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  • Title: Endoscopic repair of high-flow cranial base defects using a bilayer button.
    Author: Luginbuhl AJ, Campbell PG, Evans J, Rosen M.
    Journal: Laryngoscope; 2010 May; 120(5):876-80. PubMed ID: 20422679.
    Abstract:
    OBJECTIVES/HYPOTHESIS: Repair of the skull base still begins with a direct repair of the dural defect. We present a new button closure for primary repair of the dura for high flow defects. STUDY DESIGN: Retrospective review. METHODS: We reviewed our 20 cases of primary button grafts and compared the results to the previous 20 high-flow open-cistern cerebrospinal fluid (CSF) cases. Subjects were excluded if they had no violation of the arachnoid space or potential for low-flow CSF leak. The button is constructed so that the inlay portion is at least 25% larger than the dural defect, and the onlay portion is just large enough to cover the dural defect. The two grafts are sutured together using two 4-0 Neurolon sutures and placed with the inlay portion intradurally and the onlay portion extradurally. RESULTS: The button graft repair of open-cisternal defects had a drop in CSF leak complications to 10% (2/20), and these two leaks were repaired with the button technique as the salvage surgery. This is a significant improvement over the 45% leak rate in the prebutton graft group (P < .03). In our button graft group we used nasoseptal flaps on 16/20 repairs, and 1/2 repairs that leaked in the button group did not have a nasoseptal flap. Lumbar drains were used in approximately 38% in both groups (P = .83). CONCLUSIONS: The button graft can be used in conjunction with the nasal septal flap or as a stand-alone repair with good results reducing the postoperative leak rate to 10% for high-flow CSF repairs. Laryngoscope, 2010.
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