Knee Surgery Positioner – 15 mm Straight Round Bar
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3D-printed knee positioner for a straight 15 mm round bar. First model in a knee-surgery positioner series.
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Model information
- Source
- Printables
- Category
- Medical Tools
- License
- Creative Commons — Attribution — Share Alike
This is a knee positioner designed for knee surgery, mounting onto a straight bar with a circular cross-section of 15 mm diameter.
Overview
This is a knee positioner for knee surgery, designed to mount onto a straight bar with a circular cross-section of 15 mm diameter. It was developed at the 3D Printing Laboratory of the Simulation Center at Hospital de Clínicas – UFPR (Curitiba, Brazil), and is the first model in a series of positioners for knee surgery.
Printing options
The positioner can be printed in three ways:
Hollow shell filled with polyurethane foam (recommended). Printed in two parts, male and female, which are glued together and then filled with polyurethane foam. This option saves a lot of filament.
Solid, in two parts. The solid version is split into two portions that are simply glued together.
Solid, single piece. If your printer's build volume allows it, the solid version can also be printed as one piece. Note that it is quite large.
Assembly – polyurethane foam version
Print the male and female parts and glue them together (photos 1–4).
2- Fill the inside with polyurethane foam through the filling holes (photos 5–8).
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3- Once the foam has cured, the positioner is ready to use.
Print settings
PETG with a tick wall. Normally I use 7mm.
Disclaimer
This model is not a certified medical device. It is shared for educational, research and prototyping purposes. Any clinical use is the sole responsibility of the user and must follow local regulations and institutional protocols. Standard FDM thermoplastics such as PLA and PETG do not withstand autoclave sterilization. Use outside the sterile field, under sterile draping, or with a validated low-temperature sterilization method.