View Full Version : PMMA for Potting Wrist Bones

James D. Johnston
12-19-2000, 02:57 AM
Hello all:

Could anyone offer some helpful suggestions regarding the potting of wrist bones, specifically the triquetrum, lunate and scaphoid bones? I am attempting to test the SL and LT ligaments in tension and am experiencing a lot of difficulty.

I have been using a gypsum product by the name of Dental Stone which acts more as a seat for the bones, as opposed to a material which will "grab" the bones. I am finding the scaphoid especially hard to pot, due to it's strange shape and orientation. Since the gypsum isn't "grabbing" the material I'm fixing the bones with a small S/S pin, which has a habit of pulling through the bone.

I am looking for a new potting material to use. I'm about to try testing with PMMA, but am curious if there are other effective potting materials currently in use.

Thanks, hope someone can help me out.

J. D. Johnston, BSc(Eng)
MSc Candidate
Queen's Univeristy
Department of Mechanical Engineering
Kingston, ON
K7L 3N6

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