Fig. 1From: Hyaluronic acid injection to coronal sulcus of the penis for the treatment of premature ejaculation: a retrospective observational studya The diagrammatic presentation of coronary sulcus injection shows that hyaluronic acid is only located in the coronary sulcus area after injection, and the glans penis will not be significantly enlarged. b The schematic diagram of Fan technique shows that the hyaluronic acid nodule fills the entire glans glans after regional injectionsBack to article page