Extremity & Shoulder Replacement Testing

STEMart performs a variety of extremity and shoulder replacement implant testing in accordance with recognized ASTM standard methods, as well as custom protocols for unique or novel designs.

Applicable Standards

• ASTM F1357
• ASTM F1378
• ASTM F1781
• ASTM F1829
• ASTM F2028
• ASTM F2665
• ASTM F2887
• PI-61
• PI-62
• PI-65
• ISO 22622
• ISO 21534

Test Capabilities

• Shoulder Implants
• Fatigue testing
• Glenoid shear testing: Determine the static shear disassembly force of modular glenoid components.
• Glenoid loosening testing: Measure how much a prosthetic anatomic glenoid component rocks or pivots following cyclic displacement of the humeral head to opposing glenoid rims (for example, superior-inferior or anterior-posterior).
• Constraint testing
• Range of motion assessment
• Wear testing: Measure the wear properties of the articulating surfaces within the joint by gravimetric wear measurement.
• Elbow Implants
• Fatigue testing
• Component disassembly testing
• Wear testing
• Wrist Implants
• Range of motion assessment
• Wear testing
• Polymeric creep testing
• Finger Implants
• Fatigue testing
• Range of motion assessment
• Surface finish testing
• Wear testing
• Ankle Implants
• Tibial tray fatigue testing
• Contact pressure testing: Evaluate the pressure distribution and total contact area between the talar component and tibial insert of a total ankle replacement system under different flexion angles and loads.
• Range of motion assessment
• Constraint evaluation
• Wear testing: Include gravimetric analysis, dimensional change evaluation by accelerated aging of polyethylene components, wear particle characterization, surface roughness characterization and CMM measurements.
• Adverse condition testing
• Static and dynamic shear testing
• Bending testing
• Tensile testing
• Coating strength determination

STEMart provides a full suite of mechanical testing services for shoulder replacement and extremity implant including finger, ankle, wrist and elbow. If you want to learn more detail about our service, or would like to consult with the experts at STEMart, please feel free to contact us.