How to create your AFO on the Spentys application, customizing it fully with our 3D Software.
Here is the step-by-step tutorial while using the "Forma workflow."
After selecting your model, you can now select the "Custom" workflow, which allows you to customize the scan correction, the design, and the printing of your AFO.
After selecting this option, you'll be asked if you want to add another order for a TPU inlay in your order, which can be a full boot or half of it to be thinner in the device.
If you have chosen a dynamic model ( B8 ), you can now select your articulation model and the degree of mobility of the device.
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During the "correct" step, select Forma correction to access the 3D software. You will then have to follow the app to complete the following: Clean up Pose Sculpt |
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To proceed with the "clean up" of the scan, the application will ask you to select the object in the 3D scene you want to use and then place two reference points that the software will use to reorient the scan. Place these points correctly because they will be crucial for the rest of the modifications. The first point is located in the center of the medial malleolus. |
The second is on the anterior aspect of the tibia, halfway up the bone.
After that, you will be able to move a virtual square on the scan that will delimit the cut of your scan.
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The next step is the rectification step. It will first ask you to place a series of points on the ankle joint so that the software understands or deforms the foot correctly. The points for this are the anterior talus, the center of the lateral malleolus, the Achilles tendon above the calcaneus, the front of the foot (2nd toe), and finally, the first metatarsal head. |
Once all these points are validated, the application will give you access to 4 sliders at the bottom of the screen. Once you click one of the buttons, the slider will activate and allow you to modify the foot in degree.
Tip: if you only want to correct the back foot, you can start with a global inversion/eversion and then correct the forefoot with the twist option to make it flat
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If you have already experimented with the FreeForma tool, the sculpting tool works similarly: it will draw your loads/unloads directly on your model. The application offers you tools to gain precision. Here is a presentation of the tools at the bottom of the screen from left to right: |
- The arrows allow you to go back/forward in your strokes.
- The push/pull switch will allow you to switch between charge and discharge modes.
- The brush tool to applies depth changes to the scan while the eraser tool removes those changes on that area.
- The slider "limit value" will help you precisely define the height of your deformations.
- Finally, "brush radius" will allow you to define the diameter of your brush during your drawings.
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You will then be asked to fill out the printing and color selection information for your AFO. Notice that colors are only available by ordering the AFO through Spentys since we will only provide the STL file when you select "Local" |
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Once you get to the design stage, you can select the design mode you want. Then fill in the AFO length and width fields, and select the heel hole option to create a hole in the AFO that will allow you to check the position of the heel inside.
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After selecting it, you will open the Forma Software again:
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To draw the contours of your brace, press one of the suggested lines. The line will then show a series of dots. All these dots, by pressing and moving them, can help you to draw yourself the cutting lines of your orthosis personalized to your patient. |
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For more precision in your design, you can also, after selecting a line, increase or decrease the number of editable points on that line. To do this, press the + and - icons at the bottom of the screen. |
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Next step: thicknesses: During this step, you will be able to customize the thicknesses along the length of your AFO and also include a Global Offset, allowing you to include a foam of the same thickness, for example. We recommend a fairly rigid thickness at the back and heel of your AFO of 3 to 4mm and a thinner thickness at the front of the sole of 1 to 2mm, depending on the patient's weight. Then you will be asked to choose your closing system among the emplacement of the drawings. |
Congratulations! You managed to create your first customized AFO!