6th October 2026
South East Thames Shoulder & Elbow Group (SETSEG)
The Shard, London
MagnetOs™ Putty
Features
- Resilient, moldable handling that stays in place during compression.
- NeedleGrip™ technology grows bone even in soft tissue without added cells or growth factors.
- Free of animal- or human-derived materials and stored at ambient temperature.
MagnetOs™ Putty is our most robust mouldable formulation. Simply warm it in your hands, mold to shape, and fill voids in joint fusion or traumatic indications of the foot, ankle, and upper extremity.
Key Features
- NeedleGrip™ Technology: Polarises macrophages to the pro-healing M2 phenotype, stimulating bone growth without cells or growth factors.
- Predictable Handling: Ready-to-use, twistable, tearable, and mouldable. Resists migration and irrigation while staying put under compression.
- Safe Composition: Contains no animal or human tissue. Stored at ambient temperature (max 45°C / 113°F) with no thawing required.
Function of MagnetOs Putty
MagnetOs Putty delivers resilient handling with the full benefits of NeedleGrip™ surface technology. It supports predictable fusions and traumatic reconstructions of the extremities by harnessing the immune system to form bone even in challenging environments.
MagnetOs Clinical Evidence
Supported by scientific and clinical studies demonstrating bone formation without added cells or growth factors. Used in procedures such as double arthrodesis of the talonavicular and subtalar joints, with evidence of bony union and construct stability. Explore the broader body of evidence through Project Fusion.
Interested in the MagnetOs™ Putty?
Get in touch with our experts today to learn more
Kuros Biosciences is at the forefront of innovation in orthopaedic solutions, dedicated to advancing patient care through groundbreaking scientific research and development. As the inventors of MagnetOs, Kuros Biosciences leverages extensive expertise in osteoimmunology to deliver products that redefine standards in bone graft technology. With a commitment to evidence-based solutions, Kuros continues to set benchmarks in clinical excellence and patient outcomes.
LEDA Orthopaedics is proud to partner with Kuros Biosciences to bring MagnetOs to trauma and orthopaedic clinicians in the UK. With a focus on exceptional service to both the NHS and the independent sector, LEDA supports surgeons and their teams with the tools they need to achieve superior patient outcomes, combining global innovation with local expertise.
†Results from in vivo or in vitro laboratory testing may not be predictive of clinical experience in humans. For important safety and intended use information please visit kurosbio.com
MagnetOs has been proven to generate more predictable fusions than two commercially available alternatives in an ovine model of posterolateral fusion.
- Duan, et al. eCM. 2019;37:60-73.
- Van Dijk, et al. eCM. 2021;41:756-73.
- Van Dijk, et al. JOR Spine. 2018;e1039
- Van Dijk, et al. J Biomed Mater Res. Part B: Appl Biomater. 2019;107(6):2080-2090.
- Van Dijk, et al. Clin Spine Surg. 2019;33(6):E276-E287.
- Stempels, et al. Spine. 2024;49(19):1323-1331
- Instructions for Use (IFU) MagnetOs Putty (EU).
- Fusco
- Liguori, et al. Cell Mol Immunol. 2021;18(3):711–722.
- Zhang, et al. Cell Tissue Res. 2017.
- Arosarena, et al. J Cell Physiol. 2011;226(11):2943–2952
Frequently Asked Questions
MagnetOs Putty is a robust, moldable synthetic bone graft powered by NeedleGrip™ surface technology. It grows bone even in soft tissue by polarizing macrophages to a pro-healing (M2) phenotype — without the need for added cells or growth factors.
Simply warm the putty in your hands, then twist, tear, or mold it into the desired shape. It is ready-to-use straight from the package, stays in place during joint compression, and resists migration and irrigation.
No. MagnetOs Putty is completely free of animal- and human-derived materials, which can help reduce patient concerns during surgical consent.
It is designed for joint fusion and traumatic indications in the foot & ankle and upper extremity. It can be used to fill voids and spaces in procedures such as hindfoot arthrodesis.