Correction to: Learning curves of two different techniques for the intra-articular injection of the knee joint under fluoroscopic guidance

Correction to: La radiologia medica https://doi.org/10.1007/s11547-017-0847-2

The published version of this article contained a mistake. In Table 1 of the original article, the numbers of successful injections and failed injections were not correct. The correct Table 1 should read as given below:

Table 1 Comparison between supine and lateral techniques