We thank Sánchez-Quintana et al. for their interest in the article by Omar Yassef Antúnez Montes.1 If we correctly understand their main concerns and messages, they have continued to misunderstand the original dissection protocol of Torrent-Guasp, insisting that it was based on some imaginary “pre-existing anatomical boundaries”, thus creating some imaginary “planes of division”.

Although the principle of heart dissection based on the orientation of the predominant fiber at a given point, along with the basic histological compendium, has been presented and explained in detail many times,2–5 with all its advantages and restrictions, it seems that a certain school of thought still does not understand the principle of “predominance” in the myocardial fiber array. Edward Sallín even demonstrated with mathematical models the requirement of helical fibers to achieve a myocardial work close to 90% ejection fraction.6

This correlation1 is motivated by the peculiar forms in which postinfarction intramyocardial dissecting hematomas dissect planes of cleavage in the areas described by the helical band,7 and evidently without the intervention of a dissector. As I mentioned previously, myocardial function, is the distinctive feature for determining the credibility of the structure.1,5

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