Specificity of the Femoral Slump Test for the Assessment of Experimentally Induced Anterior Knee Pain

December 2012
Publication year: 2012
Source:Archives of Physical Medicine and Rehabilitation, Volume 93, Issue 12



Lai W-H, Shih Y-F, Lin P-L, Chen W-Y, Ma H-L. Specificity of the femoral slump test for the assessment of experimentally induced anterior knee pain. Objective To assess the specificity of the femoral slump test (FST) when assessing experimentally induced anterior knee pain. Design Cross-sectional, exploratory study. Setting Research laboratory. Participants Asymptomatic subjects (N=12; 6 men; 6 women) for the study. An experimental pain model was used to simulate anterior knee pain by injecting .25mL of hypertonic saline solution (5% NaCl) into the medial infrapatellar fat pad. Interventions Not applicable. Main Outcome Measure The changes in pain intensity and diameter after applying the structure differential maneuver (neck flexion/extension) during the FST were recorded and analyzed. Results Results revealed that the structure differential maneuver of the FST did not alter the pain intensity or diameter in 9 (neck extension) and 10 (neck flexion) out of 12 subjects, which meant that the FST provided appropriate testing responses in 75% to 83% cases when the anterior knee pain did not originate in neural tissues. Conclusions The FST had a specificity of more than .75 when detecting nerve mechanosensitivity problems of anterior knee pain.

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