Fig. 2.

A Heat map. Patients and muscles are ordered according to the degree of fat replacement. We used the modified Mercuri score, with higher scores rendered with darker red. Age and years of symptoms at imaging are indicated B Thighs and calves section on Axial t1w images from three patients with increasing degree of fat replacement from left to right. SM semimembranosus, ST semitendinosus, BF long long head of the biceps femoris, BF short short head of the biceps femoris, VI vastus intermedius, VL vastus lateralis, RF rectus femoris, VM vastus medialis, Sa sartorius, G gracilis, AM adductor magnus, AL adductor longus, TA tibialis anterior, PL peroneus longus, TP tibialis posterior, So soleus, MG medial head of gastrocnemius, LG lateral head of gastrocnemius