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Fırat Üniversitesi Tıp Fakültesi Nöroşirurji (FÖ,AA), Radyodiagnostik (SS,MC) A.B.D., Elazığ
İstanbul 100. Yıl Fizik Tedavi ve Rehabilitasyon Hastanesi Nöroşirürji Bölümü (CST), İstanbul
Şişli Etfal Hastanesi Patoloji Kliniği (CD, İstanbul
Abant izzet Baysal Üniversitesi, Düzce Tıp Fakültesi Nöroşirürji A.B.D. (MİZ), Bolu The failed back surgery syndrome could be seen after the lumbar disc herniation operations. This paper examines the effects of polytetrafluoroethylene graft on preventing the peridural fibrosis at this study. The space between L5 and SI levels has been exposed with the posterior approach on 10 adult dogs. Total laminectomy has been made at the levels of L5-6, L6-7, and L7-S1. The spaces were studied as control, ligamentum flavum and pediculated fat graft, and polytetrafluoroethylene graft levels, respectively. The computed tomographies of the dogs were taken at the end of 3 months. The results of the histopathological assessment of the peridural fibrosis degree were +3 degree at all control levels, +2 degree at 8 and +3 degree at 2 of the levels of the ligamentum flavum and pediculated fat graft spaces, and +2 degree at 5 and +1 degree at the other 5 levels of the polytetrafluoroethylene graft spaces. The laminectomy membrane was seen on computed tomographic scans of the first and second levels. It was concluded that polytetrafluorothylene graft was experimentally succesful for preventing the invasion of dura and nerve roots by peridural fibrosis at the end of 3 months' period. Anahtar Kelimeler : Duramater, fat graft, laminectomy membrane, peridural fibrosis, polytetrafluoroethylene graft