Myopathies are a clinically and genetically heterogenous group of muscle diseases characterized by pathologic changes in muscle fibres that compromise their contractile ability. The authors of this book have gathered new research from across the globe and topics discussed in this compilation include inherited myopathies with distinct clinical manifestations; muscle biopsy as a diagnostic procedure in suspected myopathies; inflammation in dysferlinopathies; mitochondrial disorders; dysphagia in the myopathies; and aB-Crystallin (HSPB5) and myofibrillar myopathies.