Pelvic Fracture Urethral Distraction Defects Research Articles

Transperineal anastomotic urethroplasty with distal transection versus proximal transection: How to predict?

Abstract Objectives To evaluate the pubourethral stump angle (PUA) to determine the site of urethral transection during transperineal anastomotic urethroplasty (TAU). Patients and methods Patients diagnosed with pelvic fracture urethral distraction defect who underwent preoperative magnetic resonance (MR) urethrography and were treated with TAU between June 2019 and December 2021 were retrospectively reviewed. According to the site of urethral transection during TAU, patients were classified into proximal and distal groups receiving TAU with proximal and distal transection, respectively. The demographic and clinical data were recorded. The PUA was measured on sagittal T2-weighted MR urethrography. The relationship between the site of urethral transection and PUA was analyzed. Results Sixty-seven patients were included. Forty-one and 26 patients were included in the proximal and distal groups, respectively. Finally, the success rates in the proximal and distal groups were 95.1% and 92.3%, respectively. The PUAs were 123.7° ± 14.6° and 86.5° ± 9.8° (p = 0.005), respectively. The curves for the 2 groups intersected between 90° and 110°. The scribing effects at 90°, 100°, and 110° in the 2 groups were compared in detail. Compared with 90° and 110°, 100° had the highest sensitivity as the demarcation line. Conclusions In the treatment of pelvic fracture urethral distraction defect, the PUA on MR urethrography is an objective and valid parameter for evaluating the site of urethral transection during TAU. A PUA >100° indicates that proximal transection should be preferentially attempted.

Retrospective analysis of urethral anastomosis with ancillary maneuvers and intraoperative biaxial defect measurements to achieve a tension free guidance system for redo PFUDD treatment

ObjectivesRedo surgery for pelvic fracture urethral distraction defects (PFUDDs) is still a challenge. the long urethral defect makes it difficult while the high tension increase the recurrence rate. Although certain ancillary maneuvers can relieve tension, there is no consensus or guidelines for the prediction/planning of the selection. In this study, we present our experience with developing an intraoperative guidance system to achieve tension-free urethral anastomosis.Patients and methodsA total of 91 recurrent PFUDD patients managed at our center between 2020 and 2022 were retrospectively analyzed. The patients underwent scar removing and urethral anastomosis. For the long defect and high-tension cases, 6 kinds of tension-relieving maneuvers were used respectively during the process of urethral anastomosis. Preoperative assessment of the urethrogram was done before surgery, while biaxial (vertical and horizontal) defect measurements were performed intraoperatively. The patients were followed-up for 12 months (8.9 ± 4.2), furthermore, recurrence and complications were analyzed.ResultsThe overall success rate was 86.81%. The mean defect in urethrogram was 2.9 ± 1.1 cm. 27 simple anastomosis was performed when the vertical plus horizontal defect was less than 2 cm with 11.11% recurrence. 24 cavernous septum splittings were performed when the horizontal defect was greater than 2 cm with 8.33% recurrence. 21 inferior pubectomies were performed when the horizontal defect was greater than 3 cm with 19.05% recurrence. 15 ancillary distal urethra manipulations (fully distal urethral mobilization, urethral suspension and corpus cavernosa folding) were performed when the vertical defect was 3 to 4 cm with 13.33 recurrence. 4 reroutings were performed when the vertical defect was greater than 4 cm with 25.00% recurrence.ConclusionsAncillary maneuvers are effective for reducing tension in redo urethral anastomosis. Measurement of divergent vertical and horizontal urethral defects could guide the selection of ancillary maneuvers. Combined tension-relieving maneuvers is recommended according to the defect direction and length to achieve a tension-free anastomosis.

MRI in Preoperative Planning for the Repair of Pelvic Fracture Urethral Distraction Defects: A New Tool for Determining Reconstructive Options

MRI in Preoperative Planning for the Repair of Pelvic Fracture Urethral Distraction Defects: A New Tool for Determining Reconstructive Options

High rising flames: a sign of complex extraperitoneal bladder rupture.

Extraperitoneal bladder rupture is the most common type of bladder injury following pelvic trauma and is seen in 80-90% of cases. Generally, the contrast extravasation seen on computed tomography (CT) cystography is confined to the perivesical space, giving a characteristic flame-shaped appearance. Occasionally contrast extravasation can extend to the scrotum, thigh or anterior abdominal wall, depending on the extent of injury. Here we report an unusual CT cystogram finding of complex extraperitoneal bladder rupture with associated pelvic fracture urethral distraction defect, showing large-volume contrast extravasation extending beyond the perivesical space to the left perinephric region resembling high rising flames.

Transperineal Urethroplasty for Urethral Distraction Defects Caused by Pelvic Fracture

Purpose: We report the outcomes of transperineal urethroplasty in patients with pelvic fracture urethral distraction defects (PFUDDs) over the past 12 years. Materials and Methods: Patients who received transperineal anastomotic repair of PFUDDs from January 2007 to December 2019 were retrospectively analyzed, specifically focusing on demographic findings, pelvic fracture type, urethral distraction defect length (based on retrograde urethrography and cystography), previous treatments, and ancillary maneuvers during surgery. Simultaneously, differences in clinical factors between successful and failed cases were also analyzed. Results: A total of 36 patients were included, with a final success rate of 83%. The mean age was 40.4 years, whereas the mean urethral distraction defect length was 31.9 mm. Most patients (69%) presented with unstable pelvic fractures. Treatment before referral included endoscopic treatment and urethroplasty in 13 (36%) and 2 cases (6%), respectively. For difficult cases, ancillary procedures, which included corporeal splitting (61.1%) and inferior pubectomy (8.3%), were performed. The postoperative average peak flow rate was 14.9 mL/s in the success group. Age and urethral defect length differed significantly between the success and failure groups. Conclusions: Over the past 12 years, transperineal urethral reconstruction demonstrated a success rate of 83% in 36 patients with PFUDD. Age and urethral defect length were identified as the two main factors affecting surgical prognosis.

Pelvic Fracture Urethral Distraction Defects in Preschool Boys: How to Recognize and Manage?

ObjectiveTo share the cases of pelvic fracture urethral distraction defect (PFUDD) in preschool boys and evaluate the transperineal anastomotic urethroplasty strategy for the treatment of these cases. Materials and MethodsBetween January 2010 and May 2021, 8 preschool boys (<6 years) with PFUDD underwent the transperineal anastomotic urethroplasty in our center were retrospectively reviewed. Etiology was traumatic pelvic fracture in all boys. The type of trauma included: fall injury in 1 and vehicle crush injury in 7. Urethroplasty was performed at least 3 months after initial trauma or the last failed intervention. One of them suffered from PFUDD associated with urethrorectal fistula received urethroplasty combined with fistula repair. A successful urethroplasty was defined as restoring the patency and continuity of urethra and no further interventions were needed. ResultsFollow-up was obtained in all the 8 preschool boys for 3-135 (median: 65) months. The average age was 4.1 years old (range 1-5). After operation, the final success rate was 100%. Neither stenosis recurrence nor urinary fistulas were reported during follow-up. Of the 8 boys, 1 developed urinary incontinence, only occurring after high-intensity exercise such as running. Potency state could not be evaluated for all boys due to the young age. One boy reported having normal morning erection after a follow-up of 135 months. ConclusionPFUDD in preschool boys is a challenge for both the urologist and parent. Our study preliminarily confirmed that the progressive anastomotic urethroplasty strategy can ensure a high success rate.

Transperineal anastomotic urethroplasty for the treatment of pelvic fracture urethral distraction defects: a progressive surgical strategy.

The aim was to reduce the difficulty of transperineal anastomotic urethroplasty for pelvic fracture urethral distraction defect (PFUDD) and make it easy to master through an effective strategy. Between January 2010 and December 2019, 1637 patients with PFUDDs were treated by transperineal anastomotic urethroplasty. The surgical strategy we used was the progressive transperineal anastomotic urethroplasty. First, after full mobilization of the distal bulbomembranous urethra, the stenotic urethra was transected directly at the proximal margin of the stenotic urethra to expose the proximal disrupted urethral end. Second, if the urethral stenosis location of some complicated cases was too deep to fully mobilize, the position of urethral transection was selected at the distal margin of the stenotic urethra. Then, the distal and proximal disrupted urethras were then trimmed and anastomosed without tension. A successful urethroplasty was defined as reestablishment of a uniform urethral caliber and no further interventions were needed. Follow-up was obtained in 1475 patients. The success rate was 92.4% (1363/1475). Among the 112 failed patients, 10 patients received endoscopic urethrotomy, 99 underwent a secondary or third anastomotic urethroplasty and 3 successfully treated with perineal skin flap urethroplasty. After final successful urethroplasty, 125 patients (8.5%) had different degrees of urinary incontinence and 15 (1.6%) developed de novo erectile dysfunction (1.6%). The progressive transperineal anastomotic urethroplasty strategy was effective for treating PFUDD cases, improving surgical efficacy and reducing complications. It may contribute to standardizing the transperineal anastomotic urethroplasty and making it easy to master.

P1132 - Assessing the value of a novel MRI protocol in patients undergoing posterior urethroplasty for Pelvic Fracture Urethral Distraction Defect (PFUDD)

P1132 - Assessing the value of a novel MRI protocol in patients undergoing posterior urethroplasty for Pelvic Fracture Urethral Distraction Defect (PFUDD)

Role of tadalafil in enhancing visualization of posterior urethra prior to combined voiding cystourethrogram and retrograde urethrogram: a retrospective analysis.

To show utility of tadalafil in enhancing visualization of posterior urethra in patients with urethral stricture. We retrospectively reviewed the records of adults male who failed to delineate the posterior urethra while undergoing combined voiding cystourethrogram and retrograde urethrogram (VCUG and RUG), as a part of preoperative assessment of stricture length and location before urethral reconstruction. The study was repeated 24 h later after a single dose of tadalafil 20 mg was administrated 2 h before the procedure (Tadalafil group). A control group who did not receive any medication was used for comparison (control group). This study was carried out in between March 2016 and August 2019. Thirty patients were included in the tadalafil group and equal number of patients was used as control group for comparison. The etiologies of strictures were pelvic fracture urethral distraction defect (39 patients), bulbar stricture with complete obliteration (15 patients) and post catheterization (6 patients). Success rate of opening bladder outlet on initiation of voiding was 90% in tadalafil group and 40% in the control group (P = 0.0004). None of the men reported any serious adverse events after oral administration of the drug. Almost all AEs were mild and well-tolerated. Tadalafil effectively relaxes the bladder neck and the posterior urethra prior to combined VCUG and RUG in urethral stricture patients. Tadalafil was safe with no serious adverse effects when administered prior to performing the test. This prevents the patients from undergoing further invasive or expensive diagnostic techniques, moreover, tadalafil assisted in preoperative surgical preparation and patient's counseling.

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.

Transperineal anastomotic urethroplasty for pelvic fracture urethral distraction defects: The outcomes of surgical management.

Currently, transperineal anastomotic urethroplasty approach is the reference standard in the surgical reconstruction of pelvic fracture urethral distraction defects. The approach is suitable for all but the most complex cases which might require abdominoperineal approach. We reviewed our recent experience with transperineal anastomotic urethroplasty with respect to success rate and complications. This was a retrospective descriptive study carried out at Jos University Teaching Hospital from March 2015 to March 2018. The case notes of male patients who had transperineal anastomotic urethroplasty for pelvic fracture urethral distraction defects within the study period were retrieved. Patients' demographics, cause and nature of pelvic fracture urethral distraction defects, the success rate, and complications were collected and subjected to statistical analysis using SPSS® version 22. Sixteen men with mean age of 29.6 ± 7.8 years had transperineal anastomotic urethroplasty for pelvic fracture urethral distraction defect (PFUDD) during the study period. The mean defect gap length was 4.5 cm (range, 2-7 cm). Out of the 16 patients, 6 (37.5%) had simple transperineal urethroplasty, while 10 (62.5%) underwent a more extensive transperineal urethroplasty. Four patients (25%) had inferior pubectomy. A total of 7 (43.8%) patients had erectile dysfunction (ED) before and after the urethroplasty. Five (31.3%) patients had ED before the urethroplasty 2 (12.5%) patients developed ED after the surgery. After mean follow-up duration of 2 years (range, 1-4 years), 12 (75%) patients had satisfactory urinary stream. The mean Qmax for the 16 patients was 16 ml/s (range, 0-35 ml/s). The 12 (75%) patients that had no complaints of LUTS, had Qmax ≥ 15 ml/s at mean follow-up duration of 2 years. Transperineal anastomotic urethroplasty for PFUDD is considered suitable technique for treatment of PFUDD with good surgical outcome.

Let-7i-5p Regulation of Cell Morphology and Migration Through Distinct Signaling Pathways in Normal and Pathogenic Urethral Fibroblasts.

microRNAs regulate subcellular functions through distinct molecular mechanisms. In this study, we used normal and pathogenic fibroblasts in pelvic fracture urethral distraction defects (PFUDD) patients. PFUDD is a common disease that could severely affect patients’ life quality, yet little is known about the molecular mechanism associated with pathogenic fibrosis in PFUDD. Our data showed that let-7i-5p performs a multi-functional role in distinct signaling transduction pathways involved in cell morphology and cell migration in both normal and pathogenic fibroblasts. By analyzing the molecular mechanism associated with its functions, we found that let-7i-5p regulates through its direct target genes involved in collagen metabolism, cell proliferation and differentiation, TGF-beta signaling, DNA repair and ubiquitination, gene silencing and oxygen homeostasis. We conclude that let-7i-5p plays an essential role in regulating cell shape and tissue elasticity, cell migration, cell morphology and cytoskeleton, and could serve as a potential target for clinical treatment of urethral stricture patients.

3D printing of pelvic fracture urethral injuries-fusion of technology and urethroplasty.

Urethral injury occurs in 10% of patients who suffer from pelvic fractures. Urethroplasty is performed after an interval of 3 months to stabilize the perineal hematoma. It has been reported that the rate limiting step in anastomotic urethroplasty is finding the posterior urethra. Even for the most experienced surgeons, at times, this step can be challenging. The aim of the present study was to describe a novel technique for understanding the three-dimensional (3D) anatomy which would also help in surgical planning and making urethroplasty easy, a step ahead of conventional imaging. Ours is a tertiary referral center with an experience of >1307 cases of pelvic fracture urethral distraction defects. This study was conducted between January 2018 and July 2018. Ethics approval was obtained. No patients incurred any cost for the study. A computerized tomography scan was performed with the bladder filled with contrast saline, and the same solution was injected into the anterior urethra, with a gauze piece tied around the glans. 3D images were then reconstructed, and data were transferred to the 3D Ultimaker™ printer. 3D models were printed to mimic the anatomy of pelvic fracture urethral distraction. A total of 10 models were created. The models, along with conventional urethrogram, were shown to fellows and observers. Visually, they gave a score of 4.3/5. In correlation with urethroplasty, understanding the anatomy of the posterior urethra was also important. 3D printing can be applied to pelvic fracture urethral injury to understand the anatomy of the posterior urethra, its distance from the rectum, length of gap, relation to the posterior urethra, direction of displacement of the urethra, and if pubectomy is required or not.

Surgical treatment of pelvic fracture urethral distraction defects in boys: which approach is suitable?

Pelvic fracture urethral distraction defects (PFUDDs) are relatively infrequent in boys, and treatment for PFUDDs presents one of the most difficult problems in urological practice. Anastomotic urethroplasty is considered an ideal surgical procedure for PFUDDs in boys. However, various surgical approaches for anastomotic urethroplasty have been proposed, including a simple transperineal approach, a transperineal intercorporal septal separation approach, a transperineal inferior pubic approach, and a combined transpubic-perineal approach. This study aims to determine which surgical approach is best for PFUDDs in boys. We retrospectively identified 22 boys with PFUDDs aged 2–14 years who underwent anastomotic urethroplasty via different approaches between January 2008 and December 2017. Follow-up was performed in all the 22 patients for 6–123 (mean: 52.0) months. Finally, 20 of the 22 boys (90.9%) were successfully treated, including 1 of 2 patients treated with a simple transperineal approach, 3 of 3 with a transperineal approach with intercorporal septal separation, 14 of 15 with a transperineal inferior pubic approach, and 2 of 2 with a combined transpubic-perineal approach. Two patients had failed outcomes after the operation, and stenosis recurred. Based on the outcome of the 22 patients, we can draw a preliminary conclusion that most boys (20/22) can be treated with a transperineal inferior pubic approach or simpler procedures without the need of completely removing or incising the pubis. The combined transpubic-perineal approach can be used in cases of extremely long urethral distract defects.

PT021 - Gastro-urethroplasty for salvage of lengthy complex pelvic fracture urethral distraction defect: Long-term follow up

PT021 - Gastro-urethroplasty for salvage of lengthy complex pelvic fracture urethral distraction defect: Long-term follow up

397 - The reasonable procedure for pelvic fracture urethral distraction defects: Transperineal end-to-end anastomosis

397 - The reasonable procedure for pelvic fracture urethral distraction defects: Transperineal end-to-end anastomosis

570 - Urethral reconstruction for pelvic fracture urethral distraction defects in boys: A 10-year experience

570 - Urethral reconstruction for pelvic fracture urethral distraction defects in boys: A 10-year experience

Controversies in the management of pelvic fracture urethral distraction defects.

Pelvic fracture associated urethral injury (PFUI) is a sequel of blunt pelvic trauma. The published rate of urethral injury varies from 5-25% in different series. Management includes options from primary realignment to delayed anastomotic urethroplasty. Anastomotic urethroplasty include an elaborated progressive perineal approach and combined transpubic approach. Though the treatment and approach is well accepted across the globe, controversies do exist. Through this section we would debate the literature regarding some controversial issues in management of PFUI. The aim of this article was to evaluate and elucidate upon the controversies that surround the PFUI repair in this era.The following controversial and pertinent issues with respect to the repair of such injuries were reviewed: Primary realignment versus delayed repair of PFUI, Necessity of inferior pubectomy, Predictability of inferior wedge pubectomy, Spatulation of distal bulbar and proximal urethral ends, Nomenclature of bulbar urethra. This study and evaluation comes from a tertiary high-volume center of reconstructive urology. Apart from our own center's experience the literature was reviewed for evidence synthesis and framing an opinion. Each of the above principles and surgical steps regarding management of pelvic fracture urethral injury was dealt with sequentially and evidence based literature reviewed. Only data from high volume urethroplasty centers and peer reviewed articles which made significant contribution were considered. The data was analyzed and conclusion drawn. On evidence collection there was sparse and scattered evidence in favour of early realignment even after technical advancement. Delayed anastomotic urethroplasty with progressive perineal approach is recommended. Inferior wedge pubectomy cannot be predicted based upon current conventional imaging.The injury and urethral distraction has a wide spectrum and with the fallibility of imaging, inferior pubectomy is a necessary steps under relevant settings to gain access to the posterior urethra. There are multitude of ways to spatulate urethra at either end although literature does not provide a superior way. Spatulation of distal urethra dorsally and leaving the proximal sphincter active urethra unspatulated is be the best scientifically. There is a need to reclassify the bulbar urethra to the penoscrotal junction to avoid under mobilization of bulbar urethra during the repair. There is no conclusive article addressing the controversial issues highlighted in this article. Adequate mobilization of bulbar urethra should be done till penoscrotal junction. Inferior pubectomy as a technique cannot be predicted and its utility cannot be underestimated. The spatulation of urethra can be done in multiple ways. Current anatomical definition of bulbar urethra is erroneous to imply urethra only in the bulb but with respect to surgery it should be extended till the penoscrotal junction.

Analysis of anastomotic urethroplasty for pelvic fracture urethral distraction defect: Decadal experience from a high-volume tertiary care center.

Context:Pelvic fracture urethral distraction defect (PFUDD) may be challenging for the treating urologist. Anastomotic urethroplasty is the established surgical procedure for the treatment of PFUDD. Few studies in literature focus purely on PFUDD, and majority of the studies include anterior urethral stricture as well. The period of these studies is relatively short. We conducted a retrospective analysis of patients who underwent primary or redo anastomotic urethroplasty for PFUDD over a period of 12 years at a tertiary care center in northern India.Aims:The aim is to study anastomotic urethroplasty for pelvic fracture urethral distraction defect with regard to long-term success rate and complications.Settings and Design:This was a retrospective study. Subjects andMethods:This retrospective study was conducted in the Department of Urology, King George's Medical University, Lucknow, India, from August 2004 to July 2016. All patients who underwent progressive perineal anastomotic repair of PFUDD were included in this study. Demographic findings, type of pelvic fracture, length of distraction defect as per retrograde urethrography (RUG) and micturating cystourethrography, any history of erectile dysfunction in the preoperative or postoperative phase, and urinary incontinence in postoperative phase were analyzed. Decision regarding catheter removal was taken after pericatheter RUG at 4 weeks. Follow-up was done at 3 and 6 months in postoperative period.Results:A total of 226 anastomotic repairs were done in 221 patients. Of the 221 patients, 51 (23%) were redo urethroplasty. The mean age of patients was 27.6 years. The mean length of distraction defect was 2.7 cm. The mean duration of hospital stay was 6 days. Primary urethroplasty was successful in 163 (93.14%) of 175 patients and redo urethroplasty in 44 (86.27%) of 51 patients. Out of 165 patients, 18 (10.9%) patients reported occasional incontinence while 6 (3.63%) patients reported mild incontinence.Conclusions:Anastomotic urethroplasty is the definitive procedure for PFUDD. Our success rate for primary deferred anastomotic urethroplasty is 93.14% and for redo anastomotic urethroplasty is 86.27%.

V27 - Pedicled preputial tube urethroplasty for bulbar urethral necrosis after failed anastomotic urethroplasty for pelvic fracture urethral distraction defects

V27 - Pedicled preputial tube urethroplasty for bulbar urethral necrosis after failed anastomotic urethroplasty for pelvic fracture urethral distraction defects