Gait TriPlane ADplot

The powerful property of the ADplot is its ability to accommodate the indexes of multiple gait graphs in a single Multi ADplot.

The implementation of this property is utilized to present the results of the gait report.

In four Multi ADplots, are summarized, all the graphs of the classical three plane Gait Kinematics report .

The four ADplots, present the gait deviation and asymmetry index values of the following human body levels:

• Pelvic Level
• Hip Level
• Knee Level
• Ankle/Foot Level

Each Multi ADplot contains the indexes of the three planes of motion thus named (TriPlane ADplot).

A more descriptive name is (PerBodyLevel TriPlane ADplot).

Three labeling digits are used to mark the points that belong to the respective Gait Graph Plane of Motion:

• S for Sagittal
• F for Frontal
• T for Transverse

For each Multi ADplot two extra points are plotted using the the asterisk symbol (*) . These points are showing the mean Asymmetry and Deviation observed in the three planes of the specific body level On the top left of the ADplot the values of the mean Deviation indexes are shown and on the bottom right the mean Asymmetry index.

click on image to zoom

Figure 1. Example gait analysis kinematics graphs together with the respective TriPlane ADplots of a Hemiplegic patient. One ADplot for each of the Pelvis, Hip, Knee and Ankle sets of graphs are shown. Each ADplot includes the sagittal, coronal and transverse planes right & left GGDIs & GGAIs values.

TriPlane ADplot implementation example

In the above example of TriPlane ADplot, it is obvious that Ankle/Foot level is the least involved (all points are consentrated closer to the green area). Right side involvement is obvious for the hip and knee (blue points deviate from the green and gray area than the respective red points). This is also documented from the Knee Level Mean R GGDI = 2.27 SDs while Mean L GGDI = 0.76 SDs and the Hip Level Mean R GGDI = 1.63 SDs while Mean L GGDI = 0.93 SDs.

Pelvic Level is asymmetric in the frontal and transverse planes. The dominance of asymmetry compared to deviation involvement in the pelvis is obvious since the points of the Frontal and Transverse planes are laying well below the diagonal. It should be noted that Frontal plane was found more asymmetric than the Transverse plane (Frontal GGAI = 4.93 SDs while Transverse = 4.13 SDs). Although it may be observed from the gait graphs that Transverse plane is more asymmetric. The smaller values of Normal SDs in the Frontal plane lead in the oposite result. These are results that without the indexes and ADplots might me interpreted differently.