BoneTag is a unique and universal device. Placed inside knee prostheses, BoneTag enables communication with all brands of surgical orthopedic implants by connecting them and making them smart. The BoneTag device provides traceability throughout the entire lifetime of the prosthesis, offering an unprecedented ability to evaluate in vivo au cours du temps. BoneTag solves a long-standing need for traceability, while also founding an international registry of surgical implants that is essential for improving prostheses.



Practitioners and patients

BoneTag offers medical practitioners and patients access to the characteristics of surgical prostheses after they are implanted. No other system can do that at this time. With BoneTag, practitioners track prosthesis behavior (notably bone adhesion and temperature) over time without having to resort to further examinations, which can be both costly and invasive.


Prosthesis manufacturers

With the BoneTag, device, prosthesis manufacturers can ensure complete traceability right from the factory. BoneTag makes it easier to manage inventory, while transforming prostheses into smart implants that are equipped with the ability to evaluate performance and be queried. This helps manufacturers ensure compliance with legal traceability requirements.


BoneTag is an electronic device that uses battery-free RFID technology (Radio Frequency Identification), associated with pressure and temperature sensors.

BoneTag fulfills three key functions starting from the moment it is integrated into a knee prosthesis, during the surgical procedure:

  • Accurate in vivo identification of the prosthesis
  • Traceability over time
  • Early detection of infection or loss of prosthesis adhesion with the bone

Power: the passive RFID chip is connected to its own integrated antenna. The chip and internal temperature and pressure sensors are powered only when being accessed by the reader.


2.5 million knee prostheses are implanted every year around the world, including about 100,000 in France and 800,000 in Europe. Our R&D team is currently examining the adaptation of BoneTag to other types of implantable medical devices.

Industrial property

The innovative technology used in the BoneTag device is protected by several international patents.


Stéphane Naudi

Orthopedic surgeon and founder of BoneTag

Arnaud Vena

Lecturer at University of Montpellier, Institute of Electronics and Systems

Brice Sorli

Lecturer at University of Montpellier, Institute of Electronics and Systems

Manon Chevalier

Quality assurance & regulatory affairs manager

Sylvain Dutrieux

PhD student in electronic engineering

Stéphan Cahuzac

Senior electronic technician

Dr Olivier May

Orthopedic surgeon, member of the French Society of Hip and Knee Surgery

Dr Nazim Mehdi

Oorthopedic surgeon, in charge of relations with international learned societies for foot surgery

Dr Nicolas Fouilleron

Orthopedic surgeon

Dr Elisabeth Baumelou-Torck

Former vice-president of the French National Commission for the Evaluation of Implantable Devices and Health Technologies

Scientific and technology Partners


Financial and institutional Partners