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