ArticleAnnals of biomedical engineering2026
Additively Manufactured Patient-Specific Trabecular Bone Imitations in Anatomical Bone Models for Preoperative Planning and Surgical Training: A Manufacturing Framework.
Article in Annals of biomedical engineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
purposeAdditively manufactured (3D-printed) anatomical bone models are used for medical education and surgical training. Manufacturing of patient-specific anatomies and rare pathologies has improved rapidly in the recent past, enabling training opportunities that were previously restricted to limitedly available anatomic specimens. However, the imitation of patient-specific trabecular bone in additively manufactured bone models remains complex and thus inadequately addressed.
methodsTest specimens in the form of Gyroid and Voronoi lattice cubes were manufactured via fused filament fabrication (FFF)-printing at varying densities with polylactide, polylactide /carbon fiber composite and polyamide /glass fiber composite filaments, and submerged in gelatin. Additionally, trabecular bone test cubes were removed from bovine femoral specimens, and the bone mineral density (BMD) was assessed utilizing quantitative computed-tomography (QCT). Subsequently, haptic drill resistance of all test cubes was evaluated by four orthopedic and trauma surgeons, and the mechanical drill resistance was assessed using a load frame.
resultsMultiple polymer lattice structures and material configurations were evaluated by the surgeons as suitable to mimic actual trabecular bone (Likert ratings between 2.60 and 3.00). Regression analyses of the surgeons' evaluations of both the trabecular bone (R
conclusionThe imitation of trabecular bone models via FFF-printing is feasible and could substantially enhance the haptic feedback in additively manufactured anatomical bone models. Applying the presented manufacturing framework enables the cost- and time-efficient production of patient-specific anatomical models to enhance preoperative planning and surgical training.
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