Work Item
ASTM WK14304

New Test Method for Evaluating Mobile Bearing Knee Tibial Baseplate Rotational Stops

1. Scope

1.1 This test method covers a laboratory based in-vitro method for evaluating the mechanical performance of materials and devices being considered for replacement of the tibio-femoral joint in human knee joint replacement prostheses in mobile bearing knee systems.
1.2 Mobile bearing knee systems permit internal external rotation to take place on one or both articulating surfaces. Some designs place physical limits or stops to the amount of rotation. Other designs may have increases of resistance force with rotation.
1.3 It is the intent of this test method to describe test parameters that define physiologically based performance requirements for mobile bearing knee systems intended to replace the tibiofemoral joint of the human knee. This test method is applicable for both total knee and unicompartmental knee replacements.


orthopedics; arthroplasty


may be adopted by FDA; useful in research, development, and quality control of mobile bearing knee designs

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: F04.22

Committee: F04

Staff Manager: Kathleen Chalfin

Work Item Status

Date Initiated: 02-09-2007

Technical Contact: Leslie Gilbertson

Item: 001

Ballot: F04.22 (07-01)

Status: Will Reballot Item

Item: 001

Ballot: F04.22 (07-03)

Status: Negative Votes Need Resolution

Item: 015

Ballot: F04 (08-01)

Status: Ballot Item Approved