Figure 2
From: Muscle fat replacement and contractility in patients with skeletal muscle sodium channel disorders

Fat fraction (FF) and contractile cross-sectional area (CCSA) on the different segments. (A,B) Average fat fraction of calf and thigh. Y-axis is fat fraction in percentage. The difference in FF between the proximal segments and distal segments is significant (p < 0.05). (C,D) Average CCSA on cross sections. Y-axis CCSA in mm2. CCSA was significantly higher for patients in the calf, but only nominally so in the thigh, indicating hypertrophy of lower leg muscles.