Biportalendoscopicspinalsurgery(BESS)isaminimallyinvasivespinalsurgery,whichisbasicallysimilartomicroscopicspinalsurgeryintermsoftheuseoffloatingtechniqueandtechnicallysimilartoconventionalpercutaneousendoscopicspinalsurgeryintermsoftheuseofendoscopicorarthroscopicinstruments.Usingtwoindependentportals(viewingandworking)andmaintainingacertaindistancefromthebonyandneuralstructuresallowcloseraccesstothetargetlesionthroughapanoramicviewbyfreehandlingofthescopeandinstrumentsratherthanthroughafixedviewbydockingintotheKambin’striangle.Minimallyinvasivesurgeryallowsforreduceddissectionandinevitablemuscleinjury,preservingstabilityandreducingrisksofrestabilization.Thepurposeoffusionsurgeryisthesameasthatofthethreesurgicaltechniquesstatedabove.Itswiderrangeofviewhelpstoover

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