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Additive Manufacturing for Metal Applications in Orthopaedic Surgery.

Metallic additive manufacturing, a process by which metal structures are created in a layered fashion, is poised to revolutionize orthopaedic implants and instruments. It allows for the design and manufacture of devices, which not only macroscopically more closely match patient-specific anatomy but also have improved microscopic detail for more rapid and durable host integration. In addition, additive manufacturing-designed implants have improved biomechanical properties and fixation systems allowing use in areas where current implants are not well suited. This review provides an overview of the technology and both its current and future use in orthopaedic surgery.