Case Report: Acute common peroneal nerve injury after posterior lumbar decompression surgery.

Spine surgery is a prevalently performed procedure. Some authors have proposed an age-related surge in surgical and general complications. During spine surgery, patients are placed in positions that are not physiologic, would not be tolerated for prolonged periods by the patient in the awake state, and may lead to complications.

Endoscopically assisted presigmoid retrolabyrinthine approach to the lateral mesencephalic sulcus: a cadaveric study with comparison to the variant supracerebellar infratentorial approaches.

The supracerebellar infratentorial (SCIT) approach is commonly used to gain access to the lateral mesencephalic sulcus (LMS), which has been established as a safe entry point into the posterolateral midbrain. This study describes a lateral variant of the SCIT approach, the supreme-lateral SCIT approach, for accessing the LMS through the presigmoid retrolabyrinthine craniectomy and quantitatively compares this approach with the paramedian and extreme-lateral SCIT approaches. Anatomical dissections were performed in four cadaveric heads.

Endoscopic transcanal transpetrosal approach to the petroclival region: a cadaveric study with comparison to the Kawase approach.

This study introduces expanded application of the endoscopic transcanal approach with anterior petrosectomy (ETAP) in reaching the petroclival region, which was compared through a quantitative analysis to the middle fossa transpetrosal-transtentorial approach (Kawase approach). Anatomical dissections were performed in five cadaveric heads. For each head, the ETAP was performed on one side with a detailed description of each step, while the Kawase approach was performed on the contralateral side.

Quantitative comparison of endoscopically assisted endonasal, sublabial and transorbital transmaxillary approaches to the anterolateral skull base.

Objectives: The aim of this anatomical study is to make quantitative comparison among three endoscopic approaches, encompassing contralateral endonasal transseptal transmaxillary transpterygoid approach (contralateral EEA), endoscopic sublabial transmaxillary transalisphenoid (Caldwell-Luc) approach and endoscopic transorbital transmaxillary approach through inferior orbital fissure (ETOA), to the anterolateral skull base for assisting preoperative planning.

Design & Participants: Anatomical dissections were performed in four adult cadaveric heads bilaterally using three endoscopic transmaxillary approaches described above.

Setting: Skull Base Laboratory at the National Defense Medical Center.

Endoscopic transorbital approach to anterolateral skull base through inferior orbital fissure: a cadaveric study.

Background: Endoscopic transorbital approach (eTOA) has been announced as an alternative minimally invasive surgery to skull base. Owing to the inferior orbital fissure (IOF) connecting the orbit with surrounding pterygopalatine fossa (PPF), infratemporal fossa (ITF), and temporal fossa, the idea of eTOA to anterolateral skull base through IOF is postulated. The aim of this study is to access its practical feasibility.

Impact of global spine balance and cervical regional alignment on determination of postoperative cervical alignment after laminoplasty.

The aim of this study is to analyze the combined impact of preoperative T1 slope (T1S) and C2-C7 sagittal vertical axis (C2-C7 SVA) on determination of cervical alignment after laminoplasty.Forty patients undergoing laminoplasty for cervical spondylotic myelopathy (CSM) with more than 2 years follow-up were enrolled. Three parameters, including cervical lordosis, T1S, and C2-C7 SVA, were measured by preoperative and postoperative radiographs.

Quantitative analysis of anatomical relationship between cavernous segment internal carotid artery and pituitary macroadenoma.

Cavernous segment internal carotid artery (CSICA) injury during endoscopic transsphenoidal surgery for pituitary tumor is rare but fatal. The aim of this study is to investigate anatomical relationship between pituitary macroadenoma and corresponding CSICA using quantitative means with a sense to improve safety of surgery.In this retrospective study, a total of 98 patients with nonfunctioning pituitary macroadenomas undergoing endoscopic transsphenoidal surgeries were enrolled from 2005 to 2014.

Uremic tumoral calcinosis causing atlantoaxial subluxation and spinal cord compression in a patient on continuous ambulatory peritoneal dialysis.

Uremic tumoral calcinosis (UTC) is a form of metastatic tissue calcification unique to dialysis patients, manifesting with amorphous and cystic masses containing calcium phosphate deposits in periarticular soft tissue. An involvement of the cervical spine with bone destruction is extremely rare in UTC. We describe a 44-year-old uremic female on long-term continuous ambulatory peritoneal dialysis who developed UTC in the peri-odontoid region with consequent atlantoaxial subluxation and spinal cord compression, featuring severe neck soreness, headache, and hypertension.

Use of spinous processes to determine the laterally angulated trajectory for placement of lateral mass screws: an image analysis.

Background: Lateral mass screw placement techniques have been broadly described in the literature. Differences in these techniques are related to entry points, lateral angulations and the cephalocaudal axis.

Aim: We evaluated 20 patients who underwent lateral mass screw placement between 2007 and 2009.

The misplacement of external ventricular drain by freehand method in emergent neurosurgery.

External ventricular drain (EVD) placement is one of the most basic and common neurosurgical procedure which most was performed by young neurosurgical trainees. This study is conducted to determinate the safe and accuracy of EVD placement by freehand method. About 129 EVD placements were evaluated in this study.

Problem of dural tail sign in glioblastoma multiforme?

A dural tail, which is a linear enhancement along the dura mater on contrast T1-weighted resonance images, is considered as a common and useful sign for distinguishing meningioma from other intracranial lesions. However, the specific nature of dura tail signs is still controversial. To the best of our knowledge, only seven cases of glioblastoma multiforme have been described with dural tail signs.