Evaluation of Neuromuscular Morphometry of the Vaginal Wall Using Protein Gene Product 9.5 (Pgp 9.5) and Smooth Muscle α-Actin (Sma) in Patients with Posterior Vaginal Wall Prolapse.

Background and Objectives: This study aims to compare the neuromuscular structure of the vagina in women with posterior vaginal wall prolapse with the neuromuscular structure of the vagina in women without prolapse, to determine the difference, and to demonstrate the role of neuromuscular structure in the physiopathology of prolapse. Materials and Methods: In this prospective study, women aged between 40 and 75 years who had not undergone any vaginal surgery and had not undergone any abdominal prolapse surgery were included. Thirty-one women diagnosed with rectocele on examination were included in the study group. Thirty-one patients who underwent vaginal intervention and hysterectomy for reasons other than rectocele (colposcopy, conization, etc.) without anterior or posterior wall prolapse were included in the control group. Biopsy material was obtained from the epithelium of the posterior wall of the vagina, including the fascia that fits the Ap point. Immunohistochemical staining with Protein Gene Product 9.5 and smooth muscle α-actin was performed in the pathology laboratory. The epithelial thickness measurement and smooth muscle density parameters obtained with these immunohistochemical stainings were compared between the two groups. The collected data were analyzed using the SPSS 23 package program. p values less than 0.05 were considered statistically significant. Results: In the control group, muscle thickness and the number of nerves per mm2 of fascia were statistically significantly higher than in the study group (p < 0.05). Conclusions: We found that smooth muscle tissue and the number of nerves per mm2 of fascia were decreased in posterior vaginal wall prolapse compared to the general population. Based on the correlation coefficients, age was the parameter that most affected the degree of prolapse, followed by parity, number of live births, and number of vaginal deliveries.

Spontaneous transvaginal intestinal evisceration in case of long-standing uterine prolapse.

BACKGROUND: Transvaginal intestinal evisceration is an extremely rare surgical emergency with potentially fatal consequences. Only a few more than 100 cases with this pathology have been described in the literature. Aetiology is also unclear and multifactoral. CASE PRESENTATION: We report the case of an 80-year-old female who presented with sudden severe abdominal pain and spontaneous small bowel evisceration through the vagina along with associated high-grade uterine prolapse. The loops and their mesentery appeared edematous, thickened and dusky, but without apparent necrosis. An urgent laparotomy was performed with subsequent reduction of the prolapsed small bowel into the abdomen, hysterectomy, partial resection of the vagina and vaginal closure. Additional cholecystectomy was necessary because of the visible pathologic changes of the gallbladder. The postoperative period was uneventful. The unique feature of our case is that there was no trigger factor (trauma, constipation or a coughing episode that would increase the intra-abdominal pressure), provoking the vaginal rupture and intestinal evisceration through it in the context of pelvic floor weakness. CONCLUSIONS: Early detection and surgical management are crucial for preventing bowel ischemia and abdominal sepsis. If the eviscerated intestine is ischaemic and non-viable, this requires resection and anastomosis. The approach should be individualized and performed by a multidisciplinary team.

Dynamic magnetic resonance imaging evaluation before and after operation for pelvic organ prolapse.

PURPOSE: This study aimed to explore the value of dynamic magnetic resonance imaging (MRI) before and after operation for pelvic organ prolapse (POP). METHODS: Twenty-nine patients with POP (POP group) before and one month after surgery and 12 healthy women (control group) underwent static and dynamic MRI at rest and during straining (Valsalva maneuver). The preoperative MRI images of the POP and control groups were analyzed, and various measurements were recorded. Differences in measurements were compared between the POP and control groups; similarly, changes in measurements before and after operation were compared. RESULTS: In the POP group, MRI detected 29 anterior vaginal prolapses, 27 uterine prolapses, 1 rectoceles, and 14 pouch of Douglas hernias. In addition, 27 levator ani muscle defect and 15 pubocervical fascial defect cases were observed. The bladder-pubococcygeal line (B-PCL), uterus-pubococcygeal line (U-PCL), Douglas pouch-pubococcygeal line, the length of the hiatus, the descent of the levator plate, levator hiatus size, levator plate angle, iliococcygeus angle, and urethral inclination angle (UA) were larger in the POP group than in the control group. The pelvic organs' positions returned to normal postoperatively in 9 of 21 cases. The B-PCL, U-PCL, and UA were smaller post-surgery than pre-surgery. CONCLUSIONS: Static and dynamic MRI can comprehensively evaluate morphological and functional changes of the pelvic floor postoperatively.

Comparison of treatment outcomes for native tissue repair and sacrocolpopexy as apical suspension procedures at the time of hysterectomy for uterine prolapse.

Concomitant apical suspension should be performed at the time of hysterectomy for uterine prolapse to reduce the risk of recurrent prolapse. Native tissue repair (NTR) and sacrocolpopexy (SCP) are commonly used apical suspension procedures; however, it remains unclear which one is preferred. This study aimed to compare the treatment outcomes of NTR and SCP in terms of surgical failure, complication and reoperation rates. Surgical failure was defined as the presence of vaginal bulge symptoms, any prolapse beyond the hymen, or retreatment for prolapse. This retrospective cohort study included 523 patients who had undergone NTR (n = 272) or SCP (n = 251) along with hysterectomy for uterine prolapse and who had at least 4-month follow-up visits. During the median 3-year follow-up period, the surgical failure rate was higher in the NTR group (21.3% vs 6.4%, P < 0.01), with a low rate of retreatment in both groups. Overall complication rates were similar, but complications requiring surgical correction under anesthesia were more common in the SCP group (7.2% vs 0.4%, P < 0.01). As a result, the total reoperation rate was significantly higher in the SCP group (8.0% vs 2.6%, P = 0.02). Taken together, NTR may be a preferred option for apical suspension when hysterectomy is performed for uterine prolapse.

Uterus-Sparing Surgery: Outcomes of Transvaginal Uterosacral Ligament Hysteropexy.

STUDY OBJECTIVE: Recently, there has been a paradigm shift toward uterine conservation during the surgical management of pelvic organ prolapse (POP), specifically uterine prolapse. There are few reports on transvaginal uterosacral ligament hysteropexy (TULH). This study aimed to describe our surgical technique and outcomes. DESIGN: Retrospective review and description of surgical technique. Anatomic outcome has been reported using the POP quantification system. Complications were segregated. A comparison of parametric continuous variables was performed using paired t test. Categoric variables were evaluated using the Pearson χ2 test and the Fisher exact test. A p-value <.05 was considered significant. SETTING: Teaching hospital. PATIENTS: Forty patients who underwent TULH from 2009 to 2017. INTERVENTIONS: TULH. MEASUREMENTS AND MAIN RESULTS: A total of 40 patients met the inclusion criteria. Of these, 56.1% had preoperative stage 3 prolapse. The median operative time was 116 minutes. The mean estimated blood loss was 158.5 mL. Transient ureteral obstruction occurred in 2 patients. The mean follow-up time was 17.2 months, and all patients had significant improvement of prolapse (p <.001). There was also an improvement in urinary incontinence and bladder storage symptoms (p <.001). None of the patients were reoperated on for recurrent POP. CONCLUSION: TULH is an effective uterus-preserving surgical alternative for the treatment of uterovaginal prolapse and provides good apical support. It is also associated with a low short-term recurrence and incidence of reoperation. TULH is a viable option for suitable patients with uterovaginal prolapse who desire uterine conservation.

Role of acoustic radiation force-based elasticity imaging in endometrium pathologies.

BACKROUND: Ultrasonography is difficult to distinguish between endometrial pathologies and often requires curettage. ARFI (Acoustic Radiation Force-Based Elasticity Imaging) is a new ultrasonography elastography method. Using ARFI, it is possible to obtain information about the likelihood of the tissue benign or malignant. AIM: The aim of this study is to evaluate the contribution of ARFI to differentiate endometrial pathologies in hysterectomy specimens. SUBJECTS AND METHODS: Our study was prospectively, January-May 2017, performed in randomly 45 cases of 41-91 years of age (mean 58.3 years) who have decided to have hysterectomy. Hysterectomy was performed for uterine prolapse and endometrial hyperplasia in elderly patients and menorrhagia in young patients. Pathology results were compared with ARFI values and endometrial thickness. ANNOVA test was used for the comparison of ARFI values. RESULTS: Pathology revealed 14 cases of endometrial atrophy, 11 cases of proliferative phase, 10 cases of polyp, 6 cases of endometrial hyperplasia, and 4 cases of endometrium cancer. There is a statistically significant difference between mean ARFI values of endometrium, subendometrium, and myometrium of the groups (P < 0.05). There was a statistically significant difference between the mean endometrial thickness of the groups (P < 0.05). CONCLUSION: Endometrium ARFI contributes to the differential diagnosis of endometrial pathologies. Subendometrial and myometrial ARFI values decrease in polyps and increase in hyperplasia. Our study shows that the addition of subendometrium ARFI to gray-scale sonography before deciding on invasive procedures in endometrial pathologies may improve diagnostic accuracy. We concluded that further in vivo studies will establish the usefulness of this technique for preoperative diagnostic measures.

Risk of de novo posterior vaginal prolapse after anterior laparoscopic sacrocolpopexy: Evaluation at one year.

INTRODUCTION AND HYPOTHESIS: Treatment of anterior vaginal and/or apical prolapse by sacrocolpopexy is most often performed by systematic placement of two non-resorbable meshes, anterior and posterior, whether or not there is an associated posterior vaginal prolapse. We believe that isolated correction of an anterior vaginal and/or apical prolapse in the absence of posterior vaginal prolapse is not associated with a higher rate of de novo posterior vaginal prolapse. METHOD: A prospective, observational, monocenter study performed in the Gynecology unit of the Conception UHC in Marseille from May 2011 to October 2014. Patients over 18 years of age exhibiting an anterior vaginal and/or apical prolapse of stage ≥ 2 of the POP-Q classification resulting in functional impairment with alteration of the quality of life, without an associated posterior vaginal prolapse were included and underwent a laparoscopic anterior sacrocolpopexy (ASP). They were seen again in consultation one year from the intervention. Validated quality of life questionnaires were completed pre- and one year postoperatively. RESULTS: 50 patients were included. The rate of de novo posterior vaginal prolapse was 8/50 (16 %). At one year, there was a significant improvement in terms of the SPDI-20 and SPIQ-7 (p < 0.0001) questionnaire, without significant improvement in the quality of sexual function (PISQ-12 questionnaire) (p = 0.073). CONCLUSION: The risk of de novo posterior vaginal prolapse at one year is low when an ASP is carried out.

No mesh versus mesh in the treatment of anterior vaginal wall prolapse: prospective, randomised, controlled trial, long-term follow-up.

OBJECTIVES: To compare the efficacy and safety of anterior colporrhaphy (AC) versus transvaginal polypropylene mesh (PM) for the treatment of anterior vaginal wall prolapse (AVWP) at long-term follow-up. METHODS: Prospective and randomized controlled trial, 100 women with AVWP stage ≥ II assessed by the Pelvic Organ Prolapse Quantification System (POP-Q) underwent AC (control group) or PM insertion (mesh group). At baseline and at 60-month follow-up, safety profile, anatomical outcomes by POP-Q measurements and staging, subjective outcomes and quality of life (QoL) impact by ICIQ (SF and VV) and OAB-V8 questionnaires were assessed RESULTS: 76 women completed the study, 43 in Control versus 33 in Mesh group. Significant improvements were observed in all variables between the 2 times in each group (p < 0.0001), without differences between groups. Objective cure (POP-Q Ba ≤ - 2 and Ba ≤ - 1) occurred in 22 and 36 (51.2 and 83.7%) versus 23 and 31 (69.7 and 93.9%), p = 0.10 and 0.29; and subjective cure (VSS, no vaginal symptom) in 21 (48.8%) versus 17 (51.5%), p = 0.82, respectively, at 60-month follow-up. When adjusted for the other variables, Mesh group showed worse QoL impact due to subjective vaginal symptoms (odds ratio 3.99, CI 95% 1.13; 14.13). AVW asymptomatic mesh exposure occurred in 2 patients (6.06%) in the Mesh group. CONCLUSIONS: AC and PM provided good overall objective and subjective outcomes for a minimum 60-month follow-up. Vaginal and urinary symptoms improved post-operatively in both groups. Mesh group experienced four times more negative impact on QoL compared to Control at 60-month follow-up.

A Hypothesis Generating the Mechanical Systems Underlying Posterior Vaginal Prolapse Based on Observed Displacements by Dynamic Magnetic Resonance Imaging.

OBJECTIVE: The aim of this study was to analyze quantified displacements of the posterior vaginal wall (PVW) on dynamic magnetic resonance imaging (MRI), which may generate hypotheses for the detailed mechanisms that underlie the development of posterior vaginal prolapse. METHODS: Pelvic dynamic MRI scans were obtained for 12 women with normal vaginal structure (stage 0) and 62 women with 4 consecutive stages (1-4) of posterior vaginal prolapse. Structural locations (apex vagina, distal vagina, and mid-perineal body [PB]) and equidistant points along the PVW (points 4-6 were considered as midvagina) were identified, and PVW length, straight distance of PVW, levator ani parameters (levator hiatus length [LHL], levator hiatus width [LHW], levator plate angle, anorectal angle, and M line [ML]), urogenital hiatus, and prolapse diameter were measured at rest and maximal Valsalva, respectively. The displacement of these measurements was obtained. RESULTS: From stage 0 to 2, the variables LHL, LHW, levator plate angle, anorectal angle, and ML increased gradually, but midvagina, distal vagina, and mid-PB were the opposite. From stage 2 to 3, apex vagina, midvagina, distal vaginal, mid-PB, LHL, LHW, and ML raised rapidly and peaked at stage 3, then declined at stage 4. In addition, the correlation coefficients between each measurement from stage 2 to 3 were statistically higher than those from stage 0 to 2. CONCLUSIONS: Quantified displacements of the PVW and its supporting structure were shown on dynamic MRI, and the mechanical mechanisms were hypothesized regarding the interaction between pressure and the support force contributing to the deformation of the PVW and the supporting structures.

Validation of noninvasive focal depth measurements to determine epithelial thickness of the vaginal wall.

OBJECTIVE: This study investigates whether noninvasive focal depth (FD) measurements correlate with vaginal wall epithelial thickness (ET). If FD accurately reflects ET of the vaginal wall, this would allow noninvasive longitudinal assessment of (newly developed) treatment modalities aiming to increase ET, without the need for invasive biopsies. METHODS: Fourteen women, median age 62 years (inter quartile ranges: 57-65), undergoing vaginal prolapse surgery because of anterior and/or posterior compartment pelvic organ prolapse were included. We used the CytoCam, a handheld video microscope based on incident dark field imaging, and performed FD measurements of the vaginal wall before surgery. Histology was performed on tissue that was removed during the surgical procedure, and ET was measured in stained sections. We compared ET with FD interindividually, and determined the expected linear correlation and agreement between the two measurements. RESULTS: Seventeen ET measurements (mean 125 µm ±â€Š38.7, range 48-181 µm) were compared with 17 FD measurements (mean 128 µm ±â€Š34.3, range 68-182 µm). The lineair correlation between the two measurements was strong (r = 0.902, P < 0.01). Bland-Altman analysis demonstrated a mean difference of 13.5 µm when comparing ET to FD. CONCLUSIONS: The results demonstrate good agreement between ET and FD measurements. We consider the mean difference demonstrated with Bland-Altman analysis acceptable for these measurements. This suggests that FD accurately reflects ET, which further supports the use of FD to measure ET of the vaginal wall. For a complete assessment of the vaginal wall, FD measurements are preferably combined with the assessment of vaginal angioarchitecture.

Perioperative changes in superficial pelvic organ prolapse quantification system measurements after prolapse surgery.

OBJECTIVES: To evaluate the values of perineal body (PB) and genital hiatus (GH) before and after posterior repair. We also evaluated the introital surface area (ISA)-a sum of transverse and longitudinal GH measurements. METHODS: This secondary analysis of a prospective case series included 94 women undergoing posterior vaginal prolapse surgery at a consultant urogynecology clinic between October 3, 2011, and October 2, 2014. Patients were examined in clinic using the pelvic organ prolapse quantification system with Valsalva maneuver, and in theatre pre- and postoperatively with traction. RESULTS: Immediately postoperatively, a statistically significant change (all P<0.001) was noted for GH (mean difference -0.59 cm), PB (-0.56 cm), and ISA (-0.87 cm) compared with preoperative measurement. This effect was maintained for GH (-0.42 cm) and PB (-0.40 cm) at 2 months' follow-up (both P<0.001), and for PB alone (-0.43 cm; P=0.04) at 8 months. ISA had a moderate correlation with GH (r=0.55). CONCLUSIONS: Posterior repair significantly improved PB length at months 2 and 8, and GH length at month 2. ISA did not correlate with prolapse stage. Changes in GH were not maintained beyond postoperative month 2.

Metastatic Acinic Cell Carcinoma to the Vagina: A First Reported Case.

This is a case of a 62-year-old woman with a remote history of acinic cell carcinoma of the parotid gland, who presented with a palpable vaginal mass, anterior vaginal wall prolapse, and stress urinary incontinence. A 2 cm firm mobile mass on the anterior vaginal wall was found on clinical examination. A computed tomographic scan revealed a mass between the vaginal vault and bladder that was eventually surgically excised. The histology, supported by the immunohistochemistry, revealed metastatic acinic cell carcinoma to the vagina after 37 years of her initial diagnosis. This is the first reported case in the literature to occur in the vagina.

Risk factors for coexistence of cervical elongation in uterine prolapse.

OBJECTIVE: To identify factors predicting cervical elongation in women with uterine prolapse. STUDY DESIGN: The medical records of women with uterine prolapse who underwent vaginal hysterectomy were reviewed. Multivariable logistic regression analysis was performed to identify predictors of cervical elongation. RESULTS: Of 295 women with uterine prolapse, 136 (46.1%) patients had cervical elongation, according to Berger et al. Classification (i.e., cervical length >3.38 cm and/or cervix-to-corpus lengths ratio >0.79). Multivariable analysis revealed that lower parity (odds ratio = 0.85, 95% confidence interval [CI] = 0.73 to 0.99, P = 0.04) and advanced stage of uterine prolapse (odds ratio = 1.97, 95% CI = 1.35-2.88, P < 0.001) were predictors for cervical elongation. Based on a receiver operating characteristic curve (ROC) analysis, the following optimum cut-off values were determined for cervical elongation: (1) parity ≤3, ROC area = 0.60 (95% CI = 0.53 to 0.66); (2) stage of uterine prolapse ≥3, ROC area = 0.63 (95% CI = 0.56 to 0.69). Thus, the predicted logit(p) for a given parity (a) and stage of uterine prolapse (b) can be denoted by logit(p) = -1.26 - 0.16 x a + 0.68 x b. The optimum cut-off values of logit(p) ≥-0.18 to predict cervical elongation were determined using ROC analysis (area = 0.66, 95% CI = 0.59 to 0.73). For women with parity ≤6, we can use either (1) stage 2 uterine prolapse and parity ≤1, or (2) ≥ stage 3 uterine prolapse as criteria to predict cervical elongation. CONCLUSIONS: Lower parity and advanced stage of uterine prolapse are predictors of cervical elongation in women with uterine prolapse. Thus, stage of uterine prolapse ≥3 or logit(p) ≥-0.18 may be useful for predicting cervical elongation.

An intramural uterine fibroid became submucosal in the puerperium - proposed probable mechanism: a case report.

BACKGROUND: Vaginal prolapse of a large uterine fibroid is a rare phenomenon in a woman who delivered vaginally recently, given that this fibroid might have obstructed labor. The author presents a case report of a vaginally prolapsed large pedunculated submucosal uterine myoma in a woman with a recent uncomplicated vaginal delivery. CASE PRESENTATION: A 25-year-old black African woman had four intramural uterine fibroids of diameters 62 to 94 mm diagnosed in April 2013 with standard ultrasound scan. She got pregnant in July 2014. An ultrasound scan done on 31 August 2014 at 10 weeks' gestation identified four intramural uterine fibroids, with sizes varying from 70 to 150 mm. Her pregnancy was well followed up, without any complications. She had an uneventful vaginal delivery on 10 April 2015. During uterine exploration, indicated for retention of parts of fetal membranes, no pedunculated submucosal fibroid was found. On 15 May 2015, she consulted for difficult micturition and partial urinary retention that occurred 2 days ago. A vaginally prolapsed 10 cm uterine fibroid was diagnosed. Forty-eight hours after administration of intravenously administered broad spectrum antibiotics, the myoma was successfully twisted off by means of vaginal route under general anesthesia, which relieved her symptoms. CONCLUSIONS: To the best of our knowledge, this is the first case of vaginally prolapsed large submucosal uterine fibroid in a woman who delivered vaginally recently. The author recommends that women with known large low situated uterine fibroid should be well observed during the postpartum period to diagnose a vaginally prolapsed uterine fibroid early, so as to prevent fibroid superinfection and obstructive complications.

Functional pelvic floor anatomy in Nepali women attending a general gynaecology clinic.

INTRODUCTION AND HYPOTHESIS: Limited existing evidence suggests that there is a high prevalence of female pelvic organ prolapse (POP) amongst Nepali women. However, to date, no comprehensive assessment of pelvic floor functional anatomy has been undertaken in this population. Our study aimed to determine functional pelvic floor anatomy in Nepali women attending a general gynaecology clinic. METHODS: One hundred and twenty-nine consecutive women attending the clinic were offered an interview, clinical examination [International Continence Society Pelvic Organ Prolapse Quantification system (ICS/POP-Q)] and 4D translabial ultrasound (TLUS). Most presented with general gynaecological complaints. Five were excluded due to previous pelvic surgery, leaving 124. RESULTS: A POP-Q exam was possible in 123 women, of whom 29 (24%) were diagnosed with a significant cystocele, 50 (41%) significant uterine prolapse and seven (6%) significant posterior compartment prolapse. Evaluation of 4D TLUS data sets was possible in 120 women, of whom 25 (21%) had a significant cystocele, 45 (38%) significant uterine prolapse and ten (8%) significant descent of the rectal ampulla. In 13 cases, there was a rectocele with a mean depth of 14 (10-28) mm. Of 114 women in whom uterine position could be determined, 68 (60%) had a retroverted uterus associated with significant uterine prolapse (P 0.038). CONCLUSIONS: POP is common in Nepali women attending a general gynaecology clinic, with a high prevalence of uterine prolapse (40%). Uterine retroversion was seen in 60% and was associated with uterine prolapse. Patterns of POP in Nepal seem to be different from patterns observed in Western populations.

Admixture mapping of pelvic organ prolapse in African Americans from the Women's Health Initiative Hormone Therapy trial.

Evidence suggests European American (EA) women have two- to five-fold increased odds of having pelvic organ prolapse (POP) when compared with African American (AA) women. However, the role of genetic ancestry in relation to POP risk is not clear. Here we evaluate the association between genetic ancestry and POP in AA women from the Women's Health Initiative Hormone Therapy trial. Women with grade 1 or higher classification, and grade 2 or higher classification for uterine prolapse, cystocele or rectocele at baseline or during follow-up were considered to have any POP (N = 805) and moderate/severe POP (N = 156), respectively. Women with at least two pelvic exams with no indication for POP served as controls (N = 344). We performed case-only, and case-control admixture-mapping analyses using multiple logistic regression while adjusting for age, BMI, parity and global ancestry. We evaluated the association between global ancestry and POP using multiple logistic regression. European ancestry at the individual level was not associated with POP risk. Case-only and case-control local ancestry analyses identified two ancestry-specific loci that may be associated with POP. One locus (Chromosome 15q26.2) achieved empirically-estimated statistical significance and was associated with decreased POP odds (considering grade ≥2 POP) with each unit increase in European ancestry (OR: 0.35; 95% CI: 0.30, 0.57; p-value = 1.48x10-5). This region includes RGMA, a potent regulator of the BMP family of genes. The second locus (Chromosome 1q42.1-q42.3) was associated with increased POP odds with each unit increase in European ancestry (Odds ratio [OR]: 1.69; 95% confidence interval [CI]: 1.28, 2.22; p-value = 1.93x10-4). Although this region did not reach statistical significance after considering multiple comparisons, it includes potentially relevant genes including TBCE, and ACTA1. Unique non-overlapping European and African ancestry-specific susceptibility loci may be associated with increased POP risk.

Towards rebuilding vaginal support utilizing an extracellular matrix bioscaffold.

As an alternative to polypropylene mesh, we explored an extracellular matrix (ECM) bioscaffold derived from urinary bladder matrix (MatriStem™) in the repair of vaginal prolapse. We aimed to restore disrupted vaginal support simulating application via transvaginal and transabdominal approaches in a macaque model focusing on the impact on vaginal structure, function, and the host immune response. In 16 macaques, after laparotomy, the uterosacral ligaments and paravaginal attachments to pelvic side wall were completely transected (IACUC# 13081928). 6-ply MatriStem was cut into posterior and anterior templates with a portion covering the vagina and arms simulating uterosacral ligaments and paravaginal attachments, respectively. After surgically exposing the correct anatomical sites, in 8 animals, a vaginal incision was made on the anterior and posterior vagina and the respective scaffolds were passed into the vagina via these incisions (transvaginal insertion) prior to placement. The remaining 8 animals underwent the same surgery without vaginal incisions (transabdominal insertion). Three months post implantation, firm tissue bands extending from vagina to pelvic side wall appeared in both MatriStem groups. Experimental endpoints examining impact of MatriStem on the vagina demonstrated that vaginal biochemical and biomechanical parameters, smooth muscle thickness and contractility, and immune responses were similar in the MatriStem no incision group and sham-operated controls. In the MatriStem incision group, a 41% decrease in vaginal stiffness (P=0.042), a 22% decrease in collagen content (P=0.008) and a 25% increase in collagen subtypes III/I was observed vs. Sham. Active MMP2 was increased in both Matristem groups vs. Sham (both P=0.002). This study presents a novel application of ECM bioscaffolds as a first step towards the rebuilding of vaginal support. STATEMENT OF SIGNIFICANCE: Pelvic organ prolapse is a common condition related to failure of the supportive soft tissues of the vagina; particularly at the apex and mid-vagina. Few studies have investigated methods to regenerate these failed structures. The overall goal of the study was to determine the feasibility of utilizing a regenerative bioscaffold in prolapse applications to restore apical (level I) and lateral (level II) support to the vagina without negatively impacting vaginal structure and function. The significance of our findings is two fold: 1. Implantation of properly constructed extracellular matrix grafts promoted rebuilding of level I and level II support to the vagina and did not negatively impact the overall functional, morphological and biochemical properties of the vagina. 2. The presence of vaginal incisions in the transvaginal insertion of bioscaffolds may compromise vaginal structural integrity in the short term.