Bone Sandwich Closure Technique for Posterior Fossa Craniectomy.

 Surgery of posterior fossa including cerebellopontine (CP) angle involves either craniectomy or craniotomy. While there has been precedence of craniotomy in recent practice, the preferred access in resource-strapped centers still remains been craniectomy. Although the latter offers an excellent exposure, it is believed to carry increased risk of postoperative pseudomeningocoele and cerebrospinal fluid (CSF) leak compared with craniotomy.  We have suggested a technique by which after standard craniectomy for the posterior fossa surgeries the bony defect is covered by Gelfoam bone sandwich (GBS) technique. We studied this technique over a period of 25.6 years in 1,028 patients.  We analyze the risk of pseudomeningocoele and CSF leak in our patients using GBS technique and reviewed literature to compare our outcomes with standard craniotomy and craniectomy procedures.