Fifteen adults aged 25 to 80 with McArdle myopathy, a metabolic neuromuscular disease caused by myophosphorylase deficiency, underwent muscle imaging examinations at the Garches Reference Centre. The whole-body muscle MRI from which they benefited made it possible to analyze 60 muscles in particular and to specify the phenotype:
- 13 of the 15 patients presented signs in favor of a persistent muscle deficit (half in the neck flexors and the other in the proximal root muscles),
- certain muscles such as the subscapularis, the serratus anterior, the rectus femoris and the erector muscles of the spine were preferentially affected.
These new elements can also constitute a diagnostic aid.
