The anatomical surfaces were extracted from named adult male Z-Anatomy / BodyParts3D meshes distributed by Anatria-3D. All source world transforms were retained before one shared conversion to centimetres. X is anatomical left, Y superior, and Z anterior. The thoracic origin is at [0, 1.30, 0] metres in the source frame.
Source geometry: Z-Anatomy, Gauthier Kervyn and contributors; BodyParts3D / DBCLS, Kousaku Okubo and collaborators; Anatria-3D segmented GLB exports. Adapted geometry retains CC BY-SA 4.0 and the inherited BodyParts3D CC BY-SA 2.1 Japan attribution chain. The source notice, anatomy license, Three.js license, and file hashes accompany this publication.
The urethral stricture atlas supplied the requested visual and asset-preparation reference. The chest scene uses thoracic surfaces from the same anatomy family; it does not use the pelvic crop as chest anatomy.
The resection boundary, rib cut surfaces, intercostal sheet, thin pleural display layer, subcutaneous envelope, skin panels, titanium mesh, rib plates, and fixation points are authored teaching additions. The implants are generic. Their dimensions and spacing are illustrative, not a manufacturer specification or fixation recommendation.
The resting omentum and muscles use original atlas surfaces. During transfer, these crossfade to smooth authored envelopes fitted to the defect. The envelopes prevent folded source surfaces from intersecting after deformation. Their displacement and the transfer route are teaching approximations, not a simulation of tissue mechanics or a validated vascular dissection. Visible pedicle context does not establish a complete vascular map. The thin lateral pleural layer is an authored display surface, not a separately segmented parietal pleura. The anterior deep interface represents mediastinum centrally and pleural regions laterally.
The proposed composite sequence and illustrative plate pattern were specified for this teaching project. These sources do not validate every combination or establish a universal approach. The animation is a draft for surgical review.