Establishing and Determining Trimlines on Devices with Dark Transfers

Step 1: Determine trim lines

  • It’s a good idea to draw out your trimlines on the cast before draping.

Picture1.png
  • You can use an indelible pencil or a black sharpie, whichever is preferred.  

Picture1.jpg

Step 2: Mark the location of the holes

  • Make sure to mark your holes outside of your trimlines.

Picture1.png
  • Try to keep each hole a consistent length away from your timelines.

Picture1.jpg

Step 3: Drill holes into cast

  • Drill holes into your cast around the outside of your trimline.

  • Drill bit size can depend on the size of your cast and the thickness of your plastic

  • The thicker the plastic, the larger drill bit you can use.

  • 1/4 inch drill bit was used in the pictures below.

Picture1.png
Picture1.jpg

Step 4: Drape your plastic

  • Continue the moulding process as usual.

Step 5: Cutting out the device

  • Once the plastic has cooled and you’re ready to cut out your device, use the divots to create the cutting borders.

Picture1.png
  • Simply cut along the the dotted line.

Picture1.png

Step 6: Buff and finish your device!

Using this tech tip takes out the guess work in where to make your initial cut after moulding.

Picture1.jpg
Picture1.png

Tech tip by Marina, 2018, and Patricia Dang, 2014

Thanks to Active Orthopedic Solutions and Chedoke Hamilton Health Sciences for this technique.