Quantifying Region-Specific Elastic Properties of Distal Femoral Articular Cartilage: A Shear-Wave Elastography Study

Figure 1

(a) The participant was supine, with one knee fixed on a quadriceps femoris exercise board at 120° of flexion. (b) B-mode maps for measuring the thickness of the distal FAC. (c–e): SWE maps for measuring the stiffness of the distal FAC. Upper images: color-coded box presentations of distal FAC elasticity were shown (the image color represents stiffness: blue represents soft while red represents stiff). Lower images: B-mode images of the distal FAC. The Q-Box™ is shown on the right. IN: intercondylar notch; MFC: medial femoral condyle; LFC: lateral femoral condyle.

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