Posture Editor Dialog Box

The Posture Editor dialog box appears when you select Posture Editor. This a tool used to move manikin segments in forward kinematics. The segments or degrees of freedom (DOF) are moved one step at a time. This tool allows you to give a precise value to each degree of freedom of every joint. The manikin's structure consists of 68 articulated joints with 6 coupled joints (range of motion can depend on the position of a neighbor joint).

This dialog box contains controls for:

Related Topics
Using the Posture Editor



Segments

Segments
This is a list of human body segments corresponding to the selection made in the part menu. Select the name of the segment in the list to select it. The Arm is selected.





Hand Filter

Hand Filter
When the Hand Only option is selected, only the hand is available in the Segments multi-list. When the Hand and Fingers option is selected, all of the fingers are also available in the Segments multi-list.

Side

Side
When you edit certain segments such as the arm, you can choose which side you want to work with: Left or Right. Left is the default option when the dialog box opens.



Degree of Freedom

Degree of Freedom

From the Degree of Freedom list, you can choose from three types of DOFs:


  • flexion/extension
  • abduction/adduction
  • medial rotation/lateral rotation

When the Posture Editor dialog box opens, the Degree of Freedom field in the dialog box is grayed out and has DOF0 as its field value. This changes to the default value flexion/extension only when one of the segments is selected.

A segment can have up to three DOFs. Examples of possible segment DOFs are: The forearm has two DOFs: flexion/extension and pronation/supination The arm has three DOFs: flexion/extension, abduction/adduction, medial rotation/lateral rotation

Each of the DOF types, flexion/extension, abduction/adduction, and medial rotation/lateral rotation, also have specific movement types. These are:

DOF Movement Type Axis

flexion

extension

dorsiflexion

hyperextension

transversal

abduction

adduction

eversion, ulnar deviation, elevation

inversion, radial deviation, depression

sagittal

medial rotation

lateral rotation

supination

pronation

longitudinal



Value

Value
Use the Value functionality to assign a precise posture to a segment. The value of the DOF is presented in angle and in percentage of the total range of motion (%).



Value percentage slider

The percentage (%) slider corresponds to the value in percentage of the total range of motion for the selected DOF. This value can be edited directly by sliding the cursor with the left mouse button.

Value spinner

This field allows you to enter a specific value in degrees using the keyboard. You can increment or decrement to segment rotation one unit at a time using the small arrows at the right end of this field. You can also change the step by using the spinner's contextual menu.



Motion

The motion field corresponds to the direction of movement, 0 degrees being the neutral point.



Coupling:

The range of motion (flexibility, functional limitation) for six pairs of segments on the manikin can be coupled, i.e., conditional to the position of another joint. These segments are: the claviculars, the arms, the forearms, the thighs, the legs, and the ankles.

Coupling modifies the range of motion of these segments only. It has no effect on any relationship that may exist between other body segments.

By default, coupling is inactive

Display

Display
The Display function has two options: Angular Limitations and Animate Viewpoint.

Angular Limitations (chart)



Angular Limitations (chart)

This check button displays or hides the graphical representation of the angular limitations for each degree of freedom.

Two arrows limit this range of motion, which is set by default at the 50th percentile of the population.


  • The green arrow shows the upper limit
  • The yellow arrow shows the lower limit
  • The blue arrow represents the segment's current position

Animate Viewpoint

This option zooms on the selected segment and changes the viewpoint in order to provide the best possible view for that degree of freedom. This improves the range of motion chart display and as well as the capability to better manipulate the blue arrow.



Predefined Postures

Predefined Postures
Use the Predefined Postures functionality to assign a predefined posture to the worker. From the Predefined Postures list, choose from the six available postures.

Stand Relax

Stand

Sit

Reach

Kneel

Stand Ready

Sit Relax