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Readers of this journal will wish to be aware of an important improvement in the anchoring technology of the frameless copper intrauterine device (IUD), GyneFix® (Contrel Research, Ghent, Belgium). Long-term experience with this IUD is reviewed in a recent publication.1 As it has no supporting frame, anchoring of the IUD in the uterine wall is essential. During the learning period, or if the provider is unsure if anchoring was correctly achieved, it is recommended that the correct position of the IUD in the uterine cavity should be confirmed. This can easily be achieved using ultrasound, by measuring the distance between the uppermost copper cylinder/sleeve and the uterine serosa (SS-distance). However, the ‘anchor’ itself (a knot at the upper end of the polypropylene thread) is difficult to visualise although this may be necessary in some cases. The new ‘visualised anchor’, a …