World Neurosurg
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To investigate clinical parameters of anterior cervical discectomy and fusion (ACDF) treatment and outcomes using osseous allografts in different age groups, study the postoperative results of restoration of lordosis, and evaluate the utility of bone allografts for ACDF, including graft subsidence. ⋯ Osseous allografting can excellently restore cervical lordosis regardless of age and is an excellent graft choice for ACDF. Patients of advanced age with comorbidities should not be denied surgery.
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To report a technique for endoscopic cystoventriculostomy guided by preoperative navigated transcranial magnetic stimulation (nTMS) and tractography in a patient with a large speech eloquent arachnoid cyst. ⋯ The combination of nTMS and tractography supports the identification of a safe trajectory for cystoventriculostomy in eloquent arachnoid cysts.
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Case Reports
Moyamoya disease associated with tuberculum sellae meningioma and cavernous sinus hemangioma: case report.
Primary moyamoya disease associated with skull base tumors has been reported only rarely in the literature. Surgical treatment can be complicated due to the compensatory collateral circulation through meningeal and leptomeningeal anastomosis. A standard frontotemporal craniotomy may interrupt critical transdural anastomoses. ⋯ With careful bone flap design, moyamoya disease and skull base tumors can be treated simultaneously. Care should be taken to avoid interruption of critical dural-pial collaterals and injury to fragile moyamoya vessels.
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Hydrocephalus is a frequently encountered complication in the context of aneurysmal subarachnoid hemorrhage (aSAH). Here, we performed an external validation of the recently proposed postsubarachnoid shunt scoring (PS3) system, which aims to stratify patients presenting with aSAH based on their relative risk of requiring ventriculoperitoneal (VP) shunt insertion. ⋯ Data from this study validated the previously proposed PS3 system, which was found to more accurately predict shunt-dependent chronic hydrocephalus in patients with aSAH compared with other such systems in the neurosurgical literature, such as the chronic hydrocephalus ensuing from SAH score, Barrow Neurological Institute, and shunt dependency in aSAH systems.
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Hemodynamic factors impact cerebral aneurysm development and progression. Parent vessel architectural features, such as caliber, curvature, and angle, can affect downstream pressure and shear stress. ⋯ Ruptured status in bifurcation MCA aneurysms was associated with severity of proximal M1 stenosis and its proximity to the aneurysm neck, a novel risk factor, which acts by increasing aneurysm dome wall tension, and should be considered in investigations of rupture risk stratification.