Excellent results of Hypospadias repair surgery – TIP urethroplasty (Snodgrass Repair) for distal penile hypospadias

Hypospadias is one of the most common malformations in boys and affects more than 1 lakh kids in India. At Hypospadias foundation and MITR Hospital, Kharghar, Navi Mumbai, India – we see and manage more than 200 kids every year who have hypospadias and need surgery. These cases are either primary (75%) or those have failed surgery elsewhere (25%)- some of them have failed multiple surgeries elsewhere.

We strongly believe that hypospadias surgical correction should not be taken lightly or casually by any surgeons as first hypospadias surgery is the best chance which the child has. Once the first hypospadias surgery has a complication, more surgeries are needed and still the result may not be optimal. Hence, the surgeon needs to be well trained for hypospadias repair procedure and should have a very keen and passionate interest before he takes up any child up for surgery for hypospadias.

Amongst the various techniques for hypospadias surgery, one of the most popular one is Tubularised Incised Plate (TIP) urethroplasty. TIP repair was first described by Prof Warren Snodgrass and it currently constitutes 70% of all distal and midpenile hypospadias repairs across the world. Due to its universal adoption and remarkable results, it is also known as Snodgrass repair. I had the good fortune of assisting Dr Warren Snodgrass during his multiple visits to India when I was a resident in pediatric surgery at All India Institute of Medical Sciences. I keep bumping him into now and then at pediatric urology conferences, the last one of which was European Society of Pediatric urology Congress in Genoa Italy. We received the best paper award at the conference and it was nice to see Dr Warren Snodgrass applauding us.

While TIP repair or Snodgrass urethroplasty has excellent results, case selection before surgery is very important. The criteria are:

1. Distal or midpenile hypospadias
2. Mild to moderate chordee which is correctable
3. Wide pink elastic urethral plate.

In certain selected proximal hypospadias, Snodgrass repair can be used but on a personal level- a long Snodgrass repair may not be the best option in most cases. We have started using Onlay Island flap repair in most of our proximal hypospadias and all distal/ mid penile hypospadias which are unsuitable for TIP Urethroplasty.

Steps of surgery:

1. Degloving the penis and chordee correction – straightening of the curvature of the penis
2. Midline urethral plate incision
3. Neo-urethra formation on a catheter
4. Second layer coverage with either a dartos flap or spongiosum
5. Penile skin cover with Byars flap which helps in creating a midline closure on underside of penis. After the healing is finished, penis looks like just a circumcised penis. In some selected cases Prepucial reconstruction can be offered.

You can watch the video of a Snodgrass Urethroplasty for a distal penile hypospadias here.

In my experience as an expert hypospadias surgeon, while doing TIP urethroplasty everything has to be done meticulously to prevent complications. If I have to narrow down on two things which have really lessened the complications of hypospadias repair with Snodgrass urethroplasty at our centre are:

• Fashioning a wide caliber neo-meatus- so that there is no narrowing later on
• Providing a second layer cover on new urethra with either spongiosum or a dartos flap.

Master Soham’s parents stay in Latur, Maharashtra and their son was diagnosed to have a distal penile hypospadias at birth. Worried about multiple surgeries and poor outcomes for hypospadias repair- They searched for the best hypospadias surgeon on the internet and landed up in our pediatric urology clinic at MITR Hospital in Kharghar, Navi Mumbai. We did the surgery using a Snodgrass repair technique in First week of May 2014. The surgery went well and child was discharged the evening of surgery. The dressing and catheter were removed 5 days after surgery and now one month after followup the child has an excellent outcome after hypospadias repair surgery. The cosmetic appearance is excellent with a meatus at the tip of penis, straight penis and just a circumcised appearance.

Parents are also happy and overjoyed.