transitional vertebra
Short ribs at
the first lumbar vertebra. Thus it"s a transitional vertebra.
Atlanto-occipital
assimilation • Bilateral atlanto-occipital assimilation - Ganzer Fall bei Radiopaedia
Transitional
vertebra • Transitional lumbrosacral vertebra - lumbarized S1 - Ganzer Fall bei Radiopaedia
Transitional
vertebra • Lumbosacral transitional vertebra - sacralization of L5 - Ganzer Fall bei Radiopaedia
A transitional vertebra is one that has indeterminate characteristics and features of vertebrae from adjacent vertebral segments. They occur at the junction between spinal morphological segments:
- atlanto-occipital junction
- atlanto-occipital assimilation: complete or partial fusion of C1 and the occiput
- occipital vertebra: an additional bone between C1 and the occiput
- cervicothoracic junction
- cervical rib arising from C7
- thoracolumbar junction
- lumbar (13) rib arising from T13 or L1 (depending on numbering)
- lumbosacral junction
- lumbosacral transitional vertebra: most common
Their importance stems both because the altered anatomy can be symptomatic (e.g. cervical rib causing thoracic outlet syndrome) or because they can lead to confusion when describing findings and thus lead to an incorrect level operation.
Radiographic features
MRI
- best identified on sagittal T1W and T2W images
- correct identification can only be definitively proven if the entire spine is imaged
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Transitional vertebral body:
