Abstract
The purpose of this study was to determine the intertester reliability of judgments based on tibiofemoral joint abduction (TFJA) tests of the medial collateral ligament (MCL). The TFJA tests were performed by three physical therapists on 50 patients with unilateral knee problems. The therapists used the techniques they normally use in clinical practice and tested TFJA with the knee in both 0 and 30 degrees of flexion. Three variables were evaluated: the amount of TFJA, pain elicited during the test, and the type of end-feel. When the test was performed with the subjects' knees in 0 degrees of flexion, the weighted Kappa value for judgments of motion was .06, the Kappa value for judgments of whether pain was elicited was .40, and the Kappa value for end-feel was .00. For the 30-degree test position, the weighted Kappa value for judgments of the amount of TFJA was .16, and the Kappa values for judgments of pain and end-feel were .33 and .38, respectively. The results suggest that judgments based on TFJA tests may not be reliable when taken in a clinical setting by physical therapists.
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