Table 2 Muscle MRI features of the patients
| No | Age at MRI | Muscles with severe fatty infiltration | Muscles relatively preserved |
|---|---|---|---|
| A II-6 | 50 |
Thigh: gluteus maximus, vastus medialis, vastus lateralis, vastus intermedius, adductor magnus, sartorius, gracilis (left), posterior thigh muscles (left), semitendinosus (right) Calf: soleus (left), extensor digitorum longus, extensor hallucis longus, tibialis anterior |
Thigh: rectus femoris, adductor longus Calf: soleus (right), peroneus longus, peroneus brevis, tibialis posterior |
| B II-2 | 45 |
Thigh: vastus intermedius, adductor magnus, semimembranosus Calf: tibialis anterior, extensor hallucis longus |
Thigh: rectus femoris, adductor longus Calf: soleus, gastrocnemius, peroneus longus, peroneus brevis, tibialis posterior |
| B III-1 | 20 |
Thigh: vastus intermedius, adductor magnus (right) Calf: tibialis anterior, extensor hallucis longus |
Thigh: rectus femoris, sartorius, gracilis, biceps femoris, semitendinosus, semimembranosus Calf: soleus, gastrocnemius, peroneus longus, peroneus brevis, tibialis posterior |
| C III-1 | 20 |
Thigh: diffuse mild fatty infiltration Calf: soleus, extensor digitorum longus, extensor hallucis longus, tibialis anterior, extensor hallucis longus | Calf: gastrocnemius, peroneus longus, peroneus brevis, tibialis posterior |
| D II-2 | 34 |
Thigh: vastus intermedius, adductor longus, semitendinosus, sartorius, gracilis Calf: tibialis anterior, extensor hallucis longus |
Thigh: semimembranosus, biceps femoris, rectus femoris Calf: gastrocnemius, peroneus longus, peroneus brevis, tibialis posterior |