I have read the publication by Dr Berta Kowalska(1) on the utility of ultrasonography in the diagnosis of postoperative neuropathies, with great interest. When in 2001, a colleague of mine told me that he could diagnose neuropathies of the upper extremity in an ultrasound examination, I thought it was impossible. I even wondered how ultrasound imaging of the nerve can replace its functional assessment possible thanks to a nerve conduction study (NCS) or electromyography (EMG). In the subsequent years, US imaging was becoming more and more common in my daily surgical practice. What is more, it even started to supersede other imaging methods, which were, as it would seem, more accurate, such as magnetic resonance imaging.