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Levator ani

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https://www.readbyqxmd.com/read/29786037/preliminary-outcome-of-individualized-abdominoperineal-excision-for-locally-advanced-low-rectal-cancer
#1
Yi Zheng, Jia-Gang Han, Zhen-Jun Wang, Zhi-Gang Gao, Guang-Hui Wei, Zhi-Wei Zhai, Bao-Cheng Zhao
Background: The introduction of individualized abdominoperineal excision (APE) may minimize operative trauma and reduce the rate of complications. The purpose of this study was to evaluate the safety and efficacy of individualized APE for low rectal cancer. Methods: Fifty-six patients who underwent individualized APE from June 2011 to June 2015 were evaluated retrospectively in Beijing Chaoyang Hospital, Capital Medical University. The main outcome measures were circumferential resection margin (CRM) involvement, intraoperative perforation, postoperative complications, and local recurrence...
June 5, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29779185/predictive-role-of-measurement-of-pelvic-floor-muscle-thickness-with-static-mri-in-stress-and-mixed-urinary-incontinence
#2
Levent Yaşar, Serpil Ortakuz Telci, Keziban Doğan, Eyüp Kaya, Murat Ekin
INTRODUCTION AND HYPOTHESIS: To investigate the role of measuring the thickness of pelvic floor muscles with static MRI in the physiopathology of urinary incontinence in women with stress and mixed types of urinary incontinence diagnosed with urodynamic studies. METHODS: A retrospective clinical study was designed in collaboration with the radiology department. We recruited only patients who had undergone static pelvic MRI to determine the etiology of pelvic pain and exclude gynecologic disorders...
May 19, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29757662/a-review-of-the-surgical-management-of-perineal-hernias-in-dogs
#3
Sukhjit Singh Gill, Robert D Barstad
Perineal hernia refers to the failure of the muscular pelvic diaphragm to support the rectal wall, resulting in herniation of pelvic and, occasionally, abdominal viscera into the subcutaneous perineal region. The proposed causes of pelvic diaphragm weakness include tenesmus associated with chronic prostatic disease or constipation, myopathy, rectal abnormalities, and gonadal hormonal imbalances. The most common presentation of perineal hernia in dogs is a unilateral or bilateral nonpainful swelling of the perineum...
May 14, 2018: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/29749657/fundal-pressure-in-second-stage-of-labor-kristeller-maneuver-is-associated-with-higher-risk-of-levator-ani-muscle-avulsion
#4
Aly Youssef, Ginevra Salsi, Ilaria Cataneo, Giuseppina Pacella, Carlotta Azzarone, Maria Chiara Paganotto, Jovana Krsmanovic, Elisa Montaguti, Luisa Cariello, Federica Bellussi, Nicola Rizzo, Gianluigi Pilu
OBJECTIVE: to investigate the association between fundal pressure in the second stage (Kristeller maneuver) and the risk of levator ani muscle (LAM) injury. METHODS: This was a prospective case-control study conducted in our university hospital. We recruited women immediately following their first vaginal delivery. Women who underwent Kristeller maneuver were recruited as cases. For each case, a control (no Kristeller) was recruited matched by BMI, epidural analgesia, second stage duration and birthweight...
May 10, 2018: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29742860/essential-anatomy-of-the-anorectum-for-colorectal-surgeons-focused-on-the-gross-anatomy-and-histologic-findings
#5
REVIEW
Jong Min Lee, Nam Kyu Kim
The anorectum is a region with a very complex structure, and surgery for benign or malignant disease of the anorectum is impossible without accurate anatomical knowledge. The conjoined longitudinal muscle consists of smooth muscle from the longitudinal muscle of the rectum and the striate muscle from the levator ani and helps maintain continence; the rectourethralis muscle is connected directly to the conjoined longitudinal muscle at the top of the external anal sphincter. Preserving the rectourethralis muscle without damage to the carvernous nerve or veins passing through it when the abdominoperineal resection is implemented is important...
April 2018: Annals of Coloproctology
https://www.readbyqxmd.com/read/29731323/on-the-variation-in-maternal-birth-canal-in-vivo-viscoelastic-properties-and-their-effect-on-the-predicted-length-of-active-second-stage-and-levator-ani-tears
#6
Paige V Tracy, Shreya Wadhwani, Jourdan Triebwasser, Alan S Wineman, Francisco J Orejuela, Susan M Ramin, John O DeLancey, James A Ashton-Miller
The pubovisceral muscles (PVM) help form the distal maternal birth canal. It is not known why 13% of vaginal deliveries end in PVM tears, so insights are needed to better prevent them because their sequelae can lead to pelvic organ prolapse later in life. In this paper we provide the first quantification of the variation in in vivo viscoelastic properties of the intact distal birth canal in healthy nulliparous women using Fung's Quasilinear Viscoelastic Theory and a secondary analysis of data from a clinical trial of constant force birth canal dilation to 8 cm diameter in the first stage of labor in 26 nullipara...
April 25, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29722624/cross-talk-between-androgen-and-wnt-signaling-potentially-contributes-to-age-related-skeletal-muscle-atrophy-in-rats
#7
Petey W Mumford, Matthew A Romero, Xuansong Mao, C Brooks Mobley, Wesley C Kephart, Cody T Haun, Paul A Roberson, Kaelin C Young, Jeffrey S Martin, Joshua F Yarrow, Darren T Beck, Michael D Roberts
We sought to determine whether age-related gastrocnemius muscle mass loss was associated with parallel decrements in androgen receptor (AR) or select Wnt signaling markers. To test this hypothesis, serum free and total testosterone (TEST) as well as gastrocnemius AR and Wnt signaling markers were analyzed in male Fischer 344 rats that were 3/6/12/18 and 24 months (mo) old (n=9 per group). Free and total TEST were greatest in 6 mo rats, and AR protein and Wnt5 protein levels linearly declined with aging. There were associations between Wnt5 protein levels and relative gastrocnemius mass (r=0...
May 3, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29707681/hershberger-assays-for-di-2-ethylhexyl-phthalate-and-its-substitute-candidates
#8
Hee-Su Kim, Yong-Pil Cheon, Sung-Ho Lee
In the present study, we employed Hershberger assay to determine possible androgenic or antiandrogenic activities of three di-2-ethylhexyl phthalate (DEHP) substitute candidates. The assay was carried out using immature castrated Sprague-Dawley male rats. After 7 days of the surgery, testosterone propionate (TP, 0.4 mg/kg/day) and test materials (low dose, 40 mg/kg/day; high dose, 400 mg/kg/day) were administered for 10 consecutive days by subcutaneous (s.c.) injection and oral gavage, respectively. Test materials were DEHP, 2-ethylhexyl oleate (IOO), 2-ethylhexyl stearate (IOS) and triethyl 2-acetylcitrate (ATEC)...
March 2018: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/29676809/prevalence-of-maternal-birth-trauma-in-nepali-women
#9
Friyan Turel, Delena Caagbay, Hans Peter Dietz
OBJECTIVES: Pelvic organ prolapse is very common among women in Nepal, especially uterine prolapse. This would suggest a high rate of levator trauma, which is a strong predictor of such prolapse in the Western world. Hence, we decided to study the prevalence of maternal birth trauma in Nepali women. METHODS: In November 2016, we offered an interview, clinical examination, and 4-dimensional translabial sonography to women attending a gynecology clinic. Of 129 women seen, 5 were excluded due to previous pelvic surgery...
April 20, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29672905/association-between-pelvic-organ-prolapse-types-and-levator-urethra-gap-as-measured-by-3d-transperineal-ultrasound
#10
Bence Kozma, Kindra Larson, Lauren Scott, Tina D Cunningham, Alfred Abuhamad, Robert Poka, Peter Takacs
OBJECTIVES: To evaluate the association between pelvic organ prolapse (POP) types and levator-urethra gap (LUG) as measured by 3-dimensional transperineal tomographic ultrasound. METHODS: A retrospective study was carried out on 98 women with symptomatic POP. Three-dimensional transperineal tomographic ultrasound images and POP quantification coordinates were reviewed. Each vaginal compartment was staged for the degree of prolapse, and total number of involved compartments identified...
April 19, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29656330/risk-factors-for-anatomic-pelvic-organ-prolapse-at-6-weeks-postpartum-a-prospective-observational-study
#11
Cathrine Reimers, Franziska Siafarikas, Jette Stær-Jensen, Milada Cvancarova Småstuen, Kari Bø, Marie Ellström Engh
INTRODUCTION AND HYPOTHESIS: The objective was to identify risk factors for postpartum anatomic pelvic organ prolapse (aPOP) by comparing women with and without aPOP at 6 weeks postpartum with regard to pelvic floor measurements antepartum and obstetrical characteristics. METHODS: We carried out a prospective observational cohort study including nulliparous pregnant women in a Norwegian university hospital. Participants underwent clinical examinations, including pelvic organ prolapse quantification system (POP-Q) and transperineal ultrasound at gestational week 21 and at 6 weeks postpartum...
April 14, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29603118/magnetic-resonance-imaging-of-vaginal-support-structure-before-and-after-vecchietti-procedure-in-women-with-mayer-rokitansky-k%C3%A3-ster-hauser-syndrome
#12
Markus Huebner, John O L DeLancey, Christl Reisenauer, Sara Y Brucker, Heike Preibsch, Sabrina Fleischer, Dorit Schoeller, Diana Stefanescu, Katharina Rall
INTRODUCTION: It is unclear, how pelvic floor supporting structures might be affected by the absence of the vagina. It was the aim of this prospective study to analyze the magnetic resonance imaging (MRI) morphology of pelvic support prior and after a Vecchietti procedure in women suffering Mullerian agenesis (Mayer-Rokitansky-Küster-Hauser syndrome). MATERIAL AND METHODS: N=26 women with a diagnosis of Mayer-Rokitansky-Küster-Hauser syndrome associated vaginal agenesis were recruited prospectively prior to the laparoscopic creation of a neovagina according to the Vecchietti procedure...
March 30, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29579075/effects-of-pharmacologic-sclerostin-inhibition-or-testosterone-administration-on-soleus-muscle-atrophy-in-rodents-after-spinal-cord-injury
#13
Ean G Phillips, Luke A Beggs, Fan Ye, Christine F Conover, Darren T Beck, Dana M Otzel, Payal Ghosh, Anna C F Bassit, Stephen E Borst, Joshua F Yarrow
Sclerostin is a circulating osteocyte-derived glycoprotein that negatively regulates Wnt-signaling after binding the LRP5/LRP6 co-receptors. Pharmacologic sclerostin inhibition produces bone anabolic effects after spinal cord injury (SCI), however, the effects of sclerostin-antibody (Scl-Ab) on muscle morphology remain unknown. In comparison, androgen administration produces bone antiresorptive effects after SCI and some, but not all, studies have reported that testosterone treatment ameliorates skeletal muscle atrophy in this context...
2018: PloS One
https://www.readbyqxmd.com/read/29577793/can-we-predict-levator-ani-muscle-avulsion-in-instrumental-deliveries-through-intrapartum-transperineal-ultrasound
#14
José Antonio García-Mejido, Paloma de la Fuente, Adriana Aquise, Laura Castro, Ana Fernández-Palacín, José Antonio Sainz
INTRODUCTION: To determine whether intrapartum translabial ultrasound (ITU) is useful for the prediction of levator ani muscle (LAM) avulsions in instrumental deliveries (vacuum, forceps). MATERIAL AND METHODS: Prospective, observational study, including (1/2016 - 5/2016) 77 nulliparous women, with singleton pregnancies of ≥ 37 weeks of gestation and with cephalic presentation, who required vacuum or forceps instrumentation to complete the delivery. The ITU parameters evaluated were: Angle of Progression (AoP), Progression Distance (PD), Head Direction (HD) and Midline Angle (MLA), both at rest and with maternal push...
March 25, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29577446/the-anatomy-of-the-male-inferior-hypogastric-plexus-what-should-we-know-for-nerve-sparing-surgery
#15
Raphael Röthlisberger, Valerie Aurore, Susanne Boemke, Hannes Bangerter, Mathias Bergmann, George N Thalmann, Valentin Djonov
INTRODUCTION: The aim of this study was to investigate the nerve supply to the structures in the male lesser pelvis and review its clinical relevance, especially during nerve sparing surgery. MATERIAL AND METHODS: Three formalin-embalmed and 16 Thiel-embalmed male hemipelves were used. They were microdissected after repeated treatments with nitric acid diluted 1:10 with milliQ-water. RESULTS: The inferior hypogastric plexus is a fan-ike structure lateral from the rectum on the fascia of the levator ani...
March 25, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29564512/does-vaginal-delivery-cause-more-damage-to-the-pelvic-floor-than-cesarean-section-as-determined-by-3d-ultrasound-evaluation-a-systematic-review
#16
REVIEW
Camila Carvalho de Araujo, Suelene A Coelho, Paulo Stahlschmidt, Cassia R T Juliato
INTRODUCTION AND HYPOTHESIS: Pregnancy and delivery are well-established risk factors for pelvic floor dysfunction (PFD), but the physiopathology, such as the delivery route, is not well understood. This study evaluated the impact of delivery route on the pelvic floor muscles via 3D ultrasound. METHODS: This review is registered in the PROSPERO database. The criteria for inclusion were prospective studies with 3D translabial ultrasound assessment in primigravida women during pregnancy and postpartum published in English, Spanish or Portuguese between 1980 and 2016...
March 21, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29564511/it-is-the-first-birth-that-does-the-damage-a-cross-sectional-study-20-years-after-delivery
#17
Ixora Kamisan Atan, Sylvia Lin, Hans Peter Dietz, Peter Herbison, Peter Donald Wilson
INTRODUCTION AND HYPOTHESIS: Levator ani muscle (LAM) and anal sphincter tears are common after vaginal birth and are associated with female pelvic organ prolapse and anal incontinence. The impact of subsequent births on LAM and external anal sphincter (EAS) integrity is less well defined. The objective of this study was to determine the prevalence of LAM and EAS trauma in primiparous (VP1) and multiparous (VP2+) women who had delivered vaginally to assess if there were differences between the two groups...
March 21, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29560770/correlation-between-pelvic-floor-strength-and-physical-activity-level-in-healthy-men
#18
Luiz Eduardo Sousa, Andre Avarese Figueiredo, José Murillo Bastos Netto
The male pelvic floor muscles comprise a pair of compound muscle layers referred to as the levator ani. Studies have shown that pelvic floor muscle strength is affected by physical activity. This study aimed to assess male pelvic floor muscle strength through manometry of the external anal sphincter and evaluation of its association with physical activity level, BMI, and rectal pressure in healthy men. To assess physical activity level over the previous week, we used the International Physical Activity Questionnaire 8 (IPAQ)...
March 21, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29556817/a-review-of-current-treatment-options-for-coccygodynia
#19
REVIEW
Yasmin Elkhashab, Andrew Ng
PURPOSE OF REVIEW: Coccygodynia is pain within the coccyx area. The diagnosis is made clinically with symptoms of pain in the coccyx region and worsening pain in sitting position. The initial treatment is conservative therapy. For patients who do not respond to conservative therapies, there are further interventions available. This includes local injection of local anesthetics and steroids, neurolysis of sacral nerve roots, caudal epidural block, pulse radiofrequency (PRF), intra-rectal massage and manipulation, ganglion impar block, levator ani massage and stretching, coccyx manipulation, and coccygectomy...
March 19, 2018: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/29522121/clinical-criteria-of-central-sensitization-in-chronic-pelvic-and-perineal-pain-convergences-pp-criteria-elaboration-of-a-clinical-evaluation-tool-based-on-formal-expert-consensus
#20
Amélie Levesque, Thibault Riant, Stéphane Ploteau, Jérôme Rigaud, Jean-Jacques Labat
Background: The evaluation of chronic pelvic and perineal pain (CPP) is often complex. The patient's description of the pain often appears to be disproportionate to the limited findings on physical examination and/or complementary investigations. The concept of central sensitization may allow better understanding and management of patients with CPP. Objective: The aim of this study was to elaborate a clinical evaluation tool designed to simply identify sensitization in pelvic pain...
March 7, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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