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Figure 2: Illustration of supraorbital frontal sinusotomy. (a) Skin incision along the medial third of the eyebrow. (b) Elevation of outer table of frontal sinus with a chisel and hammer. (c) Note that the bone flap is not completely detached all around and is still attached to the pericranium on one end. (d) Frontal sinus mucosa is removed; site of CSF leak is identified and repaired with fascia lata, fat and fibrin sealant. (e) Bone flap is replaced and secured to the edges. (f) Pericranium, if replaced over the bone and surgical wound, is closed in layers

Figure 2: Illustration of supraorbital frontal sinusotomy. (a) Skin incision along the medial third of the eyebrow. (b) Elevation of outer table of frontal sinus with a chisel and hammer. (c) Note that the bone flap is not completely detached all around and is still attached to the pericranium on one end. (d) Frontal sinus mucosa is removed; site of CSF leak is identified and repaired with fascia lata, fat and fibrin sealant. (e) Bone flap is replaced and secured to the edges. (f) Pericranium, if replaced over the bone and surgical wound, is closed in layers