Erratum to: J Med Ultrasonics DOI 10.1007/s10396-013-0502-z

The original version of this article unfortunately contained errors.

In Fig. 4, “Trapezius” should be “Trapezius (upper)”.

In the Discussion section, in the first paragraph, in the second sentence, the words “and rotation angles” should be deleted.

Also in the Discussion section, in the second paragraph, in the second sentence, “rearpositions” should be “rear positions”.

In Figs. 7 and 8, “Left Trapezius” should be “Left upper trapezius”, “left Flexor digitorum Superficialis” should be “Left erector spinae”, and “Right Flexor digitorum Superficialis” should be “Right erector spinae”.