Medial RF Posting
Medial RF Posting, sometimes referred to as a Medial Heel Wedge, represents an intrinsic addition of material at a specified angle within the area of application.
Area of Application:
A positive degree will commonly apply a supination moment to the subtalar joint within the area of application. This adjustment will result in an application of force that is medial to a normal subtalar joint axis.
In traditional orthosis terms this is similar to inverting an extrinsic rearfoot post, however this is applied internally.
A negative degree will commonly apply a pronation moment to the subtalar joint within the area of application. This is sometimes requested when a positive degree of Lateral RF Posting is deemed a contraindication due to orthosis fit, or other reasons.
Applying a negative value for Medial RF Posting will result in a lower medial heel cup height.
Lateral RF Posting
Lateral RF Posting, sometimes referred to as a Lateral Heel Wedge represents an intrinsic addition of material at a specified angle within the area of application.
Area of Application:
A positive degree will commonly apply a pronation moment to the subtalar joint within the area of application. This adjustment will result in an application of force that is lateral to a normal subtalar joint axis.
In traditional orthosis terms this is similar to everting an extrinsic rearfoot post, however this is applied internally.
A negative degree will commonly apply a supination moment to the subtalar joint within the area of application. This is sometimes requested when a positive degree of Medial RF Posting is deemed a contraindication due to orthosis fit, or other reasons.
Applying a negative value for Lateral RF Posting will result in a lower lateral heel cup height.
Users will often match negative and positive values to twist the rearfoot into a more everted or inverted position.