Abasasazi abathelekisa ababoneleli ngekheji ye-interbody badla ngokujonga ibakala le-PEEK kunye nexabiso ngeyunithi nganye, emva koko bacinge ukuba okuseleyo kunokutshintsheka. Akunjalo. Ikheji ye-TLIF okanye ye-PLIF sisixhobo esincinci, esintsonkothileyo sejiyometri ekufuneka sifumane izinto ezininzi ngaxeshanye - unyawo, ubude, i-angle ye-lordotic, isiphelo.