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Metoidioplasty, metaoidioplasty, or metaidoioplasty[2] (informally called a meto or meta) is a female-to-male gender-affirming surgery.[3]
Testosterone replacement therapy gradually enlarges the clitoris to a mean maximum size of 4.6 cm (1.8 in)[4] (as the clitoris and the penis are developmentally homologous). In a metoidioplasty, the urethral plate and urethra are completely dissected from the clitoral corporeal bodies, then divided at the distal (far) end, and the testosterone-enlarged clitoris straightened out and elongated. A longitudinal vascularized island flap is configured and harvested from the dorsal skin of the clitoris, reversed to the ventral side, tubularized and an anastomosis (connection) is formed with the native urethra. The new urethral meatus is placed along the neophallus (newly formed penis) to the distal end and the skin of the neophallus and scrotum reconstructed using labia minora and majora flaps.[5] The new neophallus ranges in size from 4–10 cm (1.6–3.9 in) (with an average of 5.7 cm (2.2 in)) and has the approximate girth of a human adult thumb.[6]
The term derives from meta- "change", Ancient Greek αἰδοῖον, aidoion, 'genitals', and -plasty, denoting surgical construction or modification.[2]
- ^ Bordas N, Stojanovic B, Bizic M, Szanto A, Djordjevic ML (2021-10-13). "Metoidioplasty: Surgical Options and Outcomes in 813 Cases". Frontiers in Endocrinology. 12: 760284. doi:10.3389/fendo.2021.760284. PMC 8548780. PMID 34721306.
- ^ a b Hage JJ (January 1996). "Metaidoioplasty: an alternative phalloplasty technique in transsexuals". Plastic and Reconstructive Surgery. 97 (1): 161–167. doi:10.1097/00006534-199601000-00026. PMID 8532774. S2CID 38412526.
- ^ Perovic SV, Djordjevic ML (December 2003). "Metoidioplasty: a variant of phalloplasty in female transsexuals". BJU International. 92 (9): 981–5. doi:10.1111/j.1464-410x.2003.04524.x. PMID 14632860. S2CID 11836091.
- ^ Meyer WJ, Webb A, Stuart CA, Finkelstein JW, Lawrence B, Walker PA (April 1986). "Physical and hormonal evaluation of transsexual patients: a longitudinal study". Archives of Sexual Behavior. 15 (2): 121–38. doi:10.1007/BF01542220. PMID 3013122. S2CID 42786642.
- ^ Perovic, S. and Djordjevic, M. (2003), Metoidioplasty: a variant of phalloplasty in female transsexuals. BJU International, 92: 981-985. doi:10.1111/j.1464-410X.2003.04524.x
- ^ Djordjevic ML, Stanojevic D, Bizic M, Kojovic V, Majstorovic M, Vujovic S, Milosevic A, Korac G, Perovic SV (May 2009). "Metoidioplasty as a single stage sex reassignment surgery in female transsexuals: Belgrade experience". The Journal of Sexual Medicine. 6 (5): 1306–13. doi:10.1111/j.1743-6109.2008.01065.x. PMID 19175859.