Fig. 3From: Effects of cruciate embedding fascia-bone flap technique on grade II–III cerebral spinal fluid leak in endoscopic endonasal surgeryRepresentative intraoperative images of CEFB variants. a Two separated bone flap grafts are embedded at the planum sphenoidale and sellar floor respectively, buttressing the fascia in different directions on angled planes. b The bone graft is tailored into narrow strips and then wedged at intervals onto the defect for economical use of the limited bone graft harvest. BF bone flap, FL fascia lataBack to article page