Chapter 7 Flashcards
What makes correction of the subluxation complete?
P-A thrust though the plane of the disc
Why will a T vertebra not misalign anterior?
Because of the zygapophyses
How often will a T vertebra show inferiority on film?
Rarely due to the ribs and their ligaments that bind to the thoracic spine
What movements predominate in T? In L?
T= Rotation and lateral flexion L= flexion/extension due to shape and orientation of facets
How do facets influence misalignment?
By influencing how much a vertebra slips in a particular direction
A segment is found to have no wedge– what does this indicate about scoliosis?
There may be none or there may be rotation to the convex side indicating spinous contact, or the rotation may be to the concave side indicating mammillary contact
When observing T rotation should you rely on spinous?
No because they are too variable
When depicting plane lines in T A-P what do you use? When and why?
Vertebral end plates and superior/inferior pedicle shadows
Use vertebra endplates when the body is malformed because it is more representative
What is the main effect of the thrust?
Reposition of the vertebra to it’s optimal relationship with the vertebra below
What happens when you emphasize repositioning of the spinous process?
The thrust will be too far laterally and with too much inferiority, thus not moving the vertebral body in the right direction to correct the posteriority or lateral wedging
In mid T what happens when you contact the inferior portion of spinous (imbrication)?
The thrust isn’t through the disc plane line
What is the best way to determine P-A thrust through the plane line of the disc?
By examining the lateral film in a horizontal view
How is lateral wedging corrected in T?
Torquing at the end of the thrust, which is a continuation of the P-A thrust not simultaneously with it
