Are there any natural homeopathic ways to treat muscular myopathy?

Myopathies. There are many kinds of myopathies, and conventional treatment success with them is variable. http://www.ninds.nih.gov/disorders/myopathy/myopathy.htm if wanting to try homeopathy, i'd suggest collaborative care between a neurologist and well-trained classical homeopath. Your case needs to be explored carefully to find individualizing characteristics that lead to a particular homeopathic remedy.