Leakage of Cerebral Spinal Fluid (CSF) is still a significant problem in Endoscopic Endonasal Surgery (EES). The use of stiff buttress has not received enough attention, and there is no defined standard methodology for skull base closure. We introduced the Cruciate Embedding Fascia-Bone Flap (CEFB) technique using autologous bone graft to buttress the fascia lata attachment to the partially sutured skull base dural defect and evaluated its effectiveness in a subsequent case series of grade II-III CSF leaks in EES to highlight the functions of support and fixation from rigid buttress in reconstruction. According to this study, the novel CEFB approach may be able to stop postoperative CSF leak in EES. The outcomes showed that it can be utilized successfully without PNSF in appropriate situations or added to a PNSF with high compatibility when required. The following stage should involve a larger cohort and a better design to confirm its efficacy.
