PI-62

ASTM F1378

Shoulder specification

ASTM F1829

Shoulder glenoid shear

ASTM F2009

Modular connection disassembly test

ASTM F2028

Shoulder glenoid loosening

ISO 21534

Particular requirements for joint replacement implants

PI-61

Reverse shoulder implant wear test

PI-62

Anatomic shoulder implant wear test

PI-89

Resistance to static load of ceramic humeral heads

PI-90

Resistance to torque off head fixation of modular humeral prostheses

Anatomic shoulder implant wear test

Normative References

PI-62: Anatomic Shoulder System Wear Test

The test parameters for anatomic shoulder replacement systems are based on a wear study conducted by Wirth et al [1].

A modified EndoLab® hip joint simulator is used for the testing.

The following motions are applied simultaneously to the implant system: Abduction/adduction, flexion/extension, translation within the plane of abduction/adduction, translation within the plane of flexion/extension as well as forward/backward elevation. A constant load of 756 N (± 50 N) is applied. According to Wirth et al. the translation, resulting in rim loading during abduction/adduction is oriented at a 45° angle from the long axis of the glenoid component. The amount of translation required to generate rim loading during abduction/adduction depends on the radial mismatch between the glenoid component and the humeral component and will be adjusted individually. The wear test is conducted for 5 million cycles. The wear is determined gravimetically.  

[1] Michael A. Wirth, MD, Conrad Klotz, BS, MBa, Daren L. Deffenbaugh, MS, Don McNulty, MS, PE, Laura Richards, Beng, Joanne L. Tipper, PHD: Cross-linked glenoid prosthesis: A wear comparison to conventional glenoid prosthesis with wear particulate analysis. Journal of Shoulder and Elbow Surgery (2009) 18, 130-137  

Your contact person

Jason Steffens, M.Sc.

Head of Tribology, Head of FEA