The Elastic Nail is a flexible intramedullary fixation device designed primarily for pediatric long bone fractures and selected adult fractures. Also known as Titanium Elastic Nails (TENs), these implants are typically made of titanium alloy, which offers excellent elasticity, biocompatibility, and shape memory. The nail's flexibility allows it to be inserted in a curved, pre-bent shape, providing three-point fixation within the medullary canal.

Elastic nails are inserted retrograde or antegrade through small incisions near the metaphysis of long bones. They are available in various diameters and lengths, and are typically used in pairs to ensure adequate axial and rotational stability. Their minimally invasive technique preserves the periosteal blood supply, reduces soft tissue trauma, and promotes quicker recovery.