term ▁dis order ▁of ▁the ▁nerv ous ▁system ▁which ▁is ▁a ▁challeng ing ▁pain ▁problem ▁that ▁is ▁often ▁misunder stood ▁and ▁mis di agn osed . ▁ ▁R acz ▁c ath eter ▁and ▁R acz ▁procedure ▁ ▁R acz ' s ▁work ▁with ▁n erve ▁stim ul ators , ▁sp inal ▁cord ▁stim ul ators , ▁radio fre quency ▁therm oco ag ulation , ▁and ▁a ▁wide ▁range ▁of ▁other ▁pain ▁management ▁procedures ▁is ▁being ▁used ▁in ▁inter vent ional ▁pain ▁practices ▁throughout ▁the ▁world . ▁He ▁developed ▁new ▁designs ▁in ▁medical ▁equipment ▁and ▁devices . ▁ ▁In ▁ 1 9 8 2 , ▁R acz ▁designed ▁the ▁R acz ▁c ath eter , ▁a ▁flexible , ▁spring - w ound ▁c ath eter ▁with ▁a ▁small ▁flu or os cop ic ▁pro be . ▁In ▁ 1 9 8 9 , ▁he ▁developed ▁e pid ural ▁l ysis ▁of ▁ad hes ions , ▁a ▁minim ally ▁invas ive , ▁per cut aneous ▁procedure ▁also ▁known ▁as ▁the ▁" R acz ▁procedure ", ▁which ▁is ▁somewhat ▁similar ▁to ▁an ▁e pid ural . ▁It ▁is ▁used ▁to ▁treat ▁patients ▁with ▁chron ic ▁low ▁back ▁pain ▁due ▁to ▁post ▁lum bar ▁surg ery ▁synd rome , ▁sometimes ▁called ▁failed ▁back ▁surg ery , ▁which ▁involves ▁scar ▁t issue ▁that ▁has ▁formed ▁around ▁the ▁n erve ▁root . ▁It ▁is ▁also ▁used ▁to ▁treat ▁pro tr ud ing ▁or ▁h erni ated ▁dis ks , ▁f ract ures , ▁deg ener ation , ▁or ▁rad