Comparison of Dartos flap and spongioplasty in Snodgrass urethroplasty in distal penile hypospadias

BackgroundHypospadias surgery has been continuously evolving, although there is no single technique which can be said to be perfect and suitable for all types of hypospadias. Tubularized incised plate (TIP) urethroplasty (Snodgrass procedure) is presently the most common surgical procedure performed for distal penile hypospadias (DPH). The aim of this study was to compare the outcome of TIP urethroplasty using Dartos flap (DF) and spongioplasty as second layer in DPH.MethodsA total of 30 patients of DPH were repaired using TIP urethroplasty with DF or spongioplasty as second layer from January 2017 to June 2018. Out of 30 patients, TIP with DF was done in 15 patients (group A) and TIP with spongioplasty was done in the remaining 15 patients (group B). Preoperative mean age and weight were comparable in both groups. Postoperative complications, namely, postoperative edema, residual chordee, urethrocutaneous fistula (UCF), meatal stenosis and final cosmesis, were recorded.ResultsIn both groups, complications included postoperative edema (Gp A-1Gp B-1), residual chordee (Gp A-1, Gp B-1), UCF (Gp A-3, Gp B-4), meatal stenosis (Gp A-1, Gp B-5) and poor cosmesis (Gp A-3, Gp B-4). Wound infection was managed with appropriate antibiotics, and meatal stenosis responded to calibration in five patients.Although it seems that DF has a better outcome clinically, the difference between the two techniques was statistically not significant.ConclusionDF as an additional cover to TIP is associated with an acceptable complication and has good cosmesis compared with spongioplasty; however, the difference is not statistically significant.

Use of pedicled dartos flap wrap around technique in elaborarted perineal repair of complex pelvic fracture urethral distraction defect

Objectives: To describe the use of a pedicled dartos flap between the pubic bone and bulbar urethra after elaborate perineal urethroplasty in complex pelvic fracture urethral distraction defect. This is to prevent the risk of entrapment of the anastomotic area within a fibrous scar and hence prevent the risk of urethral stricture recurrence. Our objective is also to theorise the entity of bulbar urethral entrapment to describe the trapping of the bulbar urethra by fibrosis after extensive bone resection in complex cases of pelvic fracture urethral distraction defect. Methods: Ten patients with complex pelvic fracture urethral distraction defect underwent perineal urethroplasty at our institution from 2017 to 2019. Urethroplasty was done using the elaborated perineal approach in the standard fashion. Pedicled fibrofatty tissue along with dartos from the scrotum was used to separate the site of urethral anastomosis from the bare pubic bone and fill the dead space. Results: All patients are asymptomatic with no stricture recurrence in follow-up. Conclusions: Vascularised pedicle flap should become an important tenant in the elaborated perineal repair of complex pelvic fracture urethral distraction defect. It provides an ideal option in this scenario by decreasing the risk of urethral stricture recurrence without adding morbidity and minimum extra operative time. Level of evidence: Not applicable.

Using prepucial mucous to cover neourethra in TIP urethroplasty: 4 years experience in a tertiary paediatric hospital of Bangladesh

Background. Hypospadias has a wide spectrum of penile abnormality requiring surgical correction. Most of the cases are of anterior variety and the surgical technique depends on constructing a neo urethra. Snodgrass or Tubularized Incised Plate (TIP) urethroplasty is one of the most popular techniques of urethroplasty which depends on the existing healthy, adequate and intact urethral plate. Different tissues have been described to cover the neourethra as second layer in literature. In this study we modified the TIP urethroplasty by covering the neourethra with 2 layers of pedicled prepucial mucosa or Dartos flap. Objective. To see the outcome of modified Snodgrass or TIP urethroplasty in anterior mid and proximal penile hypospadias. Materials and method. Total 88 patients were operated by modified Snodgrass technique or modified TIP urethroplasty from January 2012 to July 2016. Coronal, subcoronal, distal penile, mid penile and proximal penile hypospadias were included in the study. Every patient underwent modified TIP urethroplasty and outcomes were assessed. Results. The mean age of the patients were 28.34±14.98 months, ranges from 6.5 to 65 months. 9 (10.2%) patients of our series develop urethrocutaneous fistula, 5 (5.68%) patients develop meatal stenosis and 1 (1.1%) patient developed neourethral stricture. Conclusion. TIP urethroplasty is a versatile method to correct penile hypospadias. Covering of the neourethra with prepucial mucosa secure the neourethral anastomosis. The author declares that there is no conflict of interest. Key words: Hypospadias, TIP urethroplasty, Prepucial mucosa.

Outcome of urethrocutaneous fistula repair after hypospadias surgery

Background: Urethrocutaneous fistula is the most prevalent complication after urethroplasty. Many methods have been developed for correction, and the best technique is determined based on the size, location, and number of fistulas, as well as the status of the surrounding skin. Objective: To compare the outcome of local dartos flap and tunnelled tunica vaginalis coverage in cases of repair of urethrocutaneous fistula. Materials and Methods: In the period of 2015-2018, 51 patients with 51 fistulas with an average age of 81.3 months (range 21-156 months) were classified into coronal-19, distal penile-11, mid penile-14, proximal penile-5 and penoscrotal-2. Thirty six patients were repaired with local dartos flap coverage and 15 patients were repaired with tunnelled tunica vaginalis coverage. Results: The repair was successful in all patients of tunica vaginalis coverage but 7 patients of dartos flap coverage developed recurrent fistulas (p value 0.066). There was no patient of scrotal complications. There were no statistically significant differences regarding age (p=0.83), location of fistula (p=0.40), size of fistula (p=0.29). Conclusions: Though the result of this study with such a small sample was not statistically significant, tunica vaginalis coverage seems to be better than dartos flap coverage in preventing recurrence. Bang Med J (Khulna) 2019; 52 : 3-6

Spongioplasty with Dartos Flap Coverage in the Snodgrass Technique of Hypospadias Repair

Objective: The aim of the study is to evaluate the role of spongiosal tissue with dartos flap coverage for preventing Urethrocutaneous Fistula (UCF) formation in the Snodgrass technique. Materials and Methods: It is a prospective study, performed on 35 patients of mid penile and distal hypospadias aged 15 months to 144 months who underwent urethroplasty in the Snodgrass technique using spongiosal tissue and dartos flap for neourethral coverage. Results: Among 35 patients, Age ranged from 15 months to 144 months (mean 85.94 months). Chordee was corrected by penile degloving alone in 11 patients, partial mobilization of urethral plate with spongiosum in 20 patients and 4 patients required dorsal plication. Glans groove was deep in 19 patients, shallow in 13 patients and no groove noticed in 3 patients. Sixteen patients had narrow urethral plate (<8mm) and 19 patients had adequate urethral plate (>8mm). Urethrocutaneous Fistula (UCF) was encountered in five patients (14.28%), meatal stenosis in two patients (5.71%), and partial glanular dehiscence in one patient. Conclusions: Approximation of spongiosal tissue along with dartos flap as the intermediate layer for neourethral coverage reduces fistula formation. J Bangladesh Coll Phys Surg 2020; 38(2): 64-67