Accurately quantifying knee joint motion is not simple. Skin movement over the medial and lateral femoral condyles is the greatest obstacle to obtaining accurate movement data noninvasively. The KneeKG™ system was developed with the objective of providing high-reliability movement analysis. The KneeKG™ system noninvasively quantifies knee abduction/adduction, axial rotation, and relative translation of the tibia and femur. The average accuracy of the acquisition is 0.4° for abduction/adduction, 2.3° for axial rotation, 2.4 mm for anteroposterior translation, and 1.1 mm for axial translation. This clinical tool enables an accurate and objective assessment of the tri-planar function of the knee joint. The measured biomechanical parameters are sensitive to changes in gait due to knee osteoarthritis and ACL deficiency. This system has the potential to improve understanding of the biomechanical consequences of trauma or degenerative changes of the knee as well as more accurately quantify rotational laxity as detected by a positive pivot-shift test.
KeywordsAnterior Cruciate Ligament Anterior Cruciate Ligament Reconstruction Anterior Cruciate Ligament Injury Gait Cycle Anterior Cruciate Ligament Graft
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