How to use the Parametric Foot and Create Mold Tools (SMO)

The Parametric Foot and Generate Mold tools allow you to design a patient-specific mold based on anatomical measurements rather than a scan. These tools are specifically intended for the creation of Supramalleolar Orthoses (SMOs).

Using a predefined algorithm, the Parametric Foot tool recreates the patient’s foot geometry based on mandatory and optional measurements. The Generate Mold tool then lets you fine-tune the mold using adjustable offsets and toebox parameters.

1. Before You Start

Patient Eligibility

Before using the Parametric Foot tool, ensure that the patient:

• Is between 1 and 10 years old

• Can be positioned in a neutral foot alignment

• Has foot measurements that fall within the supported minimum and maximum ranges

• Does not present fixed deformities or excessive bony prominences, as these cannot be represented by the algorithm

Measurement Conditions

For accurate results:

• The patient should be barefoot (no socks)

• Measurements should be taken in a non-weight-bearing position (e.g. sitting with the foot hanging)

• For metatarsal width measurement (J), apply pressure to splay the metatarsals, simulating full weight bearing

Required Tools

• Measuring tape for circumferential measurements

• Caliper for length and width measurements

2. start of the process

Step 1: Take the Foot Measurements

The Parametric Foot tool supports 18 total measurements, of which 11 are mandatory.
All values must be entered in millimeters (mm) and fall within the defined limits.

Mandatory Measurements

You must enter the following measurements to generate a parametric foot:

 

Optional measurements can be added to further refine the foot shape.

Step 2: Create the Parametric Foot

1. Open the Parametric Foot tool in Spentys

2. Enter the mandatory measurements (and optional ones if available)

3. Verify that:

   • All values are entered in mm

   • All measurements fall within the allowed ranges

4. Generate the parametric foot model

At this stage, the system uses the algorithm to recreate the patient’s foot geometry.

Step 3: Generate the Mold

Once the parametric foot is created, proceed to the Generate Mold tool to customize the fit.

You can adjust multiple offsets to improve comfort, clearance, and support.

Available Mold Adjustments

 

 

Toebox Customization

Additional adjustments can be made to the toebox:

• Extra length

• Extra height

• Extra width

• Lift angle (toe spring)

Image	Correction	Explanation	min limit (mm)	Max limit (mm)
	Extra Length in Toebox	Adds extra length in the toebox for patients who require more space for the toes	0	40
	Extra Height in Toebox	Adds extra height in the toebox to accommodate high arches or larger toe volumes	0	10
	Extra Width in Toebox	Adds extra width in the toebox for wider feet	0	10
	Lift Angle in Toebox	Adjusts the upward angle in the toebox, influencing toe lift	0	20º

These options help accommodate toe volume, high arches, or specific gait needs.

Step 4: Review and Finalize

Before finalizing:

• Double-check all parametric foot measurements

• Ensure mold offsets match the patient’s clinical needs

• Confirm values are realistic and within limits

Once validated, you can proceed with mold generation and continue your standard workflow.

Best Practices & Tips

• Always verify patient eligibility before using the Parametric Foot tool

• Accurate measurements are critical — small errors can significantly impact fit

• Use optional measurements when available to improve precision

• Start with conservative mold offsets and refine as needed

Video

Here is a video of the complete workflow.