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The auxetic structures and their applications in bone implants.
| Type of Auxetic Structures | Application in Bone Implants | Advantages and Disadvantages | References |
|---|---|---|---|
| Re-entrant | Bone-implant contact; medical screw | Good NPR effect; longer fatigue life | [22,24] |
| Chiral | Bone scaffold; medical screw | High fracture toughness; limited by chirality | [24] |
| Rotating | Auxetic materials fabrication; medical screw | Better auxetic performance; low stability | [24] |
