Muscular dystrophies are neurologic disease with higher morbidity and mortality. Cardiac function and respiratory muscles can be affected, in addition with skeletal muscle deficiency . Lung function is classically assessed with functionnal pulmonary tests (FPT) . Ultrasound recently emerged as a non-invasive tool to assess diaphragm function.

The aims of the study are:

• to provide the spectrum of diaphragm ultrasound in patients with muscular dystrophies
• to assess the correlation between diaphragm ultrasound and FPT
• to assess the correlation between diaphragm ultrasound and cardiac function

Inclusion Criteria:

• Duchenne muscular dystrophy,
• Becker muscular dystrophy,
• LGMD,
• myotonic dystrophy type 1 and type 2,
• metabolic myopathy,
• mitochondrial myopathy,
• FSHD1 and 2,
• myasthenia

Exclusion Criteria:

• history of cardiac surgery
• history of thoracic surgery
• brain traumatism

Patients with neuromuscular diseases admitted for a cardio-respiratory function evaluation