"Platybasia"

Impact of Platybasia and Anatomic Variance on Surgical Approaches to the Craniovertebral Junction. The aim of this study was to characterize the anatomic relation of the craniovertebral junction (CVJ) relative to the palatal line (PL), determine if the height of the CVJ over the PL is directly related to the anterior skull base (ASB) angle and the condition of platybasia, and consider the impact of the findings on endoscopic surgical approaches to the skull base. Retrospective radiographic review. A retrospective study was performed using patients with chronic rhinosinusitis (CRS) as the control population and patients with platybasia as the study population. Sagittal magnetic resonance imaging and computed tomography were used to measure the ASB angle and the height of the CVJ above or below the PL

in sleep disturbances after decompressive surgeries for Chiari Malformations. There is no report of postoperative deterioration due to sleep apnoea in these patients. Authors report two cases of basilar invagination associated with ACM and Platybasia, who deteriorated probably due to worsening of pre-existing sleep disorders on 3rd and 7th postoperative days after their surgeries, despite clinico

analysis (ARA) was used to assess variable clustering. Among 51 patients, the main causes of compression were either purely bony (retroflexed dens [n = 18]; basilar invagination [BI; n = 13]) or soft tissue (degenerative pannus [n = 16]; inflammatory pannus [n = 2]). The primary cluster in ARA was a retroflexed dens, platybasia, and Chiari malformation (CM), and the secondary cluster was BI, C1-2 or posterior cervical wound revision both occurred in 3.9% of patients. In classifying, one cluster caused decreased posterior fossa volume due to an anatomical triad of retroflexed dens, platybasia, and CM. The second cluster caused pannus formation due to degenerative hypertrophy. For both, endonasal decompression with posterior fixation was ideal. The third group contained C1 anterolisthesis characterized

angles than platybasic patients and controls because of more acute N-S-Ptm angle. Among the nonplatybasic patients, Ve-T length tended to be shorter (with no significant difference between groups) and located more inferiorly (because of the smallest ANS-Ptm-Ve angle) in relation to the maxilla. Thus, the nasopharynx was narrower horizontally but longer vertically than in patients with platybasia

(BI), Platybasia (PTB) Retroflexed Odontoid (RO) and Brainstem Kinking (BSK). We describe the symptomatology, the clinical course and the neurological signs of the new nosological entities as well as the changes visible on imaging studies in a series of 373 patients. Our series included 72% women with a mean age of 33.66 years; 48% of the patients had an interval from onset to diagnosis longer than

and lateral skull radiographs. Platybasia and a 'J' shaped sella turcica were observed. The craniofacial abnormalities emphasize the importance of a raised level of awareness in terms of dental management and the challenges.

. Syringomyelia was absent or markedly reduced in 56 patients (77.8%). Symptoms were alleviated in 66 patients, remained unchanged in 12 patients and progressed in 3 patients. Statistical analysis indicated that the cerebellar tonsillar descent (CTD) grade, basilar invagination and platybasia influenced the clinical outcome (P<0.05). In conclusion, early recognition and surgical treatment of CM-I in pediatric patients can lead to good outcomes. The current results suggested that small-bone-window posterior fossa decompression with autologous-fascia duraplasty was an effective safe treatment option with a low complication rate. High CTD grade, basilar invagination and platybasia were indicated to be predictors of poor clinical prognosis.

as an autosomal dominant disease although sporadic cases exist. HCS is characterized by craniofacial developmental defects, including platybasia and wormian bones, osteoporosis with fractures, and acro-osteolysis. Subjects may suffer severe neurological complications, and HCS presents with cardiovascular defects and polycystic kidneys. An experimental mouse model harboring a HCSNotch2 mutation exhibits

, tonsillar herniation length and concurrent anomalies were evaluated. Supratentorial, infratentorial, and total intracranial volumes were measured using Cavalieri method. Various cranial distances and angles were used to evaluate the platybasia and posterior cranial fossa (PCF) development. Tonsillar herniation length was measured 9.09±3.39 mm below foramen magnum in CM group. Tonsillar herniation

A Prospective Study of Surgical Treatment Strategies for Goal B Type Basilar Invagination The etiology of Goal B type basilar invagination (BI) is still not clear, and it may be related to platybasia and short slope. There is no unified standard surgical strategy for Goal B type BI, and different surgical strategies have a great influence on the surgical results of patients. The purpose of our

. Causes 1. Acute Sinusitis 2. Otitis Media 3. Otitis Externa 4. Ophthalmologic abnormality (e.g. Glaucoma) 5. Temporomandibular Joint Dysfunction (TMJ) 6. Occipital defect 1. Platybasia 2. Chiari Malformation 3. Klippel-Feil Syndrome III. Evaluation 1. See Headache History 2. See Headache Examination 3. See Headache Diagnostic Testing 4. See Neuroimaging in HeadacheImages

tract involvement 1. Muscle spasticity 4. Spinal sympathetic fiber involvement 1. Trophic changes VIII. Associated conditions: Spinal cord disorders 1. Scoliosis 2. Vertebral fusions 3. Platybasia IX. Diagnosis 1. Contrast-Enhanced MRI Spine 1. Syrinx will appear as fluid-filled, gliosis lined cavity 2. Defines extent of Syrinx (between C2 and T1) 3. Identifies associated

a posterior occipitocervical arthrodesis. Two patients presented with irreducible atlantoaxial subluxation in Down syndrome, whereas the others presented with an atlanto-occipital malformation with platybasia and basilar invagination. No complications were observed. In all except one case, orotracheal intubation was removed immediately at the end of surgery. Oral feeding was resumed 1 day after surgery

; confirmation with other imaging modalities is not needed.The presence of a large, thin cranium with platybasia and cranial settling may lead to the appearance of the Tam O'Shanter skull.Frontal radiograph of the leg in a patient with type I osteogenesis imperfecta (OI) shows evidence of severe osteoporosis, overtubulation of both the tibia and fibula, and a healing fracture of the transverse diaphyseal

findings include Klippel-Feil anomaly, basilar impression, scoliosis, craniovertebral fusion, and hydrocephalus.Next: RadiographyFor patients in whom syringomyelia is suggested by clinical criteria, the diagnosis should be confirmed by radiographic investigation.Associated congenital anomalies include the following: * * Basilar impression and platybasia * * Klippel-Feil deformity

posterior fossa * * Platybasia and basilar invagination * * Assimilation of the atlas Soft-tissue masses of abnormal nature include the following: * * Tumors (eg, meningioma at foramen magnum) * * Inflammatory masses Neural tissue abnormalities include the following: * * Cerebellar tonsils and vermis herniation * * Chiari malformation Membranous

. If bone pain occurs with weightbearing or if gait abnormalities are present, individualized adjustment in physical activity regimens may be made.Previous Next: TransferPatients with Paget disease usually are medically stable. Complications (eg, neurologic compromise from spinal cord compression or hydrocephalus; brainstem compression from platybasia, basilar invagination, vertebral fracture, spinal