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  • 1
    Electronic Resource
    Electronic Resource
    Radiology of posterior lumbar apophyseal ring fractures: Report of 13 cases (1988)
    Springer
    Neuroradiology 30 (1988), S. 337-344 
    Details
    ISSN: 1432-1920
    Keywords: Spine ; Apophyseal ring ; Intervertebral disc ; Herniation ; Trauma ; Scheuermann's disease ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report radiological findings in 13 cases of avulsion of the posterior lumbar apophyseal ring. The lesion affected young adults in 10 cases and adolescents in 3 cases. The lesion involved the inferior endplate of L4 in 11, and of L5 in 1 patient, and of L3 in 1 patient. 6 patients presented with unilateral sciatica, 3 with bilateral sciatica, and 4 with low back pain. Acute spinal trauma was evident only in 2 adolescents. Radiological recognition of the lesion was possible on plain films in 9 cases. CT demonstrates association of avulsion of the posterior vertebral apophyseal ring and herniated disc in all cases. Avulsion of the posterior apophyseal ring has to be differentiated from posterior longitudinal ligament, annulus, or herniated disc calcifications, as well as from posterior degenerative ridge osteophytes. Controversy about physiopathology of the lesion remains: weakness of the apophyseal ring during childhood and in patients with Scheuermann's disease may explain avulsion of the apophyseal ring in association with median disc herniation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00328185
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    MRI and MR angiography of persistent trigeminal artery (1996)
    Springer
    Neuroradiology 38 (1996), S. 730-733 
    Details
    ISSN: 1432-1920
    Keywords: Key words Artery ; trigeminal ; Arteries ; anomalies ; Magnetic resonance imaging ; Magnetic resonance angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe the MRA and MR angiography (MRA) features of persistent trigeminal artery (PTA) found incidentally in eight patients, with special attention to its origin, site and course. The different patterns of posterior communicating arteries were also noted. The PTA were shown on sagittal, coronal and axial MRI and on MRA. In four cases, the PTA arose from the lateral aspect of the intracavernous internal carotid artery, ran caudally, passing round the bottom of the dorsum sellae to join the basilar artery. In the other four cases, it arose from the medial aspect, ran caudally through the sella turcica and pierced the dorsum sellae to join the basilar artery. The posterior communicating arteries were present unilaterally in five cases and bilaterally in one, and absent bilaterally in two. Identification of a PTA with a trans-sellar course is crucial if a trans-sphenoidal surgery is planned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050337
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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