Biomechanical Materials for Precise, Repeatable Testing

Sawbones Leads The Industry With Biomechanical Products & Materials For Testing and Validation

Blocks and Sheets

Rigid foam blocks are an alternative material to human cadaver bone for testing and demonstrating orthopaedic implants, instruments and instrumentation.

Sawbones blocks and sheets may be laminated or shaped for all your custom applications. We create thousands of different combinations and shapes to meet the fast paced demands of regulatory approval and sales demonstrations.

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Composite Bones

Our composite bones mimic the properties of human bones to help you easily and inexpensively simulate load and motion scenarios for medical device development and approval.

Sawbones Composite Bones are used as alternative testing media to human cadaver bone. Achieve confidence in your results with repeatable performance.


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Composite Cylinders

Simulate mid-diaphyseal bone for fracture fixation testing with our hollow or foam filled composite cylinders.

Sawbones Composite Cylinders can be tailored in different sizes and materials to achieve a wide range of properties needed for testing medical devices.



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Materials Guide

Solid Rigid Polyurethane Foam

Solid rigid polyurethane foam provides a uniform structure with only +/-10% variation in density. Material properties cover a broad range of human bone qualities allowing you to select an appropriate density for your study. This closed cell foam conforms to ASTM F-1839-08 “Standard Specification for Rigid Polyurethane Foam for Use as a Standard Material for Testing Orthopaedic Devices and Instruments” and has the largest density range available from 0.08g/cc up to 0.80g/cc (5pcf to 50pcf). See our Biomechanical Validation Studies page for more information.

Cellular Rigid Polyurethane Foam

Cellular rigid polyurethane foam has larger pores to resemble cancellous bone. Cell size ranges from 0.5 to 2.0mm diameter for this primarily closed cell foam. Variation in foam density is ± 10% and is available in a range of densities from 0.12g/cc to 0.32 g/cc (7.5pcf to 20pcf). See our Biomechanical Validation Studies page for more information.

Note: 20pcf cellular foam contains short glass fibers.

Open Cell Rigid Foam

Open cell rigid foam is a composite foam made of urethanes, epoxies and structural fillers. Cell size ranges from 1.5 to 2.5mm in diameter and is more variable than solid or cellular polyurethane foams. Variation in foam density is ±10% and is available in a range of densities from 0.12g/cc to 0.48 g/cc (7.5pcf to 30pcf). See our Biomechanical Validation Studies page for more information.

Note: 30pcf open cell foam contains both closed and open cell walls.

Short Fiber Filled Epoxy (simulated cortical bone)

Sawbones’ unique epoxy formulation is used to simulate cortical bone for structural testing of fixation devices and total joint replacements. Our simulated cortical bone has a density, fracture toughness, strength, modulus and hardness all similar to cadaveric cortical bone. This material is the cortical bone for all our composite bones and is also available in sheets and cylinders. See our Biomechanical Validation Studies page for more information.

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