Shear wave elastography of median nerve at wrist and forearm. Heterogeneity of normative values – response to authors

We read with interest the letter of Abdelmohsen Bedewi, et al. concerning the heterogeneity of the normative values of the median nerve in shear wave elastography.1 The authors investigated 20 wrists of healthy patients of Asian ethnicity with an average age of 31. The mean value of nerve elasticity at the wrist was 20.78 kPa which was lower than the normal wrist values observed by Kantarci, et al. (31 - 32 kPa)2 and much lower than the normal values observed by our group (43.6 kPa)3. There may be several reasons for these discrepancies, although we believe that it probably results from two main differences.

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