OBJECT The choice of surgical technique for decompressive surgery in patients with Chiari I malformation is controversial. Good preliminary postoperative outcomes have been achieved in patients with Chiari I malformation (without syringomyelia) after using a dura-splitting technique. The authors evaluated safety, resource use, and early outcome after this surgery in patients without syringomyel...

Here we present a patient with a Type I Chiari malformation who was receiving buprenorphine for chronic pain who underwent two separate urogynecologic procedures for removal of vaginal mesh with two different pain management regimens. For the first procedure at an outside hospital, the patient's usual dose of buprenorphine (8 mg sublingual every 8 hours) was continued up through her surgery and...

BACKGROUND Chiari-like malformation in the Cavalier King Charles Spaniel is a herniation of the cerebellum and brainstem into or through the foramen magnum. This condition predisposes to Syringomyelia; fluid filled syrinxes within the spinal cord. The resulting pathology in spinal cord and cerebellum create neuropathic pain and changes in gait. This study aims to quantify the changes in gait fo...

BACKGROUND To develop evidence-based treatment guidelines for Chiari malformation type 1 (CM-1), preoperative prognostic indices capable of stratifying patients for comparative trials are needed. OBJECTIVE To develop a preoperative Chiari Severity Index (CSI) integrating the clinical and neuroimaging features most predictive of long-term patient-defined improvement in quality of life (QOL) af...

Arnold-Chiari malformations (ACM) represent a constellation of related congenital anomalies at the base of the brain. ACM is a very rare disorder with displacement of the cerebellar tonsils caudally into the foramen magnum. To date, the cause of this malformation is unknown, however, there is some evidence for a defect of the paraxial mesoderm resulting in a shallow posterior cranial fossa and ...

Chiari malformations (CM) are a group of posterior fossa abnormalities affecting the cerebellum, brainstem and the spinal cord. An in-depth understanding of the radiological findings is highly imperative for the early accurate diagnosis of CM in the developing fetus and the adult alike. We report here a case each of Type I and II CM presenting with the classical MRI imaging findings of CM Type ...

This article reports the largest familial aggregation of Chiari malformation in a single family to date as reported in the literature. This study is a retrospective case series of a family of whom five individuals have a confirmed case of Chiari malformation and three additional individuals have Chiari signs and symptoms. This contribution further supports the implication of genetics in the tra...

BACKGROUND The association of hemifacial spasm (HFS), Chiari type I malformation (CIM) and neurofibromatosis type 1 (NF1) has not been described yet. CASE REPORT We report the case of a 31-year-old woman with NF1 who developed a right-sided HFS. On magnetic resonance imaging (MRI) a CIM was seen without syringomyelia. The patient has been successfully treated with botulinum toxin type A injec...

BACKGROUND AND PURPOSE Previous studies have quantified CSF flow in patients with Chiari I at the foramen magnum with single-axial or single-sagittal PCMR. The goal of this study was to measure CSF velocities at multiple cervical spinal levels in patients with Chiari I malformation. MATERIALS AND METHODS In a patient registry, consecutive patients without surgery who had PCMR flow images in 5...