Neufi03p at 01:15, 23 September 2016

2016-09-23T01:15:45Z

← Older revision		Revision as of 01:15, 23 September 2016
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	Click to enlarge images of students building knees in a first year health science class.		Click to enlarge images of students building knees in a first year health science class.

	<gallery mode="nolines" widths=~~200px~~ heights=~~200px~~>		<gallery mode="nolines" widths=400px heights=400px>
	Knee01.~~jpg~~\|		Knee01.JPG\|
	Knee02.~~jpg~~\|		Knee02.JPG\|
	Knee03.~~jpg~~\|		Knee03.JPG\|
	</gallery>		</gallery>

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	* 8 screws		* 8 screws
	* 1 screwdriver		* 1 screwdriver

	<gallery mode="nolines" widths=200px heights=200px>		<gallery mode="nolines" widths=200px heights=200px>
	Knee04.jpg\|		Knee04.jpg\|
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	Step 2 - Fit the cruciate ligaments		Step 2 - Fit the cruciate ligaments

	<gallery mode="nolines" widths=200px heights=200px>		<gallery mode="nolines" widths=200px heights=200px>
	Knee05.jpg\|		Knee05.jpg\|
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	Step 3 - Screw the ligaments down		Step 3 - Screw the ligaments down

	<gallery mode="nolines" widths=200px heights=200px>		<gallery mode="nolines" widths=200px heights=200px>
	Knee06.jpg\|		Knee06.jpg\|
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	Step 5 - Add the collateral ligaments		Step 5 - Add the collateral ligaments

	<gallery mode="nolines" widths=200px heights=200px>		<gallery mode="nolines" widths=200px heights=200px>
	Knee07.jpg\|		Knee07.jpg\|
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	== Production Information ==		== Production Information ==

	* Vinyl tubing - 9mm outer diameter, approx. 200mm long pieces (x4 per set)		* Vinyl tubing - 9mm outer diameter, approx. 200mm long pieces (x4 per set)
	* Screws - 25mm long (x8 per set)		* Screws - 25mm long (x8 per set)
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	Using a 10mm drill bit (i.e. wider than the tubing) drill the holes to accommodate the cruciate ligament tubing - just on either side of the middle of the articular faces and at an angle of 45 degrees. A drill press is essential for safety and to keep all parts uniform and interchangeable during class use. Rotate the lower part of the drill press to 45 degrees and make up a jig to hold the work. Make sure that all work is securely held with clamps and ensure that the drill does not penetrate further than is safe.		Using a 10mm drill bit (i.e. wider than the tubing) drill the holes to accommodate the cruciate ligament tubing - just on either side of the middle of the articular faces and at an angle of 45 degrees. A drill press is essential for safety and to keep all parts uniform and interchangeable during class use. Rotate the lower part of the drill press to 45 degrees and make up a jig to hold the work. Make sure that all work is securely held with clamps and ensure that the drill does not penetrate further than is safe.

	Click on the image to enlarge.		Click on the image to enlarge.
	<gallery mode="nolines" widths=200px heights=200px>		<gallery mode="nolines" widths=200px heights=200px>
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	Once the wooden pieces are satisfactorily shaped and drilled, they should be sanded well and varnished.		Once the wooden pieces are satisfactorily shaped and drilled, they should be sanded well and varnished.

Neufi03p: Created page with "A wooden model used to explore the structures of synovial joints, with the knee as an example. Two pieces of wood represent the femur and tibia, with the tubing standing in fo..."

2016-09-23T01:14:16Z

Created page with "A wooden model used to explore the structures of synovial joints, with the knee as an example. Two pieces of wood represent the femur and tibia, with the tubing standing in fo..."

New page

A wooden model used to explore the structures of synovial joints, with the knee as an example. Two pieces of wood represent the femur and tibia, with the tubing standing in for cruciate and collateral ligaments and the stretch wrap representing the joint capsule.

Click to enlarge images of students building knees in a first year health science class.

<gallery mode="nolines" widths=200px heights=200px>
Knee01.jpg|
Knee02.jpg|
Knee03.jpg|
</gallery>

==Student Class Exercise ==
Click on any image to enlarge.

Step 1 - make sure students have all the materials:
* 1 piece of timber with squared off ends
* 1 piece of timber with one rounded end
* 1 roll of stretch wrap
* 4 pieces of tubing (with pre-punched guide holes)
* 8 screws
* 1 screwdriver

<gallery mode="nolines" widths=200px heights=200px>
Knee04.jpg|
</gallery>

Step 2 - Fit the cruciate ligaments

<gallery mode="nolines" widths=200px heights=200px>
Knee05.jpg|
</gallery>

Step 3 - Screw the ligaments down

<gallery mode="nolines" widths=200px heights=200px>
Knee06.jpg|
</gallery>

Step 4 - Create joint capsule by wrapping the joint with stretch wrap

Step 5 - Add the collateral ligaments

<gallery mode="nolines" widths=200px heights=200px>
Knee07.jpg|
</gallery>

== Production Information ==

* Vinyl tubing - 9mm outer diameter, approx. 200mm long pieces (x4 per set)
* Screws - 25mm long (x8 per set)
* Screwdriver to match screw heads (x1 per set)
* Stretch wrap e.g. 20um thick, 100mm wide roll (x1 per set)
* Pine timber - clean sawn, 90mm x 45mm (or near equivalent)
:* Femur - 200mm long with one end shaped into a curve - see photo (x1 per set)
:* Tibia - 200mm long (x1 per set)

Using a 10mm drill bit (i.e. wider than the tubing) drill the holes to accommodate the cruciate ligament tubing - just on either side of the middle of the articular faces and at an angle of 45 degrees. A drill press is essential for safety and to keep all parts uniform and interchangeable during class use. Rotate the lower part of the drill press to 45 degrees and make up a jig to hold the work. Make sure that all work is securely held with clamps and ensure that the drill does not penetrate further than is safe.

Click on the image to enlarge.
<gallery mode="nolines" widths=200px heights=200px>
Knee08.jpg|
</gallery>

Using a smaller drill bit (diameter to suit the screws) drill guide holes for the cruciate screws - mid-line and about 25mm further away than the large holes. Again, use a jig and a drill press (with the lower part returned to horizontal).

Test the tubing in the cruciate holes and mark where the screw holes should be on the tubing. Multiple tubing pieces can be cut to be 25mm longer at either end and can be pre-punched for the screws.

To mark where the collateral ligament will be screwed down use the tubing holes as a template. Use a jig and a drill press to drill these guide holes in the same position on both sides of the Tibia and Femur.

Once the wooden pieces are satisfactorily shaped and drilled, they should be sanded well and varnished.

'''Creators:''' Rachel Lissaman (academic support), Fieke Neuman (design), Alex Witherow (preparation of wooden elements). All from [http://www.otago.ac.nz/anatomy Department of Anatomy], [http://www.otago.ac.nz University of Otago].

'''Keywords:''' Teaching, Anatomy, Joints, Science, Biology

[[Image:CC.png|link=http://creativecommons.org/licenses/by-nc-sa/4.0/]]

This work is licensed under a [http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License]

Wooden Knees - Revision history

Neufi03p at 01:15, 23 September 2016

Neufi03p: Created page with "A wooden model used to explore the structures of synovial joints, with the knee as an example. Two pieces of wood represent the femur and tibia, with the tubing standing in fo..."