Developmental Stenosis of the Cervical Spinal Canal

Hinck, Vincent C.; Sachdev, Naunihal Singh

doi:10.1093/brain/89.1.27

Cited by 98 publications

(33 citation statements)

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“…17,18 CBR, which eliminates the magni®cation e ect or radiographs, is a good alternative to measurement of the sagittal spinal canal diameter. 19 In this study, CBR signi®cantly decreased with age, and this may suggest the bony cervical spinal canal would be narrower with aging even in asymptomatic subjects.…”

Section: Discussionmentioning

confidence: 99%

Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects

et al. 2003

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Study design: Prospective study on magnetic resonance imaging (MRI) and radiographic ®ndings of the cervical spine. Objective: To elucidate the age-related changes of the cervical spinal cord and the cervical spinal canal and the relationship between the spinal cord and the spinal canal in asymptomatic subjects using MRI and radiography. Setting: Tokyo, Japan. Methods: The transverse area of the cervical spinal cord and the ratio of the anteroposterior diameter to the transverse diameter (RAPT) were investigated, using MRI in 229 asymptomatic subjects. The sagittal spinal canal diameter and anteroposterior diameter of the cervical vertebral body were also measured on plain lateral radiographs. The canal body ratio (CBR), which was de®ned as the diameter of the spinal canal divided by that of the vertebral body, was calculated. Results: The transverse spinal cord area correlated negatively with age. RAPT did not correlate with age. The CBR correlated negatively with age. The correlation between spinal cord area and CBR was signi®cant but weak and the correlation between RAPT and CBR was not signi®cant. Conclusion: The transverse area of the cervical spinal cord measured by MRI decreased with age, while RAPT remained unchanged. The bony spinal canal became narrower with age. The spinal cord area and the shapes of the spinal cord were independent from the spinal canal diameter in asymptomatic subjects. These facts should be considered when evaluating radiological ®ndings in patients with cervical spinal disorders.

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Section: Discussionmentioning

confidence: 99%

Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects

et al. 2003

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“…Hinck et al [14,15,16] first described congenital cervical stenosis in the subaxial region; however, to date clinically significant cervical stenosis caused by a hypoplastic C1 arch has only been described in a handful of cases worldwide [1,3,4,8,17], and usually in adult patients. The average normal sagittal canal diameter at the level of the atlas ranges between 17 and 25 mm in adults.…”

Section: Discussionmentioning

confidence: 99%

“…In contrast, the average cord diameter ranges between 10 and 12 mm [14,18]. Clinically significant canal compromise should be suspected in patients with a canal narrower than 14 mm [19], and patients with a canal diameter of less than 10 mm are usually symptomatic [16,20]. The severity of symptoms appears to be very variable [1,3,4,8,17].…”

Section: Discussionmentioning

confidence: 99%

An Unusual Form of Occipitocervical Assimilation Presenting with Spastic Tetraparesis in a Child

Lee¹,

Wood²

2010

Pediatr Neurosurg

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A diagnosis of ‘cerebral palsy’ in childhood is relatively common. Abnormalities of the upper cervical spine causing spinal cord compression are rare, but can be a cause of symptoms and signs that may otherwise be attributed to brain injury acquired during development. We present an interesting case of a congenital abnormality of the atlas causing severe cervical spinal cord compression in a 9-year-old child, together with a discussion of the relevant aspects of spinal development and a review of the literature.

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“…7) This difference explains the lower incidence of symptomatic canal stenoses at the level of the atlas. Spinal cord compression should be considered a possibility if the sagittal canal diameter is less than 14 mm.…”

Section: Discussionmentioning

confidence: 99%

Cervical Myelopathy Caused by Hypoplasia of the Atlas and Ossification of the Transverse Ligament. Case Report.

Tsuruta

Yanaka

Okazaki

et al. 2003

Neurol. Med. Chir.(Tokyo)

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A 79-year-old Japanese female presented with symptomatic cervical myelopathy caused by a hypoplastic posterior arch of the atlas and ossification of the transverse ligament. Neuroradiological examination demonstrated a hypoplastic posterior arch of the atlas and ossification of the transverse ligament. The cervical spinal cord was compressed at the level of the atlas by both the hypoplastic posterior arch of the atlas and the ossification of the transverse ligament. The patient underwent C-1 laminectomy, which arrested the progressive myelopathy and resulted in a good recovery. Atlas hypoplasia with ossification of the transverse ligament may be associated with Asian ethnicity.

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Developmental Stenosis of the Cervical Spinal Canal

Cited by 98 publications

References 0 publications

Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects

Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects

An Unusual Form of Occipitocervical Assimilation Presenting with Spastic Tetraparesis in a Child

Cervical Myelopathy Caused by Hypoplasia of the Atlas and Ossification of the Transverse Ligament. Case Report.

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