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Levator ani

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https://www.readbyqxmd.com/read/28542276/effect-of-combined-actions-of-hip-adduction-abduction-on-the-force-generation-and-maintenance-of-pelvic-floor-muscles-in-healthy-women
#1
Amanda C Amorim, Licia P Cacciari, Anice C Passaro, Simone R B Silveira, Cesar F Amorim, Jefferson F Loss, Isabel C N Sacco
Pelvic floor muscle (PFM) force and coordination are related to urinary incontinence severity and to sexual satisfaction. Health professionals frequently combine classic PFM exercises with hip adduction/abduction contraction to treat these disorders, but the real benefits of this practice are still unknown. Based on a theoretical anatomy approach whereby the levator ani muscle is inserted into the obturator internus myofascia and in which force generated by hip movements should increase the contraction quality of PFMs, our aim was to investigate the effects of isometric hip adduction and abduction on PFM force generation...
2017: PloS One
https://www.readbyqxmd.com/read/28509338/investigation-of-the-ischioanal-fossa-application-to-abscess-spread
#2
Jian-Fei Zhang, Mei-Ling Du, Hong-Jin Sui, Yong Yang, Huan-Yu Zhou, Chao Meng, Meijing Qu, Qian Zhang, Bin Du, Yuan-Shan Fu
The location of perianal abscesses and the course of the fistula follow certain patterns, especially in the relationship between external and internal openings. However, it is still not clear how the contents of the ischioanal fossa, especially the fibrous network of fat tissue, affect the route for such diseases. Ten male adult cadavers were selected for the study. Seven horizontal transverse section planes from 1cm above the pubic symphysis to the inferior border of the lesser trochanter of the femur were recorded after P45 sheet plastination...
May 16, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28504114/a-shortened-tamoxifen-induction-scheme-to-induce-creer-recombinase-without-side-effects-on-the-male-mouse-skeleton
#3
Ferran Jardí, Michaël R Laurent, Vanessa Dubois, Rougin Khalil, Ludo Deboel, Dieter Schollaert, Ludo Van Den Bosch, Brigitte Decallonne, Geert Carmeliet, Frank Claessens, Dirk Vanderschueren
The selective estrogen receptor modulator tamoxifen exerts estrogen agonistic or antagonistic actions on several tissues, including bone. The off-target effects of tamoxifen are one of the most widely recognized pitfalls of tamoxifen-inducible Cre recombinases (CreERs), potentially confounding the phenotypic findings. Still, the validation of tamoxifen induction schemes that minimize the side effects of the drug has not been addressed. Here, we compared the side effects on the skeleton and other androgen-responsive targets of a shortened tamoxifen regimen (2 doses of 190 mg/kg body weight by oral gavage) to a standard protocol (4 doses) and determined their efficiency in inducing CreER-mediated gene deletion...
May 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28479768/laparoscopic-sacrocolpopexy-using-barbed-sutures-for-mesh-fixation-and-peritoneal-closure-a-safe-option-to-reduce-operational-times
#4
Panagiotis Kallidonis, Abdulrahman Al-Aown, Marinos Vasilas, Iason Kyriazis, Vasilis Panagopoulos, Fotini Fligou, Anastasios Athanasopoulos, Bagheri Fariborz, Evangelos Liatsikos, Mehmet Özsoy
INTRODUCTION: Laparoscopic sacrocolpopexy (LSC) has established itself as a safe method for the management of pelvic organ prolapse (POP). Laparoscopic suturing is a time-consuming intraoperative task during LSC. Self-retaining barbed sutures (SBSs) are known to reduce the operative time in laparoscopic cases. The current study aimed to evaluate the efficacy and safety of SBS during the performance of LSC. MATERIALS AND METHODS: Twenty female patients with symptomatic POP were treated with LSC by an expert surgeon...
April 2017: Urology Annals
https://www.readbyqxmd.com/read/28462429/on-the-stiffness-of-the-mesh-and-urethral-mobility-a-finite-element-analysis
#5
Sofia Brandão, Marco Parente, Thuane Huyer Da Roza, Elisabete Silva, Isabel Maria Ramos, Teresa Mascarenhas, Renato Manuel Natal Jorge
Midurethral slings are used to correct urethral hypermobility in female stress urinary incontinence, defined as the complaint of involuntary urine leakage when the intra-abdominal pressure is increased. Structural and thermal features influence their mechanical properties, which may explain postoperative complications, e.g., erosion, urethral obstruction. We studied the effect of the mesh stiffness on urethral mobility at Valsalva maneuver, under impairment of the supporting structures (levator ani and/or ligaments), by using a numerical model...
May 2, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28455942/the-evaluation-of-pelvic-floor-muscle-strength-in-women-with-pelvic-floor-dysfunction-a-reliability-and-correlation-study
#6
Beatriz Navarro Brazález, María Torres Lacomba, Pedro de la Villa, Beatriz Sánchez Sánchez, Virginia Prieto Gómez, Ángel Asúnsolo Del Barco, Linda McLean
AIMS: The purposes of this study were: (i) to evaluate the reliability of vaginal palpation, vaginal manometry, vaginal dynamometry; and surface (transperineal) electromyography (sEMG), when evaluating pelvic floor muscle (PFM) strength and/or activation; and (ii) to determine the associations among PFM strength measured using these assessments. METHODS: One hundred and fifty women with pelvic floor disorders participated on one occasion, and 20 women returned for the same investigations by two different raters on 3 different days...
April 28, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28450789/body-after-baby-a-pilot-survey-of-genital-body-image-and-sexual-esteem-following-vaginal-birth
#7
Ruth Zielinski, Lisa Kane Low, Abigail R Smith, Janis M Miller
OBJECTIVE: The aim of this study was to determine acceptability of the Vaginal Changes Sexual and Body Esteem (VSBE) scale for women post childbirth and explore the association between childbirth events and sexual/body esteem. DESIGN: This is a cross-sectional study within the Evaluating Maternal Recovery from Labor and Delivery study. SETTING: This study was conducted in a community setting. POPULATION: The study was conducted in women post first vaginal birth with birth events that posed risk factors for levator ani muscle tears...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28412846/changes-in-levator-hiatus-dimensions-during-pregnancy-and-after-delivery-in-nulliparas-a-prospective-cohort-study-using-3d-transperineal-ultrasound
#8
A Sanozidis, T Mikos, E Assimakopoulos, A Athanasiadis, T Tantanassis, B C Tarlatzis, V Papameletiou
PURPOSE: The purpose of this study was to investigate the changes that occur in the levator ani muscle (1) during pregnancy and (2) after labor depending on the mode of delivery in a cohort of nulliparas. MATERIALS AND METHODS: A prospective cohort longitudinal study, consisting of 84 primiparas who were examined and recruited in an antenatal clinic was conducted. All participants were submitted to a real-time three-dimensional (3D) ultrasonographic evaluation of the levator ani at (1) 12, (2) 22, and (3) 32 weeks of pregnancy (4) and 4-6 months postdelivery...
May 5, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28412085/in%C3%A2-vivo-evidence-of-significant-levator-ani-muscle-stretch-on%C3%A2-mr-images-of-a-live-childbirth
#9
Nikhil Sindhwani, Christian Bamberg, Nele Famaey, Geertje Callewaert, Joachim W Dudenhausen, Ulf Teichgräber, Jan Deprest
OBJECTIVE: Vaginal childbirth is believed to be a significant risk factor for the development of pelvic floor dysfunction later in life. Previous studies have explored the use of medical imaging and simulations of childbirth to determine the stretch in the levator ani muscle. A report in 2012 has recorded magnetic resonance images of a live childbirth of a 24 year old woman giving birth vaginally for the second time, using a 1.0 Tesla open, high-field scanner. Our objective was to determine the stretch ratios in the levator muscle using these magnetic resonance images of live childbirth...
April 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28363748/synthesis-and-biological-evaluation-of-novel-selective-androgen-receptor-modulators-sarms-part-ii-optimization-of-4-pyrrolidin-1-yl-benzonitrile-derivatives
#10
Moriteru Asano, Takenori Hitaka, Takashi Imada, Masami Yamada, Megumi Morimoto, Hiromi Shinohara, Takahito Hara, Masuo Yamaoka, Takashi Santou, Masaharu Nakayama, Yumi Imai, Noriyuki Habuka, Jason Yano, Keith Wilson, Hisashi Fujita, Atsushi Hasuoka
We recently reported a class of novel tissue-selective androgen receptor modulators (SARMs), represented by a naphthalene derivative A. However, their pharmacokinetic (PK) profiles were poor due to low metabolic stability. To improve the PK profiles, we modified the hydroxypyrrolidine and benzonitrile substituents of 4-(pyrrolidin-1-yl)benzonitrile derivative B, which had a comparable potency as that of compound A. This optimization led us to further modifications, which improved metabolic stability while maintaining potent androgen agonistic activity...
May 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28338402/testosterone-plus-finasteride-prevents-bone-loss-without-prostate-growth-in-a-rodent-spinal-cord-injury-model
#11
Joshua F Yarrow, Ean G Phillips, Christine F Conover, Taylor E Bassett, Cong Chen, Tyler Teurlings, Andrea Vasconez, Jonathan Alerte, Hannah M Prock, Jessica M Jiron, Micah Flores, J Ignacio Aguirre, Stephen E Borst, Fan Ye
We have reported that testosterone-enanthate (TE) prevents the musculoskeletal decline occurring acutely after spinal cord injury (SCI), but results in a near doubling of prostate mass. Our purpose was to test the hypothesis that administration of TE plus finasteride (FIN, type II 5α-reductase inhibitor) would prevent the chronic musculoskeletal deficits in our rodent severe contusion SCI model, without inducing prostate enlargement. Forty-three 16-week old male Sprague-Dawley rats received: (1) SHAM surgery (T9 laminectomy), (2) severe (250 kdyne) contusion SCI, (3) SCI+TE (7...
March 24, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28323222/laparoscopic-nerve-preserving-sacropexy
#12
Alfredo Ercoli, Stefano Cosma, Francesca Riboni, Giuseppe Campagna, Paolo Petruzzelli, Daniela Surico, Saverio Danese, Giovanni Scambia, Chiara Benedetto
STUDY OBJECTIVE: to demonstrate our developed nerve preserving technique during laparoscopic sacropexy (LSP) for multicompartment pelvic organ prolapse. DESIGN: exemplificative case of our surgical procedure based on a multicentric experience consisting of more than 800 cases in 10 years without major intraoperative complications. Informed consent was taken from the subject, and the institutional review board approved this research. SETTING: public practice at Maggiore della Carità University Hospital, Novara; at Sant'Anna Hospital, City of Health and Science, University of Torino; at A...
March 17, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28321474/transvaginal-iliococcygeus-fixation-for-posthysterectomy-vaginal-vault-prolapse-repair
#13
Rodolfo Milani, Matteo Frigerio, Federico Spelzini, Stefano Manodoro
INTRODUCTION AND HYPOTHESIS: Posthysterectomy vaginal vault prolapse repair is a surgical challenge. Successful surgical management using native tissue can be achieved via the vaginal approach by iliococcygeus fascia fixation. However, although iliococcygeus fascia fixation is technically simple and has a low morbidity, it is not commonly performed. The aim of the video is to provide anatomic views and the surgical steps necessary to achieve successful transvaginal iliococcygeus fascia fixation for vaginal vault prolapse repair...
March 20, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28299781/architectural-differences-in-the-anterior-and-middle-compartments-of-the-pelvic-floor-of-young-adult-and-postmenopausal-females
#14
Yi Wu, Noshir F Dabhoiwala, Jaco Hagoort, Li-Wen Tan, Shao-Xiang Zhang, Wouter H Lamers
The pelvic floor guards the passage of the pelvic organs to the exterior. The near-epidemic prevalence of incontinence in women continues to generate interest in the functional anatomy of the pelvic floor. However, due to its complex architecture and poor accessibility, the classical 'dissectional' approach has been unable to come up with a satisfactory description, so that many aspects of its anatomy continue to raise debate. For this reason, we opted for a 'sectional' approach, using the Chinese Visible Human project (four females, 21-35 years) and the Visible Human Project (USA; one female, 59 years) datasets to investigate age-related changes in the architecture of the anterior and middle compartments of the pelvic floor...
March 16, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28282764/influence-of-difficulty-of-instrumentation-with-vacuum-on-the-rate-of-levator-ani-muscle-avulsion-identified-by-3-4%C3%A2-d-transperineal-ultrasound
#15
José Antonio García Mejido, Paloma De la Fuente Vaquero, Ana Fernández Palacín, Adriana Aquise Pino, María José Bonomi Barby, José Antonio Sainz Bueno
OBJECTIVES: Evaluation of the influence of difficulty of instrumentation with vacuum on the rate of levator ani muscle (LAM) avulsions. MATERIALS AND METHODS: Prospective observational study with 86 nulliparous women with at term gestation who required instrumentation with vacuum to complete fetal extraction. After every delivery, each explorer reported the number of vacuum tractions needed to complete fetal extraction, as well as the subjective complexity of the instrumentation...
March 1, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28277469/correlation-between-transperineal-3-dimensional-ultrasound-measurements-of-levator-hiatus-and-female-sexual-function
#16
Serdar Aydin, Rabia Zehra Bakar, Çağri Arioğlu Aydin, Seda Ateş
OBJECTIVE: The aim of this study is to investigate the association of sexual functions with levator hiatus biometry measurements and levator ani muscle defect. METHODS: In 62 heterosexual, sexually active premenopausal women without pelvic floor disorders or urinary incontinence, 3-dimensional transperineal ultrasound imaging was used. Two 3-dimensional volumes were recorded, one at rest and one on Valsalva maneuver. Levator biometry measurements and levator defect were evaluated in an axial plane...
March 9, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28265140/measurement-the-thickness-of-the-transverse-abdominal-muscle-in-different-tasks
#17
Ling Pang, Liquan Yin, Kimiko Tajiri, Ming Huo, Hitoshi Maruyama
[Purpose] This study examined the measurement of the thickness of the transverse abdominal muscle in different tasks. [Subjects and Methods] The subjects were eleven healthy adult females. Thicknesses of transverse abdominal muscle were measured in seven tasks in the supine position. The tasks were: 1) Resting state, 2) Maximal contraction of transverse abdominal muscle, 3) Maximal contraction of levator ani muscle, 4) Maximal simultaneous contraction of both transverse abdominal muscle and levator ani muscle, 5) Maximal simultaneous contraction of both transverse abdominal muscle and levator ani muscle with front side resistance added to both knee, 6) Maximal simultaneous contraction of both transverse abdominal muscle and levator ani muscle with diagonal resistance added to both knees, and 7) Maximal simultaneous contraction of both transverse abdominal muscle and levator ani muscle with lateral resistance added to both knees...
February 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28252314/-current-state-of-transvaginal-meshes-by-resolution-of-pelvic-organ-prolapse
#18
J Jírová, M Pán
OBJECTIVE: Treatment of pelvic organs prolapse with transvaginal mesh kits represents nowadays a widespread surgical method, which partially replaced classic operations due to high success rate and low count of recurrences. Just like any other surgical method, the placement of transvaginal mesh is linked with occurrence of complications. In this article we attempt to review the more and less known facts about trans-vaginal meshes, their efficacy, count of recurrence and the spectrum of complications and we try to compare this technique with traditional surgical methods used to treat pelvic organs prolapse (without graft materials)...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28236365/a-longitudinal-follow-up-of-pelvic-floor-biometry-what-are-the-factors-affecting-it
#19
Symphorosa Sc Chan, Rachel Yk Cheung, L L Lee, Tony Kh Chung
OBJECTIVE: To evaluate pelvic floor biometry 3-5 years after first delivery. The effect of a second delivery and mode of delivery were studied. METHODS: Women, who had been assessed at first pregnancy, 8 weeks postnatally and one year after delivery, were invited for follow-up. Positions of the bladder neck (BN), cervix, anorectal junction and hiatal area (HA), were evaluated by translabial ultrasound. The effects of parity, mode of delivery and levator ani muscle (LAM) avulsion were studied...
February 25, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28224270/intrapartal-pelvic-floor-protection-a-pragmatic-and-interdisciplinary-approach-between-obstetrics-and-urogynecology
#20
Markus Huebner, Sara Y Brucker, Ralf Tunn, Gert Naumann, Christl Reisenauer, Harald Abele
Pelvic floor protection is an issue of increasing relevance. This article sought to summarize the session at last year's annual meeting of the German Society of Gynecology and Obstetrics (DGGG) in Stuttgart (10/2016) called "Urogynecology 2020-what is the optimal rate of cesarean section-does urogynecology have to deal with Obstetrics?". The main focus was set on the two important anatomical structures, the levator ani muscle and the anal sphincters. Operative vaginal delivery, epidural anesthesia, and episiotomy are subject to discussion...
February 21, 2017: Archives of Gynecology and Obstetrics
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