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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
Intraoperative management to prevent cerebrospinal fluid leakage after microvascular decompression: dural closure
Jae Sung Park1, Doo-Sik Kong, Jeong-A Lee
1Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-gu, Seoul 135-710, South Korea.
Abstract:
Our objective is to present surgical techniques used for the prevention of cerebrospinal fluid leakage after microvascular decompression (MVD). From January 1996 to February 2006, microvascular decompression for hemifacial spasm or trigeminal neuralgia was performed in 678 consecutive patients. In order to achieve watertight dural closure, several pieces of muscle were interposed between the dura when the dura was sutured; the dura was stitched with the addition of muscle pieces to plug the dural defect. In cases where the mastoid air cell system was opened, bone wax was used to seal the opened surface of the cavity, and a muscle patch was applied for the secondary sealing. The cranioplasty was performed using polymethylmethacrylate (PMMA) bone cement. Only 2 (0.29%) of 678 patients, who underwent MVD followed by dural closure using several muscle pieces to plug the potential dural defect, suffered from CSF leaks. Both were treated with lumbar subarachnoid drainage; neither patient required a lumbar peritoneal shunt or a revision operation. A watertight dural closure with the addition of muscle pieces in a "plugging" fashion, along with sealing the opened surface of the mastoid cavity using bone wax and cranioplasty using bone cement, provides a simple and effective technique for the prevention of CSF leakage after MVD.
Insights
Preventing cerebrospinal fluid (CSF) leaks after microvascular decompression (MVD) is crucial. A combined technique using muscle plugs for dural closure, bone wax, and bone cement effectively minimizes CSF leakage risks.
Area of Science:
- Neurosurgery
- Surgical Techniques
Background:
- Cerebrospinal fluid (CSF) leakage is a potential complication following microvascular decompression (MVD).
- Effective prevention strategies are vital for patient outcomes.
Purpose of the Study:
- To present surgical techniques for preventing CSF leakage after MVD.
- To evaluate the efficacy of a specific dural closure and sealing method.
Main Methods:
- Review of 678 MVD procedures for hemifacial spasm or trigeminal neuralgia (1996-2006).
- Techniques included watertight dural closure with muscle interposition, sealing mastoid air cells with bone wax, and polymethylmethacrylate (PMMA) cranioplasty.
- Muscle pieces were used to plug dural defects during suturing.
Main Results:
- Only 2 out of 678 patients (0.29%) experienced CSF leaks.
- Both patients were successfully treated with lumbar subarachnoid drainage.
- No revision surgeries or lumbar peritoneal shunts were required.
Conclusions:
- Watertight dural closure using muscle plugs is effective in preventing CSF leaks.
- Combining this with mastoid cavity sealing and PMMA cranioplasty offers a simple, effective prevention strategy.
- The described techniques significantly reduce the incidence of CSF leakage post-MVD.
