Lines Xray Flashcards
Basilar angle
Platybasia, basilar impression
McGregors line
> 8 males, >10 females, basilar impression
Chamberlain
Basilar impression
Macrae
Basilar impression
ADI
> 3mm adults, 5mm children, transverse lig rupture or instability due to trauma, downs, inflam arthritis
George’s
Discontinuation means anterolisthesis or retrolisthesis
Posterior cervical line, aka spinolaminar junction line
Antero/retrolisthesis
Stress lines cervical
Flx intersects c5/6
Ext intersects c4/5
Prevertebral soft tissue
Soft tissue mass:
Retropharyngeal: >7
Retrolaryngeal: >14
Retrotracheal: >22
Cobbs
Best for scoliosis
Risser-ferguson
Scoliosis, not as good as Cobb
Sacral inclination
Normal 30-72°
Average 46°
Lumbosacral angle
Normal 26-57°
Average 41°
Myerdings
Determines degree of anterolysthesis in a spondy
Ullman
L5 beyond perp line means spondy