Biomaterial Database

Modification of the Koyanagi technique for the single stage repair of proximal hypospadias. 2000

H Emir, and V R Jayanthi, and K Nitahara, and N Danismend, and S A Koff

Section of Pediatric Urology, Children's Hospital and The Ohio State University Medical Center, Columbus, Ohio, USA.

OBJECTIVE We describe a modification of the Koyanagi technique for hypospadias. Use of opposing parameatal-based skin flaps that extend distally to incorporate the inner layer of the prepuce was modified to preserve blood supply to the flaps in an attempt to reduce complications and improve results. METHODS During the last 7 years 20 boys underwent treatment of proximal hypospadias using the modified hypospadias repair. RESULTS Cosmetic and functional, long-term (mean 34 months) results were excellent. Complications consisted of 4 urethrocutaneous fistulas (20%). There were no instances of meatal stenosis, diverticulum or urethral stricture. CONCLUSIONS The modified technique permits 1-stage repair of proximal hypospadias with a low complication rate.

UI	MeSH Term	Description	Entries
D007021	Hypospadias	A birth defect due to malformation of the URETHRA in which the urethral opening is below its normal location. In the male, the malformed urethra generally opens on the ventral surface of the PENIS or on the PERINEUM. In the female, the malformed urethral opening is in the VAGINA.	Hypospadia
D007223	Infant	A child between 1 and 23 months of age.	Infants
D008297	Male		Males
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013521	Urologic Surgical Procedures, Male	Surgery performed on the male genitalia.	Male Urologic Surgery,Male Urologic Surgical Procedure,Male Urologic Surgical Procedures,Male Urological Surgical Procedure,Male Urological Surgical Procedures,Procedure, Urologic Surgical, Male,Procedure, Urological Surgical, Male,Procedures, Urologic Surgical, Male,Procedures, Urological Surgical, Male,Surgery, Male Urologic,Surgical Procedure, Urologic, Male,Surgical Procedure, Urological, Male,Surgical Procedures, Urologic, Male,Surgical Procedures, Urological, Male,Urologic Surgery, Male,Urologic Surgical Procedure, Male,Urological Surgery, Male,Urological Surgical Procedure, Male,Urological Surgical Procedures, Male,Male Urological Surgery,Surgery, Male Urological