txha caj qaum yog ib txheej txheej ntawm cov cuab yeej phais, implants, thiab accessories siv nyob rau hauv kev phais qaum. Cov tshuab no yog tsim los kho ntau yam kab mob ntawm tus txha caj qaum, nrog rau cov pob txha, deformities, thiab cov kab mob degenerative.