Post-traumatic Transient Neurological Dysfunction: A Proposal for Pathophysiology.

Unexplained neurological deterioration is occasionally observed in patients with traumatic brain injuries (TBIs). We aimed to describe the clinical features of post-traumatic transient neurological dysfunction and provide new insight into its pathophysiology. We retrospectively collected data from patients with focal neurological deterioration of unknown origin during hospitalization for acute TBI for 48 consecutive months.

Atypical case of bow hunter's syndrome linked to aberrantly coursing vertebral artery: A case report.

Background: In bow hunter's syndrome (BHS), also known as rotational vertebral artery (VA) syndrome, there is dynamic/rotational compression of the VA producing vertebrobasilar insufficiency. Most occurrences involve atlantoaxial rather than mid-cervical VA compromise, the latter being rarely reported. Herein, we detail successful VA decompression at mid-cervical spine, given a departure from its usual course.

Development of Cloud-Based Telemedicine Platform for Acute Intracerebral Hemorrhage in Gangwon-do : Concept and Protocol.

We aimed to develop a cloud-based telemedicine platform for patients with intracerebral hemorrhage (ICH) at local hospitals in rural and underserved areas in Gangwon-do using artificial intelligence and non-face-to-face collaboration treatment technology. This is a prospective and multi-center development project in which neurosurgeons from four university hospitals in Gangwondo will participate. Information technology experts will verify and improve the performance of the cloud-based telemedicine collaboration platform while treating ICH patients in the actual medical field.

Can Transradial Mechanical Thrombectomy Be an Alternative in Case of Impossible Transfemoral Approach for Mechanical Thrombectomy? A Single Center's Experience.

Objective: Until recently, the transfemoral approach (TFA) was used as the primary method of arterial approach in acute ischemic stroke (AIS). However, TFA resulted in longer reperfusion times and worse outcomes in the mechanical thrombectomy (MT) of patients with complex aortic arches and significant carotid tortuosity. We found that the transradial approach (TRA) is a more favorable alternative approach for MT in such cases.

Rescue endovascular treatment for rapid regrowth of aneurysm remnant on middle cerebral artery trunk after unsuccessful surgical clipping in patients with a ruptured cerebral aneurysm: A report of two cases.

We report two rare cases treated with coiling after rapid regrowth (within a month) of an aneurysm remnant on the middle cerebral artery (MCA) trunk after incomplete surgical clipping. The first case, a 47-year-old man with subarachonoid hemorrhage (SAH) (Hunt-Hess grade II, Fisher grade III) underwent clipping of a ruptured saccular aneurysm with a wide neck on the right early frontal branch arising from the MCA trunk. Incomplete clipping with a 1 mm sized remnant neck was performed to avoid sacrificing the lenticulostriate artery.

Traumatic Subarachnoid Hemorrhage and Subdural Hematoma Due to Acute Rebleeding of a Pseudoaneurysm with Dural Arteriovenous Fistula Between Inferolateral Trunk of the Internal Carotid Artery and Middle Cerebral Vein.

Background: According to previous reports, pseudoaneurysms that are concomitant with a dural arteriovenous fistula (dAVF) are associated with penetrating trauma, blunt trauma, and skull fractures. Moreover, dAVFs between the inferolateral trunk of the internal carotid artery and middle cerebral vein are a rare disease manifestation. Pseudoaneurysms concomitant with dural arteriovenous fistulas (dAVF) are rare and traumatic pseudoaneurysms with dAVF typically developed slowly with less rebleeding than isolated traumatic aneurysms.

Spontaneous Regression of Aneurysm Remnant after Incomplete Surgical Clipping in a Patient with Ruptured Cerebral Aneurysm.

Cases of spontaneous regression of cerebral aneurysm remnant after incomplete surgical clipping have been rarely reported. This paper reports the regression of an aneurysm remnant after incomplete surgical clipping during postsurgical follow-up. A 50-year-old male presented with subarachnoid hemorrhage because of rupture of an anterior communicating artery aneurysm.

Clinical Aspects of Cerebral Venous Thrombosis: Experiences in Two Institutions.

Objective: Cerebral venous thrombosis (CVT) is a rare condition for which few clinical reviews have been conducted in Korea. Our aim was to investigate, risk factors, clinical presentations/courses, and outcomes of 22 patients treated for CVT at two centers.

Materials And Methods: A retrospective analysis was conducted, selecting 22 patients diagnosed with and treated for CVT at two patient care centers over a 10-year period (January 1, 2004 to August 31, 2015).

Analysis of Risk Factor for the Development of Chronic Subdural Hematoma in Patients with Traumatic Subdural Hygroma.

Objective: Although a high incidence of chronic subdural hematoma (CSDH) following traumatic subdural hygroma (SDG) has been reported, no study has evaluated risk factors for the development of CSDH. Therefore, we analyzed the risk factors contributing to formation of CSDH in patients with traumatic SDG.

Methods: We retrospectively reviewed patients admitted to Hallym University Hospital with traumatic head injury from January 2004 through December 2013.

Rescue mechanical thrombectomy using a retrievable stent for thromboembolic occlusion occurring during coil embolization of ruptured intracranial aneurysms.

Objective: To examine the safety and efficacy of mechanical thrombectomy using a retrievable stent for thromboembolic occlusion occurring during coil embolization of ruptured intracranial aneurysms.

Methods: Between June 2011 and June 2015, 631 consecutive patients with ruptured intracranial aneurysms underwent coil embolization at 6 hospitals. Among 53 patients who had thromboembolic complications, 15 patients harboring 15 aneurysms underwent rescue mechanical thrombectomy with a retrievable stent for the treatment of thromboembolic occlusion during the coiling of ruptured aneurysms.

The Effect of Lumbar Spinal Muscle on Spinal Sagittal Alignment: Evaluating Muscle Quantity and Quality.

Background: The majority of earlier studies of the parameters of sagittal balance did not consider the influence of spinal muscles on spinal sagittal alignment.

Objective: To analyze the relationship between the paraspinal muscle (quantity and quality) and sagittal alignment in elderly patients.

Methods: We reviewed 50 full-spine lateral standing radiographs and lumbar magnetic resonance images of elderly patients at a single center.

Thrombus remnant despite intra-arterial thrombolysis for thrombus formation during endovascular treatment of ruptured cerebral aneurysms: Does it harm?

Background: The fate and safety of thrombus remnant despite intra-arterial thrombolysis for unexpected thrombus formation has rarely been reported.

Methods: From January 2010 to May 2015, 131 consecutive patients with ruptured intracranial aneurysms were treated by endovascular methods at our institution. Among the 21 patients (16%) treated by intra-arterial thrombolysis for the thrombus formation during the procedure, nine patients (nine aneurysms) suffered from thrombus remnant.

The Effect of the Pedicle-Facet Angle on Degenerative Cervical Spondylolisthesis.

Objective: To measure the orientation of the facet joints of cervical spine (C-spine) segments in the sagittal plane, known as the pedicle-facet (P-F) angle, and to use these measurements to evaluate the relationship between the P-F angle and the amount of vertebral anterolisthesis in patients with degenerative cervical spondylolisthesis (DCS).

Methods: A retrospective case-control study was performed including 30 age- and sex-matched patients with DCS and 30 control participants. Anterior-posterior and lateral view radiographs of the C-spine were obtained in a standing position.

The Effect of Different Pillow Heights on the Parameters of Cervicothoracic Spine Segments.

Objective: To investigate the effect of different pillow heights on the slope of the cervicothoracic spine segments.

Methods: A prospective analysis of data from 16 asymptomatic adults (aged 20 to 30 years) was carried out. Exclusion criteria were history of injury or accident to the cervicothoracic spine, cervicothoracic spine surgery, or treatment for neck symptoms.

T1 slope and degenerative cervical spondylolisthesis.

Study Design: Retrospective analysis.

Objective: The main objectives of this study were to analyze and compare cervical sagittal parameters, including the T1 slope, in a population of 45 patients with degenerative cervical spondylolisthesis (DCS) and to compare these patients with a control group of asymptomatic population.

Summary Of Background Data: Sagittal balance in the cervical spine is as important as the pelvic incidence and is related to the concept of T1 slope.

Spinal subdural hematoma following meningioma removal operation.

Although blood contamination of cerebrospinal fluid (CSF) after an intracranial operation can occur, the development of a symptomatic spinal hematoma after craniotomy has been anecdotally reported and it is uncommon reported after a supratentorial meningioma removal operation. We report a case of spinal subdural hematoma following a supratentorial meningioma removal operation and discuss the mechanism of spinal subdural hematoma (SSDH) development. A 54-year-old woman presented with lumbago and radicular pain on both legs 4 days after a right parietooccipital craniotomy for meningioma removal.

Is it possible to evaluate the parameters of cervical sagittal alignment on cervical computed tomographic scans?

Study Design: Retrospective study.

Objective: The purpose of this study was to analyze the relationship of the parameters of cervical sagittal alignment between those obtained from cervical CT and those obtained from radiography, as well as to determine which parameter would help predict physiological lordosis of the cervical spine.

Summary Of Background Data: Sagittal balance in the cervical spine is as important as the pelvic incidence and is related to the concept of T1 slope.