<prompt> In Which of the following conditions is cardiac involvement NOT a usual feature?Facio-scapulo-humeral dystrophyDuchennes muscular dystrophyFriedreichs ataxiaMyotonic dystrophy  <response>: Facioscapulohumeral muscular dystrophy is a disorder characterized by muscle weakness and wasting atrophy. This condition gets its name from the muscles that are affected most often: those of the face facio-, around the shoulder blades scapulo-, and in the upper arms humeral.no cardiac involvement is seen Ref Harrison20th edition pg 2378 