first ray extension
First Ray Extension
The First Ray Extension option allows a user to request an extension that is adhered to the dorsal surface of the orthosis prior to top cover application. This extension begins at the midpoint of the 1st metatarsal and is extended to the distal edge of the orthosis.
Available Selections | Available Materials | Minimum Value | Maximum Value |
|---|---|---|---|
| EVA | Intrinsic EVA 400 EVA 350 EVA 260 EVA 220 EVA 190 EVA 125 | 0mm | 30mm |
| PPT | PPT (PORON) PPT (PORON Patina) PPT (PORON Slow Release) PPT (PORON XRD) | 0mm | 30mm |
Please note that you should contact your laboratory for specific information on the available materials.
EVA
Selecting this option allows a user to pick from the EVA material list.
PPT
Selecting this option allows a user to pick from the PPT material list.
reverse moreton's extension
The Reverse Morton’s Extension option allows a user to request an extension that is adhered to the dorsal surface of the orthosis prior to top cover application. This extension begins at the midpoint of the 1st metatarsal and is extended to the sulcus of the orthosis.
| Available Selections | Available Materials | Min Value | Max Value |
|---|---|---|---|
| Intrinsic | 0mm | 15mm | |
| EVA | EVA 120 3.0mm EVA 190 2.0mm EVA 190 3.0mm EVA 220 3.0mm EVA 350 3.0mm EVA 350 4.0mm | ||
| PPT | PPT (PORON) 1.6mm PPT (PORON) 3.2mm PPT (PORON) 6.4mm PPT (PORON) 10.0mm PPT (PORON Patina) 3.2mm PPT (PORON Slow Release) 3.2mm PPT (PORON Slow Release) 6.4mm PPT (PORON XRD) 3.2mm PPT (PORON XRD) 6.4mm | ||
A user is not able to specify thickness for a Reverse Morton’s Extension when selecting the EVA or PPT selection options. This is due to the difficult in manufacturing this adjustment at non-standard thicknesses.
Intrinsic
Selecting this option allows a user to request the Reverse Morton’s Extension be designed intrinsically. This results in an adjustment of a specified thickness that is the same density as the requested Density & Colour that is selected from the Shoe Fitting page.
EVA
Selecting this option allows a user to request the Reverse Morton’s Extension be manufactured from a specific density and thickness of EVA.
PPT
Selecting this option allows a user to request the Reverse Morton’s Extension be manufactured from a specific density and thickness of EVA.
This prescription option is often selected in combination with an Aperture to the 1st MPJ.
moreton's extension
The Morton’s Extension option allows a user to request an extension that is adhered to the plantar surface. This extension begins at the midpoint of the 1st metatarsal and is extended to the distal edge of the orthosis.
| Available Selections | Available Materials | Min Value | Max Value |
|---|---|---|---|
| EVA |
EVA 120 EVA 190 EVA 220 EVA 260 EVA 350 EVA 400 |
0mm |
30mm |
| Polypropylene |
Polypropylene 2.0mm Polypropylene 3.0mm Polypropylene 4.0mm |
||
EVA
Selecting this option allows a user to request the Morton’s Extension be manufactured from a specific density and thickness of EVA.
Polypropylene
Selecting this option allows a user to request the Morton’s Extension be manufactured from a specific thickness of polypropylene.
It is important to consider the patient’s weight and activity as this will contribute to the required thickness and resultant stiffness of the selected material.
A Morton’s Extension is commonly used to alter motion and plantar loading patterns in patient’s with hallux rigidus.
The image below represents a hypothetical example of the maximum achievable flexion at the forefoot of an orthosis with a Morton’s Extension applied.
