Ku vekiwa ka nkolo i switirhisiwa leswi madokodela ya vuhandzuri ma swi tirhisaka hi nkarhi wa vuhandzuri ku tshungula ku onhaka, ku tiyisa ni ku tiyisa nkolo ni ku tlakusa ku hlanganisiwa. Swiyimo leswi talaka ku lava vuhandzuri bya ku hlanganisiwa ka switirhisiwa swi katsa spondylolisthesis (spondylolisthesis), vuvabyi bya chronic degenerative disc, ku tshoveka ka khombo, .