What you are about to see, you cannot see with any other diagnostic imaging tool. The major cervical ligaments that are commonly damaged from a neck injury are as follows:

 

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This is a demonstration of a sub-failure or stretching of a
Posterior longitudinal ligament.
There is a anterolisthesis of C4 on C5.

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This is a demonstration of a sub-failure or stretching of an
 interspinous ligament.
There is an increased separation of the spinous processes at C4-C5 and C5-C6.

The Worst cases:  These worst cases were found to be negative on MRI, CT & X-ray because the injury was not caught during motion!  

This is a demonstration of a broken neck at the base of the skull

              Shoulder, elbow, wrist, hand injuries found by
              Digital motion X-ray that was missed by standard
              x-rays and MRIs

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As you can see, there is a lot of damage that is missed with traditional imaging.  The examples above primarily represented neck injuries.  On the right here you can see that the DMX is also an excellent choice for the hand, wrist, elbow, shoulder, knee, ankle and foot as well.

The following image links are under construction come back soon for these videos

This is a demonstration of a sub-failure or stretching of a
capsular ligament.
There is facet gapping of C6 – C7.

This Picture above is a demonstration of a sub-failure or stretching of an
anterior longitudinal ligament.
There is a retrolisthesis of C5 on C6.

This is a demonstration of a sub-failure or stretching of the
alar ligament.
This demonstrates with an overhang of the lateral mass of C1 bilaterally.

This is a demonstration of a sub-failure or stretching of a
transverse ligament.
There is an anterior translation of C1 on C2 creating an increase in the atlanto-dental interspace (ADI).

This is a demonstration of a sub-failure or stretching of the
accessory ligament.
There are changes at the para-odontoid space bilaterally.