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  • https://doi.org/10.1089/vid.2023.0013Copy DOI Icon

Modified Martius Flap Urethroplasty: A New Technique

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Abstract

Introduction: Female urethral strictures are rare, and there is no consensus on proper surgical treatment. The literature is primarily limited to case reports and small case series. Surgical treatment has frequently been extrapolated from male urethroplasty techniques. However, female urethroplasty differs significantly from male urethroplasty because it is performed directly across the urinary sphincter. 1 We describe our rationale and technique for female ventral urethroplasty utilizing a modified Martius flap. Materials and Methods: Two female patients, aged 46 and 58 years, with chronic urethral strictures underwent a ventral modified Martius flap urethroplasty. After guidewire and open-ended ureteral stent placement across the stricture, an inverted U-flap incision was made from the distal urethra to the bladder neck. A full thickness incision into the urethral lumen was made, extending past the bladder neck, and sounded with a 30F urethral sound. An ∼5 × 2 cm portion of nonhair bearing inner labia tissue was harvested and mobilized on the anterior pedicle of a Martius flap. This was then tunneled under the vaginal wall and rotated over the area of the urethral defect. The flap was sutured in place with two 4-0 polyglactin running suture lines, covering the entire gap in the urethra with good mucosal apposition. The remaining fatty tissue of the Martius flap was rotated over the suture lines, adding an extra layer to the repair. The inverted U flap incision was closed over the repair and the skin edges of the Martius flap harvest site were closed in two layers with a deep 2-0 polyglactin layer and a superficial 4-0 poliglecaprone subcuticular suture, resulting in a cosmetic closure. Results: Postoperative voiding cystourethrogram revealed an open bladder neck and no recurrent stricture for both patients. Average Uroflow peak flow was 18 mL/s. The patients had no complaints of stress incontinence (SUI) and a negative cough leak test at 1 month follow-up. At 6 months follow-up, both patients continued to deny any SUI and had no obstructive voiding complaints with minimal post-void residuals. Conclusions: Our technique using a ventral approach to urethroplasty in women with a Martius flap is effective in the management of female urethral stricture disease. This approach offers lower risk of damage to the sphincter, avoids possible clitoral nerve injury, allows for better maintenance of urethral support, and is an approach familiar to most female pelvic medicine and reconstructive surgeons. Music utilized in video obtained royalty-free from (www.bensound.com). No competing financial interests exist. The authors have received and archived patient consent for video recording and publication in advance of video recording procedure. Runtime of video: 6 mins 33 mins This project was presented at the following academic conferences: Arizona Urological Society, August 1, 2021; Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction (SUFU), February 25, 2022; American Urological Association (AUA) General Meeting, May 14, 2022 ( https://doi.org/10.1097/JU.0000000000002586.08 ).

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