Lumbar Spine 1
Lumbar Spine 2
Cervical Spine
Analysis Presentation
Technical Applications

Sample images and analysis of the lumbar spine (2):

Example_Lumbar_2_Flexion

Initial functional X-ray in Flexion

Landmarks_lumbal_2_L2_fixed

Sample usage of markers (landmarks, yellow) in the segment L1-2. The landmarks are not required for analysis, however, clearly show the path of relative motion.
Measured Range of Motion in L1-2=8.8°.

Landmarks_lumbal_2_L4_fixed

L3-4 Range of Motion = 0°
This segment shows no rotation, only very small translation.

Example of a well aligned segment L3-4 with neither a static nor dynamic listhesis.

Example_Lumbar_2_Extension

and Extension

CoR_lumbal_2_L2_fixed

L1-2 Center of Rotation (green dot in the middle).
The location of the Center of Rotation is outside the physiologic area, which indicates a degenerated status of the segment. This would be not as clearly visible when looking at the X-ray images alone.

CoR_lumbal_2_L4_fixed

L1-2 Center of Rotation (green dot, not visible as it is outside the image area).
The CoR is far away as literally no rotation takes place. This indicates a fusion between the segments L3-4.

Automatic classification according to the Meyerding classification. Shown is a spondylolisthesis grade 1 in the segment L4-5