Numalogics Advances Virtual Testing for Orthopedic Screw Evaluation

Orthopedic screws are traditionally evaluated through physical testing to determine their resistance to axial pullout from bone-like material. Such testing can be affected by variations in experimental conditions and requires physical samples.

To address this, Numalogics with Sawbones developed Endpoint, a cloud-based tool that virtually replicates standardized pullout testing for metallic bone screws. Developed using Ansys SpaceClaim, Ansys Mechanical and Ansys LS-DYNA, the tool models screw-foam interaction and foam failure behavior. Its results were validated against experimental tests and the approach followed ASTM F543, FDA computational modeling guidance and ASME VVUQ requirements. Endpoint has received FDA qualification through the MDDT program, supporting its use as regulatory-relevant evidence for orthopedic screw evaluation.

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