwsraws li lawv cov xov hom, thiabxauv screwsthiab Cannulatedntsia hlauraws li lawv tsim. Lub hom phiaj kawg yog kom ua tiav kev kho kom zoo. Txij li thaum lub advent ntawm self-locking screws, tag nrho cov uas tsis yog-locking screws tau raug xa mus rau raws li "hom screws."

Common uascrews thiab locking screws

Ntau hom screws: a. tag nrho threaded cortical pob txha ntsia hlau; b. ib nrab threaded cortical pob txha ntsia hlau; c. tag nrho threaded cancellous pob txha ntsia hlau; d. ib nrab threaded cancellous pob txha ntsia hlau; e. xauv ntsia hlau; f. self-tapping ntsia hlau.
Orthopedic screws thiab func8

Cannulated ntsia hlau

Kev ua haujlwm ntawm cov ntsia hlaus

1.phaj ntsia hlau

Fastens lub phaj rau cov pob txha, ua kom lub siab los yog kev sib txhuam.

2. Lajntsia hlau

Cov ntaub ntawv compression ntawm cov pob txha tawg siv cov zawv zawg qhov, ua tiav qhov ruaj khov ruaj khov.

3.Txoj hauj lwm ntsia hlau

Tuav txoj hauj lwm ntawm cov pob txha tawg tsis muaj compression. Piv txwv xws li tibiofibular screws, Lisfranc screws, thiab lwm yam.

4.Xauv ntsia hlau

Cov xov ntawm lub hau ntsia hlau tuaj yeem phim cov lus sib txawv ntawm cov hlau phaj qhov kom ua tiav qhov xauv

5.Interlocking ntsia hlau

Siv ua ke nrog intramedullary rau tes kom tswj cov pob txha ntev, kev sib tw, thiab kev sib hloov ruaj khov.

6.Anchor ntsia hlau

Ua hauj lwm raws li ib tug fixation point rau steel hlau los yog suture.

7.Push-rub ntsia hlau

Ua haujlwm raws li qhov chaw kho ib ntus rau kev rov kho cov pob txha tawg los ntawm txoj kev traction / siab.

8. rov pib duantsia hlau

Ib hom ntsia hlau uas tau ntxig los ntawm lub qhov steel phaj thiab siv los rub cov tawg tawg kom ze rau ntawm lub phaj kom txo tau. Nws tuaj yeem hloov tau lossis tshem tawm tom qab qhov tawg tau txo qis.