A case of traumatic long thoracic nerve suffering: high-frequency ultrasound finding

We have read with interest the paper by Nguyen and colleagues, “Magnetic resonance imaging ofdynamic scapular winging secondary to a lesion of the long thoracic nerve” [1]. Magnetic Resonance (MR) found denervation signs of serratus anterior muscle (SAM), suggesting a long thoracic nerve (LTN) lesion. The authors concluded that MR may represent a completion of clinical and neurophysiological examination in cases of LTN injury.We totally agree with the authors about the importance of imaging to evaluate neuropathies. Onthe basis of our experience, alsonerveultrasound(US) should be considered to assess neuropathies, even in small nerves [2]. This technique has widely shown its usefulness to study different peripheral nerve diseases: entrapments, traumatic lesions, tumors, immune-mediated and hereditary neuropathies [3]. US shows its role if associated with clinical and neurophysiological examinations andprovides crucialdata forprognosis, rehabilitation and treatment [4]. Recently, Lieba-Samal and colleagues published US assessment of LTN and they encouraged the use of US for this evaluation