Spheres are simple 3D geometrical primitives, which when arranged in specific patterns, can form structures exhibiting fractal characteristics. Consequently, spheres are used to construct breast phantoms for x-ray imaging. This study aims to apply this approach of creating complex breast phantoms to bone applications. For this purpose, we utilized realistic tibia outlines based on Computed Tomography patient data and a 3D texture derived from spherical geometrical primitives. Then, these were combined to generate a trabecular bone model. Three bone models were created, and x-ray planar images of these models were produced using a dedicated x-ray imaging simulator. The models were evaluated by orthopedic physicians, who confirmed the realistic appearance of the trabecular structures. The bone model is intended for use in osteoporosis research studies and 3D printing techniques.