Minimal important improvement thresholds for the six-minute walk test in a knee arthroplasty cohort: Triangulation of anchor- and distribution-based methods

The 6-minute walk test (6MWT) is a commonly used metric for measuring change in mobility after knee arthroplasty, however, what is considered an improvement after surgery has not been defined. The determination of important change in an outcome assessment tool is controversial and may require more than one approach.