World Neurosurg
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To contrast the accuracy of C2 navigation template-assisted versus freehand pedicle and/or pars screw fixation in high-risk cases where a high-riding vertebral artery (VA) or narrow pedicle and complex deformities were associated. ⋯ The current study suggests that navigational template-assisted pedicle screws are risky for high-risk individuals with abnormal anatomy, such as those with a high-riding vertebral artery, a narrow pedicle, and complex abnormalities, and alternative C2 pars screws may be a reliable option for such individuals.
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Transcranial removal of the anterior clinoid process (ACP) provides access to the clinoidal segment of the internal carotid artery as well as superolateral decompression of the optic canal. Endoscopic endonasal approaches (EEAs) can access the entire medial and inferior portions of the optic canal, but no data exist to support what proportion of the anterior clinoid could be safely resected via an EEA. ⋯ Using the safe route above the optic canal, removal of 21% of the ACP can be achieved via EEA. Although substantially more of the ACP can be drilled by accessing the optic strut, the benefits of pursuing additional removal must be weighed against the significant risks of drilling in this narrow corridor bordered by the internal carotid artery, the third cranial nerve, and the optic nerve.
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Neuromuscular instability of the lumbar spine resulting from impaired motor control and degeneration of the multifidus muscle is a known root cause of refractory chronic low back pain (LBP). An implantable neurostimulation system that aims to restore multifidus motor control by stimulating the L2 medial branch of the dorsal ramus thereby relieving pain and reducing disability has demonstrated clinically significant benefits in the clinical trial setting. The 1-year results of a single-site real-world cohort study are presented. ⋯ Restorative neurostimulation is a new treatment option for well-selected patients with refractory chronic LBP. Clinically meaningful improvements in pain, disability, and quality of life demonstrated in routine clinical practice are consistent with published results of controlled trials.
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Evolution of keyhole techniques in aneurysm surgery allows for definitive surgical management of aneurysmal pathology with little disruption of normal surrounding tissue. While experienced vascular neurosurgeons are increasingly applying keyhole techniques to unruptured aneurysms, experience with ruptured aneurysms is limited. ⋯ The present series supports the concept that sound technical execution of keyhole approaches, even in the setting of acutely ruptured cerebral aneurysms, is a viable option for clipping of intracranial aneurysms.
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Treatment of multiple recurrent chronic subdural hematomas (CSDH) is challenging. Identification of specific risk factors for multiple recurrences may allow a higher degree of personalized treatment, including closer postoperative follow-up, detailed prognostication, and a more aggressive initial surgical strategy, such as craniotomy, adjuvant embolization of the middle meningeal artery, or adjuvant medical treatment, such as steroids. The aim of this study was to identify pretreatment risk factors for a second recurrence of CSDH (re-re-CSDH) and risk factors for developing re-re-CSDH once operated for the first recurrence. ⋯ We found similar independent risk factors for re-CSDH and re-re-CSDH, and for re-re-CSDH once treated for re-CSDH. Hence, it was not possible to identify specific risk factors for patients at risk of re-re-CSDH at the time of the primary diagnosis.