Hypospadias Surgery | Prof. Dr. Ahmed Hadidi

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INFORMATION

DOCTORS - PART 3

Use of ventral skin for neourethra

Fig. 6 a–d: Use of ventral skin distal to the meatus to reconstruct a partially epithelialized neourethra

[A] Combined Use of Prepuce and Skin Distal to the Meatus

  • Lateral based flap (LAB) by Hadidi (2003, modified 2009)
  • Lateral oblique flap by Hook (1896)
  • One stage repair for proximal hypospadias by Broadbent (1961)
  • Parameatal foreskin flap by Koyanagi (1983)
  • Yoke repair by Snow (1994)

[B] Scrotal Skin (Not Recommended)

  • Bouisson (1861)
  • Rosenberger (1891)
  • Rochet (1899)
  • Lowsley and Begg (1938)
  • Beck (1897)
  • Cecil (1946)

[C] Dorsal Penile Skin

Davis (1940) tubed the dorsal penile skin proximally directed. Penile gymnastics required for this procedure were considered too demanding.

[D] Different Grafts

  • Nove-Josserand (1897) – split-thickness skin graft
  • Devine and Horton (1961) – preputial full-thickness graft
  • Bracka (1995) – full-thickness skin graft (two-stage)
  • Mommelaar (1947) – bladder mucosa
  • Humby (1941) – buccal mucosa

General Principles

The ideal surgery time is between 3 and 18 months. Fine instruments and magnification are preferred. Haemostasis using a tourniquet or epinephrine is critical. Urethroplasty is performed around a 10 Fr catheter.

Choice of Operative Technique

More than 300 surgical techniques are described. Surgeries vary by tissue used. The author recommends:

  • Inverted Y technique for glanular hypospadias
  • Y-V Glanuloplasty modified Mathieu for distal hypospadias
  • Lateral based flap for proximal hypospadias
  • Two-stage repair for perineal hypospadias
Recommendations for hypospadias repair

Fig. 7: Recommendations for primary hypospadias repair


Grade I or Glanular Hypospadias: The Double Y Glanuloplasty (DYG)

Ideal for patients with glanular hypospadias and mobile meatus. Contra-indicated if the meatus is not mobile.

Operative Steps:

  • Inverted Y incision outlined on the glans
  • Two diverging limbs incised along upper edge of meatus
  • Longitudinal midline limb to tip of the glans
  • Space created for new urethra
  • Inverted Y sutured as inverted V
  • Glans mobilized to wrap around urethra
  • 24 hours urinary diversion and dressing
Double Y Glanuloplasty

Fig. 8: The Double Y Glanuloplasty (DYG) Technique