Knee anatomy: Open Knee(s), specimen oks009, Open Knee(s) Development Team.
Source: https://simtk.org/svn/openknee/oks/oks009/Geometry/
Source assembly: https://simtk.org/svn/openknee/oks/oks009/Model/Connectivity.xml
Source license: https://simtk.org/svn/openknee/license.txt
License: Creative Commons Attribution-ShareAlike 3.0 Unported
https://creativecommons.org/licenses/by-sa/3.0/

The derived open-knee-v6.glb, anatomy-motion-v6.json and clinical-*-v6.png
assets are distributed under CC BY-SA 3.0. Attribution and the same license
must accompany further adaptations. No endorsement is implied.

Changes: meshes welded and simplified; colors and bone normal textures added;
menisci omitted for visual clarity; capsule cutaway, landmark traces and
resection pieces added; prescribed flexion and ligament interpolation added.
These modifications have not been validated by the source team.

The source includes femur, tibia, fibula, patella, femoral cartilage, medial
and lateral tibial cartilage, MCL, LCL, ACL and PCL from one reference knee.
The collateral ligaments are tissue surfaces, not cylinder approximations.

Clinical limitations:
- Reference anatomy, not a patient-specific model.
- Cartilage footprints follow the source anatomy, modified to idealized 2 mm
  normal-offset shells. Native cartilage is not uniformly 2 mm thick.
- Capsule and reference lines are illustrative, not segmented capsule data.
- Kinematics, rollback, patellar tracking and tissue interpolation are
  prescribed demonstrations, not validated contact/strain calculations.
- Resection demonstrations show the supplied technique's 6 mm concept.
  Implant geometry, bone loss, cartilage wear and saw kerf need clinical
  measurement. Do not use this model as a surgical guide.
- Resurfacing envelopes are conceptual, not implant manufacturer CAD.

Original HRA reference (not used in the new viewer): Browne, Kristen;
Schlehlein, Heidi. 2022. 3D Reference Organ for Knee, Female, Left v1.1.
https://doi.org/10.48539/HBM445.ZKHR.632 . CC BY 4.0.