Frenular delta

The frenular delta in human anatomy is located below the penile glans along the penile ventral body. Named by pathologist Kenneth McGrath in 2001, it is composed of the preputial mucosa, and is triangular in shape. The frenulum is located at the tip of the triangle, the ridged bands form the sides of the triangle, and the junctional rim forms the triangle's base.[1] This area, especially the frenulum itself, is reported to be the most sensitive area of the penis.[1] The delta is highly innervated, and is considered to be a specific erogenous zone.[2]

Ventral view of an uncircumcised penis, with frenular delta proximal to the glans penis
Ventral view of a circumcised penis, with frenular delta proximal to the glans penis

References
  1. McGrath K. The frenular delta: a new preputial structure. In: Denniston GC, Hodges FM, Milos MF, editors. Understanding Circumcision: A Multi-Disciplinary Approach to a Multi-Dimensional Problem. New York: Kluwer/Plenum; 2001. p. 199–206.
  2. Winkelmann RK. The erogenous zones: their nerve supply and significance. Mayo Clin Proc. 1959;34(2):39–47. PMID 13645790.


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