EndoLab - Implant Testing Services Implant Testing

Knee implants
all procedures accredited

Knee Constraint Test - ASTM F1223Knee Constraint Test - ASTM F1223 Dislocation Mobile Bearing - ASTM F2724Dislocation Mobile Bearing - ASTM F2724 Knee Contact Pressure Test - PI-17Knee Contact Pressure Test - PI-17 Tibial Component Finite Element Analysis - ASTM F3334Tibial Component Finite Element Analysis - ASTM F3334 Tibial Tray Fatigue Test - ISO 14879-1/ ASTM F1800Tibial Tray Fatigue Test - ISO 14879-1/ ASTM F1800 Patella specification - ASTM F1672Patella specification - ASTM F1672 Knee surface analysis - ISO 7207-2Knee surface analysis - ISO 7207-2 Knee wear test - ISO 14243-1/3Knee wear test - ISO 14243-1/3 Fatigue Test under High Flexion - ASTM F2777Fatigue Test under High Flexion - ASTM F2777 Fatigue Test Baseplate/Bearing Fixation - ASTM F2723Fatigue Test Baseplate/Bearing Fixation - ASTM F2723 Fatigue Test Baseplate/Bearing Fixation under Torsional Loading - ASTM F2722Fatigue Test Baseplate/Bearing Fixation under Torsional Loading - ASTM F2722 Knee loading profiles - ASTM F3141Knee loading profiles - ASTM F3141 FEA knee femoral component - ASTM F3161FEA knee femoral component - ASTM F3161 Unicondylar tibial tray fatigue test - ASTM F3140Unicondylar tibial tray fatigue test - ASTM F3140 Knee Condyle Fatigue Test - ASTM F3210/ PI-73Knee Condyle Fatigue Test - ASTM F3210/ PI-73 Durability performance patellofemoral joint - ISO 14243-5Durability performance patellofemoral joint - ISO 14243-5 Stemmed femoral knee component fatigue test - PI-53Stemmed femoral knee component fatigue test - PI-53 Specific Requirements for Knee-joint Replacement Implants - ISO 21536Specific Requirements for Knee-joint Replacement Implants - ISO 21536 Test of Modular Knee Implants - ASTM F1814Test of Modular Knee Implants - ASTM F1814 Particular requirements for joint replacement implants - ISO 21534Particular requirements for joint replacement implants - ISO 21534 Knee Specification - ASTM F2083Knee Specification - ASTM F2083

Tibial Tray Fatigue Test - ISO 14879-1/ ASTM F1800

Normative References  



ISO 14879-1: Implants for surgery - Total knee-joint prostheses - Part 1: Determination of endurance properties of knee tibial trays

ASTM F1800: Standard Practice for Cyclic Fatigue Testing of Metal Tibial Tray Components of Total Knee Joint Replacements

ISO 21536: Non-active surgical implants - Joint replacement implants - Specific requirements for knee-joint replacement implants

ASTM F2083: Standard Specification for Knee Replacement Prosthesis

The tibial trays in a total knee endoprosthesis are subjected to fatigue stress. The worst-case condition occurs if medial loading is applied without bone support. To simulate this worst-case scenario, we fixate the tibial trays unilaterally using a metal block. To avoid restraint forces, EndoLab® uses a load application mechanism allowing free movement on the horizontal plane.

Safety against fracture is determined up to 10 million cycles, testing five implants at 900 N maximum load (ISO requirements). Due to clinical fractures of implants that have passed fatigue testing at 900 N, EndoLab® recommends testing at a higher load level of 2,000 N. In contrast, tibial tray designs with short pegs did fail at 900 N, with no clinical evidence of fatigue failure.  


Implant Testing - Tibial Tray Fatigue Test - ISO 14879-1/ ASTM F1800 Tibial Tray Fatigue Test - ISO 14879-1/ ASTM F1800