Validation of the modified radiosurgery-based arteriovenous malformation score in a linear accelerator radiosurgery experience in Hong Kong.

The modified radiosurgery-based arteriovenous malformation (AVM) score (modified AVM score or Pollock-Flickinger AVM score [PFAS]) is a simplified grading system developed to predict outcome after gamma knife radiosurgery for cerebral AVM. The purpose of this study was to test the PFAS in a cohort of patients managed with linear accelerator (LINAC) radiosurgery. We analyzed 70 consecutive patients with cerebral AVM treated with LINAC radiosurgery in Hong Kong.

Changes of cognitive functioning following mild traumatic brain injury over a 3-month period.

Primary Objective: To examine the cognitive functioning in patients with complicated mild traumatic brain injury immediately post-injury and at 1 and 3 months post-injury. RESEARCH DESIGN, METHODS, AND PROCEDURES: Between-group comparisons were adopted for this study. Specifically, both patients and healthy controls were administered neuropsychological assessments measuring attention, memory and executive functions at three time points.

Bryan artificial cervical disc arthroplasty in a patient with Klippel-Feil syndrome.

Technological advances have made more options available for surgical intervention in spinal disorders. From spinal fusion to artificial disc implantation, these advancements have brought great benefits, allowing preservation of spinal motion and flexibility after intervertebral discectomy. Yet the use of artificial discs as a treatment for congenital spinal disorders has been documented in only a handful of publications.

The comparative impact of video consultation on emergency neurosurgical referrals.

Objective: Neurosurgical resources are concentrated in tertiary referral centers, whereas emergencies identified from district general hospitals are traditionally referred by telephone consultation (TC). Recent advances in communication technology offer the alternative options of teleradiology (TR) and video consultation (VC). This study aimed to determine the differences among these three consultation methods on the basis of their process-of-care indicators, clinical outcomes, and cost-effectiveness.

Cervical arthroplasty with the Bryan disc.

Cervical arthroplasty is a promising nonfusion alternative for the treatment of degenerative disc disease. After anterior cervical discectomy for neurological decompression, the intervertebral space is reconstructed by use of a metal and polymer prosthesis, allowing semiconstrained motion in multiple planes. This approach allows for preservation of cervical motion, potentially reducing the risk of transitional-level disease.

Apolipoprotein e genotype and outcome in aneurysmal subarachnoid hemorrhage.

Background And Purpose: Active management of ruptured intracranial aneurysm in subarachnoid hemorrhage is indicated in patients with favorable prognosis. Outcome prediction is based on patient characteristics and clinical and radiological factors. Current clinical grading scales are imprecise, with low interobserver reproducibility.