How to make a model of a knee

Written by kelly sundstrom | 13/05/2017
How to make a model of a knee
You can make a knee joint model out of craft materials. (knee xray image by JASON WINTER from

The human knee contains a hinge joint, which allows it to move easily back and forth. When teaching elementary schoolchildren about the joints in the body, such as the hinge joint in the knee, you can provide your students with a hands-on activity that can show them how a hinge joint actually moves. One way to do this is to create a paper mache model of a knee joint.

Place two pieces of wood measuring 2 by 4 by 8 onto a flat surface, end to end. Arrange the pieces of wood so that the 4-inch sides lie flat.

Tape the pieces together on the sides of the wood that are facing upward. Use three to four pieces so that the pieces of wood stay together.

Turn the wood upside down so that the underside is exposed.

Spread the pieces of wood apart so that the middle is visible.

Tape the middle in between the pieces of wood to reinforce it.

Hold one of the pieces of wood, allowing the other piece to hang down freely in a 90 degree angle. When you move the hanging piece of wood up and down, it will replicate how a knee joint moves.

Things you need

  • 2 pieces of wood, 2 inches high by 4 inches wide by 8 inches long
  • Duct tape

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