Basic Transfemoral (TF) by measurements - Manual

Learn how to create a Transfemoral socket by measurements.

Written by Össur Design Studio Team
Updated over a week ago

Basic Measurements for TF socket designed by measurement.

Use the Össur Leg Measurement form to record measurements:

Transfemoral measurement form

Length: Identify Ischium and instruct to confirm when length gauge applies pressure to ischium

Ischium, Transfemoral length measurement

While patient is in full extension, compress tissue at ischium and apply compression to soft tissue proximally, with contact distally.

Transfemoral Length Measurement

**If length of the socket is consistently too long, submit shorter measurement by compressing distal end OR measure from Perineum for length

Circumferences: Transfer Length gauge mark to the lateral aspect of the limb. This is considered Zero on all measurement forms. We can also refer to this as Ischial level.

Then mark the limb every 2 inches or 50 mm from ischial level

Transfemoral Circumference Measurements

Record circumference measurements. We recommend recording the average between Tight and Loose. Accurate measurements will appropriately resize the templates within Össur Design Studio.

Height measurements

On the sound side, measure knee center to floor & Ischium to floor.

Knee center to floor measurement

IT to floor height measurement

Now we can take these measurements to Össur Design Studio

Create new patient file

Enter patient Name and click Create Patient:

AK Template Options. Select the template for your patient and click Use

**If you would like to upload a template for your company, please email [email protected] and our customer service can help you get that set up. You may also click the yellow chat in the bottom right corner to ask for assistance setting this up.

Mesh Tools- Flip Left/Right

Correct the length

Refer to hand measurements, Use the Reduce P2P (Point-to-Point) tool to scale the model to length measurement

Reduce P2P: This tool scales the model to a desired measurement.

Select Reduce P2P

Enter Desired Measurement, then click outside the cell or use keyboard ‘Enter’ or ‘Tab’ buttons. Design Studio will calculate the proper scaling.

Select proper direction to scale the selected measurement:

Axial length: Proximal/Distal

Medial/Lateral: Left/Right

Anterior/Posterior: Front/Back

Click Scale by Axis to complete the change

Apply circumference measurements:

Click Measurements from the tool’s menu

Select Circumference

How to apply circumference measurements to a TF model

Apply Circumference Measurements:

Circumferences are taken perpendicular to the Proximal – Distal axis. Templates are designed to dip below the anatomy anterior to the ischial level to allow the ramus to exit the socket. Therefore, the circumference measurement at Ischial level isn’t applicable to the template. We recommend deleting the circumference measurement at the Ischial level.

Refer to measurement chart. Apply the average of Tight and Loose measurements using the Reduce tool

Select the Reduce tool. When the tool is visible, insert the desired hand measurements. Again, we recommend using the average between tight and loose measurements as the desired circumference.



Average- Creates an average between high and low areas inside the tool area

Remove area- shaves high areas (peaks) inside the tool

Add only- fills in low areas (valleys) inside the tool

Choose the size of tool for blending

Choose the strength

If area shouldn’t be blended into another, select that region and toggle Protect Selected Region ON

Blend all – used for global smoothing over the model

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