Knee extension of the model including patella

[Lefteris Benos]

Hi everyone,

I am attempting to get a knee extension of the model including patella, its cartilage as well as the tendon.
The only available geometry that I have found is in the openknee site pertaining to oks001 specimen.

Thus, I used the reference patella geometries in conjunction with the tibiofemoral joint geometry that is included in the "tf_joint_FEBio_v2.feb".

As you can see in the image that I have attached, patella is not in contact with the femoral cartilage.
Is there any geometry including patella in the model.
If yes, where can I found the .feb or the stl. file?

Thank you in advance for your help.

Best,
Dr. Lefteris Benos
Centre for Research & Technology Hellas (CERTH)

knee joint plus patella.JPG (38.24 KiB) Viewed 1054 times

[Ahmet Erdemir]

Dear Lefteris,

oks001 is NOT the specimen modeled in Open Knee(s) - Generation 1, which is in tf_joint_FEBio_v2.feb. You can get the geometries for Open Knee(s) - Generation 1 in the source code repository, specifically at

https://simtk.org/svn/openknee/_gen1/da ... rsion2geo/

Please note that when generating the model (tf_joint_FEBio_v2.feb) a coordinate system transformation was applied to the raw mesh file, which is described in the User's Guide. You need to apply the same coordinate transformation to geometries of extensor mechanism so that they align with the rest of the model.

You may also want to check

https://simtk.org/projects/cphmbkneefem

This is a model from folks at Cal Poly, who extended the Open Knee(s) - Generation 1 by adding the patella.

Best,

Ahmet

[Lefteris Benos]

Thank you for your prompt reply.