Active Standard ASTM F2724 | Developed by Subcommittee: F04.22
Book of Standards Volume: 13.02
Significance and Use
This test method is designed to provide a standardized method to determine the constraint of mobile-bearing knee designs with regards to spin-out and spit-out of the mobile bearing.
Similar to constraint testing of total knees (see Test Method F 1223
1.1 This test method is designed to provide a standardized method to determine the dislocation resistance of mobile-bearing knee designs with regard to femoral component disassociation and spin-out/spit-out of the mobile bearing insert.
1.2 Although the methodology described does not replicate all physiological loading conditions, it is a means of in-vitro comparison of mobile bearing knee designs and their ability to resist dislocation of the mobile bearing from the femoral or tibial components under stated test conditions.
1.3 The test method applies only to mobile bearing total knee designs.
1.4 The values stated in SI units are regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F1223 Test Method for Determination of Total Knee Replacement Constraint
ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)