由于骨盆带肌肉无力而呈典型的鸭步，肩带肌肉萎缩无力形成翼状肩或游离肩，腹肌和髂腰肌的萎缩无力形成特征性的Gowers征。
O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis O O O O O B-sym I-sym O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O O B-sym I-sym I-sym O B-sym I-sym I-sym O B-bod I-bod O B-bod I-bod I-bod O O O O O O O B-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis I-dis O