Variables used in OreTek^TM Client and Client/Server.

Table of Contents

Variable Name:
The name of the variable used to perform a function. Within the design code database, pressing F1 or control-K will bring the operator to this page and if documented, the variable itself.

Type:
This field defines the type of variable, Types can be:

• String
• Integer
• Numeric
• Logical

Purpose:

Detailed Description:

See Also:

Defines the name of the Nth accomodation to apply to a device. More commonly used names are aliased to single digit numbers.
Note: For any accomodation design, the name must be above all other accomodation variables.
When a0name is used, all variable assignments following the name are considered applied to the current accomodation assigned by a0name, effectively allowing one to apply an accomodation, and modifying the current accomodation. Subsequent assignments using a0name then push a new accomodation onto the accomodation stack, thus allowing for a single subset of accomodation modifiers for all accomodations. Although a1name through a9name could be used, this is not recommended.

This variable determines which feet to apply the Nth accommodation to.
0 - Bilateral
1 - Left Only
2 - Right Only

If (-1 <= value >= 1) the accommodation size is adjusted as a percentage of the width of the device.
If ( -1 > value < 1 ) the accommodation is adjusted by an absolute value in mm.

If (-1 <= value >= 1) the accommodation size is adjusted as a percentage of the length of the device.
If ( -1 > value < 1 ) the accommodation is adjusted by an absolute value in mm.

Used to adjust the position of the Nth accommodation.
if ( -1 > value < 1) then the value represents a percentage of the width of the device.
if ( -1 < value > 1) then the value represents an absolute adjustment in mm.
A positive value moves the accommodation towards the medial side of the device, whereas a negative value moves it towards the lateral side.

Used to adjust the distal position of the Nth accommodation.
if ( -1 > value < 1) then the value represents a percentage of the length of the device.
if ( -1 < value > 1) then the value represents an absolute adjustment in mm.
A positive value moves the accommodation towards the distal side of the device, whereas a negative value moves it towards the proximal side.

Defines the amount of arch fill. Values greater than 1 will attempt to increase arch height, whereas values less than 1 will reduce it. This feature is disabled when traditional arch fill, abflange is non-zero.

Defines the level of arch fill with no other arch modifications. Values less than 1 will reduce the overall arch height, whereas numbers greater than 1 will increase it. Assigning this value to 0 will enable conventional arch fill.

Normally, the arch contour is calculated properly, and an archfill region is created. This variable is used to prevent the arch fill from inappropriately filling in the heel area. Thus, the number for archfill should always be greater than 1

This variable attempts to guide the arch height to the desired altitude. As this altitude is defined by the cutting plane formed by abpercent and abdepth, it is only an approximation and more of a trial and error setting than absolute. This feature is disabled when traditional arch fill, abflange is non-zero.

When the value is between -0.5 and 0.5, the arch peak is moved longitudinally as a percentage of the unmodified peak position. When the value is outside the above range, the adjustment is made in mm. This feature is disabled when traditional arch fill, abflange is non-zero.

Used in conjunction with lct to reduce the bulk of devices, such as dress devices.

Often described as "motion", allows for pronation in an extrinsic heel post

Defines the distal edge angle of the left foot. This is commonly used in blake inverted devices.

Example:
code: blake
Variables:
deal=rfl*(-1)
dear=rfr*(-1)

At a given percentage of orthotic length, the power applied to the Distal edge angle is at its minimum. At 100% of orthotic length the power applied to the device is at maximum.

This variable determines the power of the equations used to redefine the distal edge angle.

Defines the distal edge angle of the right foot

A radius is defined as a percentage of the length of the device, usually behind the distal edge. This radius is then used to define the shape of the distal edge. In cases where the device is abnormally long on one side or the other, this radius generally needs to be increased to avoid the radius turning in on itself. (Intoe and outtoe designs)

Starting at the beginning of tapering, the thickness is decreased as a power function until it reaches the final thickness at the edge.

Enables reshaping of the perimeter of the orthosis from E to P to eliminate or minimize the dropoff that sometimes occurs with high heels and arches.

In normal cases, setting this value above 4 will assign the blending region from E to P. A future update will locate the highest point along the perimeter in this region, but otherwise, it is a significant improvement where needed.

Defines starting point of blending as a percentage of rearfoot width. Note: If this ETOPX is 0 and ETOP is true, this feature is disabled with warnings.

Defines the power of blending of the medial perimeter from E to P from the original surface defined by ETOPX as it blends into the perimeter of the affected region. Higher powers blend slower and sharper to the desired altitude along the perimeter.

This variable is normally entered into a prescription form.

This variable is normally entered into a prescription form.

Normally, the center of the first metatarsal is used to define forefoot width, or some factor thereof. When set to true, forefoot width is defined by the medial edge of the first metatarsal.

Used to define how far from the distal end of the device to terminate the midfoot grind or flange out on the lateral side.

Used to define how far from the heel post the midfoot grind or flange out will start on the lateral side

This variable is used to define the types of midfoot perimeter modifications are desired. The values are defined as follows:

• 0 - No midfoot grind or flange
• 1 - Medial Midfoot grind
• 2 - Lateral Midfoot grind
• 3 - Medial & Lateral Midfoot grind
• 4 - Medial Flange out
• 5 - Medial Flange out & Lateral Midfoot grind
• 6 - Not implemented
• 7 - Not implemented

• 0 or 3 - Both feet
• 1 - Left foot only
• 2 - Right foot only

Used to define how far from the heel post the midfoot grind or flange out will start.

Used to define how far from the distal end of the device to terminate the midfoot grind or flange out.

This variable increases heel cup height as a [b]h[/b]eel [b]c[/b]up [b]a[/b]dditive.

Example:
hdr=0.2
In the above example, a heel that is 60mm wide will have a heel cup height of 12mm+hca in altitude. Assigning heelhtabs overrides hdr and hca, as does entering an absolute value of heel height in a prescription form.

This variable enables you to modify the heel rim to its predefined height and cleans up the transition areas both medial and lateral. It is designed to correct for a multitude of problems when the surface equation cannot meet the expectations in terms of heel height/arch height

Example for default design standards
hdfix=true
hdfixl=1.3
hdfixd=1/hdfixl
hdfixw=0.8
hdfixp=5
hdfixdp=1


Example codes for V and W heel fixes

Code: vwfix1
hdfixw=0.7

Code: vwfix2
hdfixw=0.6

Code: vwfix3
hdfixw=0.5

Code: vwfix4
hdfixw=0.6 hdfixp=0.5

This variable defines the length of the heel depth fixing and blending function, as a percentage of the original heel rim length. Generally, hdfixd is set to 1/hdfixl, but this is not required, and could be used to extend a heel rim distal or proximal.

Assigns heel cup height. This code overides hca and hdr. Usually, this is entered in the prescription form directly.

A rocker heel encourages a neutral heel strike. Often, it is padded with a softer material to help encourage a neutral heel strike.

0 - Original method
1 - Prototype method
2 - No shaving

Defines the angle relative to the first, fifth and heel with which to file into the virtual positive device.

Used in conjunction with kirbya to determine the amount of heel skive filing on the "virtual" positive device. Effectively, it places a wedge on the medial side of the heel as defined by (link to document at a later date) .

When this variable is assigned to some value greater than 0 and less than 1, two other methods of defining a kirby skive becomes available. There are 3 methods of making a kirby skive. The first method finds a cutting point tangent to the curvature of the orthotic, and effectively fills in the orthotic at the specified depth. When depth is ommited, the lateral starting point becomes the start of fill, and the angle defines the fill. This second method is more reliable and the recommended implementation and simpler for podiatrists to understand. Using the typical value, the starting point of the kirby skive will be just medial of the center of the orthotic.

Method 3: If depth only is specified, depth is used to define angle, and KirbyX is used to trisect the heel area. recommended setting for KirbyX is 0.333

When lateral column shaving is enabled, this variable defines the thickness on the lateral side of the device. Typically used to reduce bulk on dress and sport devices.

This variable is normally entered into the default or custom prescription form.

This variable is normally entered into the default or custom prescription form.

Powers less than 1 define a convex shape for the flange, whereas powers greater than 1 define a concave shape.

Unassigned, LPT is assigned to the value of PT (Plastic thickness). Assigned, the target thickness is set to the lateral side of the device. Unlike lateral shaving using bslf and lct, this variable can be used to increase or decrease thickness on the lateral side of the orthosis. Care should be taken to assure that there is no interference with lateral tapering

Determines the width of flattening of the lateral column as a percentage of primary width.

Determines the distal edge of flattening of the lateral column

Determines the power of diminishing from medially into the original surface.

Determines the beginning of distal diminishing of lateral column flattening.

This variable determines the power of diminishing from the distal edge of flattening to the distal edge of the device.

Defines the beginning of tapering, aka feathering for the lateral side of the device. At this point, relative to the length of the device, tapering is at 0% and progresses to ltfymax to 100% feathering. If this variable is set to 0, tapering begins just anterior of the heel.

Starting at the beginning of tapering, the thickness is decreased as a power function until it reaches the final thickness at the edge.

Defines the position of maximum tapering (aka feathering) for the lateral side of the device.

• 0 - Polypro (translucent)
• 1 - Particle board positive
• 2 - Soft Accomodative
• 3 - Polypro (White)

Starting at the beginning of tapering, the thickness is decreased as a power function until it reaches the final thickness at the edge.

Powers less than 1 define a convex shape for the flange, whereas powers greater than 1 define a concave shape.

Defines the point at which medial tapering starts. At this point, relative to the length of the device, tapering is at 0% and progresses to mtfymax to 100% feathering. If this variable is set to 0, tapering begins anterior of the heel.

Enables all variables related to lateral column flattening.

As it's common for a first metatarsal cutout to cause weakness in the forefoot post, this variable causes the forefoot post to sink behind the cutout, restoring the strength of the device. It is typically used only for first met cutouts, but may also be used in extremely heavy patients to provide added strength

Normally, this value is entered within the prescription as defined by a given laboratory's definition based on patient weight and classification. A future version of OreTek will learn the appropriate value based on how the data is entered as a function of patient weight and classification. Classification is a function defined by the laboratory, and is simply a label that associates pt to a given patient's weight.

Typically, when accommodations are applied to a device, the material is weakened. This variable allows a definition of a plastic thickness additive to adjust to specific designs transparent to the operator.

Defines the percentage of the extrinsic rearfoot post to be shaved for pronation, AKA "motion".

By default, when grinding in "motion", also known as grindoff, a line is drawn from the lateral column peak through the width defined by rfpp to the proximal edge of the heel. Higher values guide this slope more parallel to the lateral column. Values less than 1 are interpretted as default and have no effect.

In order to reduce the bulk of a device, often the rearfoot thickness of the device is reduced, as there is no special benefit to maintaining thicknesses in this area. Often this thickness is set to a negative or near 0 value, especially in designs employing a cobra style of accomodation.

When set to 2, treats each foot as a unique order with the same prescription file and no averaging. Useful in cases such as polio victims where one foot's size greatly differs from the other.

A value of 0 means all top surface tapering
A value of 1 means all bottom surface tapering
Values between 0 and 1 determing how much tapering occurs on the bottom and top surfaces.

Note: This variable has no effect on distal edge tapering due to the nature of some bar and extrinsic forefoot postings.

Typically, on notop style of devices, this stepover is set as low as 1 to 1.2, whereas positives are typically 2.2 or higher. This variable defines the stepover from pass to pass of machining. Typical covered devices are from 1.5 to 1.9mm

Wrk variables are temporary storage variables, intended to be an aid in obtaining a more complex result than a single equation can give.
In the example below, a material thickness is calculated with a boundary of 2 to 6mm. 2 weights are listed, 100 lbs and 200, and their 2 thicknesses, 2mm and 4mm, respectively. In the resulting equation, y=mx+b (point slope), plastic thickness is determined.
pt=pt > 2
;wrk0 calculates slope
;wrk1 calculates Y intercept
;y = thickness x = weight
wrk0=((4-2)/(200-100))
wrk1=2-(wrk0*100)
pt=pt>(wrk0*weight+wrk1)
pt=pt < 6