# Open3DModel lower-limb geometry: attribution and licence

Source: Open3DModel – Lower limb – English labels, Open3D project, July 2025 untextured OBJ release, distributed by AnatomyTOOL / CASK Anatomy.

Credit: Open3D project; Jan Kooloos, RadboudUMC; Eungyeol Lee, LUMC; Evie Vereecke, KU Leuven; Koos-Jaap van Zwieten, Hasselt University; George J.R. Maat, LUMC; Daniël Jansma, LUMC; Emily E.C.A. Lowes.

Source and creator information: https://anatomytool.org/content/open3dmodel-lower-limb-english-labels
Complete project credits: https://anatomytool.org/open3dmodel-credit
Official source-file table and disclaimer: https://anatomytool.org/open3dmodel-create
Original untextured OBJ archive: https://caskanatomy.info/open3dmodelfiles/lower-limb/lower-limb-obj.zip

The source geometry and the adapted anatomical geometry distributed here are licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0): https://creativecommons.org/licenses/by-sa/4.0/
Legal code: https://creativecommons.org/licenses/by-sa/4.0/legalcode.en
Retain attribution and modification notices when redistributing, and license adaptations under the same or a permitted compatible licence. No endorsement of this preview or its modifications by the source creators is implied. These anatomy assets and their derivatives are offered under CC BY-SA 4.0; no additional clinic-site terms apply to the rights granted by that licence.

Upstream material: Z-Anatomy, by Gauthier Kervyn (design, 3D, anatomy) and Marcin Zielinski (Python), derived from BodyParts3D, © The Database Center for Life Science; database creator Kousaku Okubo. Z-Anatomy project and original notices: https://github.com/Z-Anatomy/Models-of-human-anatomy . BodyParts3D attribution and licence information: https://dbarchive.biosciencedbc.jp/en/bodyparts3d/lic.html . The Open3DModel derivative used here remains under its supplied CC BY-SA 4.0 licence; no revision-specific upstream relicensing is asserted.

Original archive SHA-256: eec40b5ec833c145e129d7450062c97da7414b402f4da7e71098c1740353e477
Extracted source OBJ SHA-256: 6f3e63affd609d0d4c7db1810fd4a48856363b6f7291557c65d6b9155d9788eb

The source models are supplied as-is and as-available without warranties of anatomical correctness, accuracy, reliability, completeness or fitness for a purpose. They are intended for informational and educational use and are not medical advice or intended for diagnosis or treatment. This preview and its authored injury examples are educational illustrations, not patient measurements or clinically validated models. Consult a qualified physician for diagnosis and personal medical advice. Physical calibration of the OBJ coordinates has not been established.

Only untextured source geometry is used in these modules. The separately listed source textures are not included. The CASK/Open3DModel GPL-licensed viewer was not copied. This independent viewer uses Three.js, OrbitControls and RoomEnvironment under their retained MIT notices; full licence: https://github.com/mrdoob/three.js/blob/r159/LICENSE .

## Modifications in the patellar modules

Named source right-patella bone/cartilage structures were extracted and mirrored together across X=0 for a left-side educational illustration. Source-constrained grid/interface reconstruction and smoothing were authored for the cartilage surface. Educational grade variants add swelling, irregular outer-cartilage degradation, fissures, full-thickness loss and margin erosion as documented by each included variant. Bone geometry is retained apart from the declared side reflection. Materials, normals, shading and teaching presentation were added or computed. These are authored adaptations, not source-provided pathology. Nominal illustration-scale assumptions do not establish anatomical calibration.

Where included, same-source skeletal context is extracted from this OBJ and reflected with normals and winding adjusted to retain handedness. This source correspondence does not establish clinical registration, validated joint contact, attachment mechanics, flexion or patient-specific dimensions. Existing clinical-review and joint-view holds remain unchanged.