High-quality simulated bonesSimulated bone customization
TANACBONE based on Japanese skeletal data
TANACBONE Application Scenes
Illustration of usage scenes
Dr. Shigehiko Akiyama

Gifu University

Orthopaedic surgery, Professor

Dr. Haruhiko Akiyama

The model bone used until now differed greatly from human bone in both shape and hardness, making it difficult for medical professionals and students to obtain a satisfactory experience. The TANACBONE faithfully reproduces CT data, and its bone quality is close to that of human bone, making it possible to provide high quality hands-on training. I would like to recommend TANACBONE to many people.
Norihiro Nishida

Yamaguchi University Graduate School

Orthopaedic surgery, Assistant Professor

Dr. Norihiro Nishida

We believe that the use of skeletal models with characteristics of their race, gender, and age is optimal for surgical practice, explanation to patients, and development of medical devices for Japanese and Asian people. We are very pleased that the simulated bone created from patient data through our joint research has been completed and is now available to society. As a medical professional, I would be very happy if this bone simulator can contribute to society.
Yoshimitsu Okazaki

National Institute of Advanced Industrial Science and Technology

Dr. Yoshimitsu Okazaki

JIS T 0311 Mechanical Test Methods for Metallic Bone Screws, one of the methods for evaluating mechanical safety of implants, has been revised in 2022. The first edition of JIS was established in 2009, but only foreign-made simulated bone according to ASTM F1839 was cited as the simulated bone for mechanical testing. In this revision, the Japanese-made bone simulants are added to the foreign-made ones, and the mechanical properties of the bone simulants for mechanical tests and their evaluation test methods are shown as references in the Annex. This is expected to be of great use in the development of implant evaluation methods, surgical simulation and training, and surgical instruments. In particular, by combining CT technology and simulated bone manufacturing technology, we can expect to manufacture custom-made simulated bones that are optimized for each patient's skeletal structure, region, and medical conditions such as osteoporosis. Although there are quantity limitations in mechanical testing using biological bones from bone banks and other sources, now that it is possible to provide bone simulants for mechanical testing with stable quality in accordance with JIS and ASTM, we expect to see more active use of bone simulants for mechanical testing.
Hands-on Practice and Demonstration of Procedures
With simulated bones that feel more like clinical practice hands-on seminar with a more clinical feel.

TANACBONE is a simulated bone made from Japanese CT data and developed for practicing techniques such as osteotomy, guide pin insertion, nail and lag screw insertion, cup and stem placement, screw and plate placement, reaming, anchor placement, and decompression using common orthopedic surgical instruments. The new product is simple, yet clinically relevant. It is designed to be simple, yet to enable practice in a manner similar to that of clinical practice. In addition, more advanced practice is possible by attaching muscles, ligaments, nerves, etc.


I could see the difference between cortical and cancellous bone during screw insertion. The hands-on experience with the use of x-rays was meaningful and close to clinical practice.
The feel of cancellous and cortical bone was realistic. Peripheral tissues such as ligaments and muscles were also close to clinical.
The acetabular model also has two layers in the acetabulum, so it was good practice to see the difference in feel when entering the trabecular bone from the cortical bone during reaming.
Evaluated / Non-evaluated
By conducting tests that cannot be performed in clinical trials on simulated bones, possible failure events in clinical use are verified in advance.

TANACBONE has been used in in-house evaluations during medical device development as well as in non-clinical studies for medical device applications.

[ Example ]

・Pulling test of screws using test blocks

・Plate risk validation study using a femur model


Since the test conditions could be controlled by changing the density of the simulated bone, it was possible to conduct worst-case tests that would not be possible in a clinical trial, leading to enhanced risk management.

※Please contact us to discuss the contents of your examination.

Evaluated / Non-evaluated
Basic specifications of TANACBONE
○ Two layer model

It is made of two layers of rigid polyurethane foam material with different densities.

LD (Low Density)

The softness of the cancellous bone allows for more clinical practice of techniques such as cutting, screw insertion, rasping, and reaming.

HD (High Density)

This model is made of hard cancellous bone. It is used for checking the strength of implants as well as for technique practice.

○ One layer model

The entire piece is made of rigid polyurethane foam material or rigid urethane material of the same density.

In addition to practicing the technique, it is used to check the strength of implants.

One / Two layer model
Half custom

○ Density change

Density can be changed for both 2-layer and 1-layer models.

Please specify the desired grade by referring to the values in the "Test Blocks" list. However, the values in the table are typical values for blocks, and may differ slightly from the values when molded into simulated bone.

○ X-ray compatible processing

Almost all products can be processed for x-ray compatibility.

Even after processing, the density and cutting feel remain virtually unchanged.

○ Transparent model

The implants are used for display at exhibitions and other events. Molding process with inserts of supplied implants is available.

Fracture line processing and hole punchingWe can also insert fracture lines in your desired design. We can also provide detailed processing, such as a bottom hole.


※Density and dimensions of model bones are approximate. Density and dimensions may vary due to molding process.

※Due to the characteristics of the material, it may turn yellow over time, but this does not pose a problem in terms of quality or physical properties.

※For the 2-layer model, some of the color of the trabecular bone may show through.

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