Cervical Metrics Flashcards
What are the normal ADI measurements?
Adults 1-3mm
Children 1-5mm
Increasing the altanto-dental interspace reduces what?
Neural Canal Size
What are some causes of ADI?
Trauma
Downs
Occipitalization
The alignment of the superior and inferior posterior body corners should normally be what?
Smooth vertical alignment
The posterior surface of the mid vertebral body to the nearest surface of the same segmental spinolaminar junction line is the landmarks for what?
Sagittal Canal
Narrowing of the canal may be present when the measurement is less than?
12mm
A wide canal would be the cause of what?
Spinal Cord Neoplasm or Syringomyelia
The 2 landmarks of the atlantoaxial axial should be in what alignment?
Vertical
The lateral cervical spine line should pass through what?
C7 body
The lateral cervical spine line allows gross assessment of where gravitational stresses are acting at what?
Cervicothoracic Junction
What is the normal measurement from posterior superior aspect of the odontoid to the posterior inferior corner of C7?
7-17mm
