As early as 2003, Dr. Snodgrass realized penile curvature (chordee) was the most important factor in hypospadias repair. Patients with less than 30 degrees curvature can have TIP repair. Those with more than 30 degrees of curvature after release of tethering skin tissues undergo STAG repair.
A new algorithm for primary hypospadias repair based on tip urethroplasty.