Onlay Island Flap in the Repair of Mid and Distal Penile Hypospadias Without Chordee

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Abstract
The onlay island flap is a variation of the transverse preputial island flap for hypospadias repair. It is useful in patients without fibrous chordee whose meatus is mid penile or subcoronal. This technique was used in 50 patients and the results were compared to those of 34 patients undergoing the Mathieu meatal-based flap (flip-flap) during the same period. The cosmetic results with the onlay island flap were quite satisfactory and the complication rate was 6 per cent, which was identical to that observed with the Mathieu repair. The onlay island flap is applicable particularly in patients with mid shaft hypospadias without chordee, if the meatus is too proximal for a Mathieu repair and in patients with distal penile hypospadias with deficient ventral skin.