Bdi Interval. BDI Interval Console Ambiente Modern Furniture The basion-dental interval (BDI) and basion-posterior axial line interval (BAI) are the most reproducible and reliable measurements of the upper cervical spine, although other measurements, such as Power's ratio, Lee's lines, McCrae's line, and the Chamberlain line, are well described in the literature (Bono et al Gross craniocervical malalignment (BAI or BDI >2 mm beyond normal limits) Unstable
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Widening of the basion-dens interval is an important sign of cranioverterbral junction injury Basion-dens interval (BDI) and Translational BDI (tBDI) - Radiology Measurements of the Craniocervical Junction
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Gross craniocervical malalignment (BAI or BDI >2 mm beyond normal limits) Unstable basion-dens interval or basion-posterior axial interval >12 mm suggests occipitocervical dissociation Harris et al 2 calculated that >95% of adults in their study population had a BDI and BAI less than 12 mm and considered this value as the upper limit of normal.
The Design Behind the BDI Interval Media Collection's Unique Door. The BDI, or basion-dental interval, measures the distance between the most anterior and inferior portion of the skull (ie: "basion") and the tip of the dens, which is a superior extension of the second cervical vertebrae basion-dens interval or basion-posterior axial interval >12 mm suggests occipitocervical dissociation
Con dence intervals BDI scores across groups. Download Scientific. The BDI is abnormal in the presence of a displacement between the basion and the dens of more than 10 mm in adults or more than 12 mm in pediatric patients; A low BDI is not discussed in literature but this indicates the degree of upward odontoid migration or Platybasia In the image below the BDI is 14mm and is indicative of atlanto-occipital.