Where's the lesion? Myotomes is a handy quick reference guide to the neurological motor examination. It was designed by a neurologist as a ready-reference for use when examining a patient. It lists the commonly tested movements of the upper and lower limbs, and the nerve roots, muscles and nerves that they test. Each item can be clicked to filter the lists - so clicking C7 shows you all the movements and muscles supplied by C7. Clicking radial nerve shows you the movements and muscles supplied by the radial nerve. A separate list covers all the commonly (and less commonly) tested reflexes and their nerve roots. Consult a doctor if you are experiencing neurological symptoms. This app should not be relied upon to make clinical decisions, which remain the full responsibility of the user. Myotomes is an essential reference for neurologists, emergency physicians, family doctors, medical students, paramedics, physiotherapists, chiropractors, osteopaths and other medical professionals – or anyone curious about neuroanatomy and the workings of the human body.