Assessing Minimal Detectable Changes and Test-Retest Reliability of the Timed Up and Go Test and the 2-Minute Walk Test in Patients With Total Knee Arthroplasty

The TUG and 2MWT have an excellent test-retest reliability in patients with TKA. Clinicians and researchers can be confident that changes in TUG time above 2.27 seconds and changes in 2MWT distances above 14.96 meters, represent a “real” clinical change in an individual patient with TKA. We, therefore, recommend the use of these 2 tests as complementary outcome measures for functional evaluation in patients TKA.