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Levator muscle

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https://www.readbyqxmd.com/read/29158172/estimated-minimal-residual-membranous-urethral-length-on-preoperative-magnetic-resonance-imaging-can-be-a-new-predictor-for-continence-after-radical-prostatectomy
#1
Yohei Satake, Yasuhiro Kaiho, Hideo Saito, Takayuki Yamada, Naoki Kawamorita, Shinichi Yamashita, Koji Mitsuzuka, Shigeyuki Yamada, Akihiro Ito, Yoichi Arai
OBJECTIVE: To identify a parameter predicting postoperative recovery of urinary continence after radical prostatectomy, associations between parameters on preoperative magnetic resonance imaging (MRI) and postoperative continence status were investigated. METHODS: This prospective study enrolled 113 patients with localized prostate cancer who underwent MRI before radical prostatectomy. Continence was evaluated using the Expanded Prostate Index Composite instrument before surgery and at 1, 3, 6, 12, 18, 24, and 36 months postoperatively...
November 17, 2017: Urology
https://www.readbyqxmd.com/read/29146863/modeling-search-movements-of-an-insect-s-front-leg
#2
Tibor I Tóth, Eva Berg, Silvia Daun
Beside locomotion, search movements are another important type of motor activity of insects. They are very often performed by the front legs of the animals. They consist of cyclic stereotypical leg movements that can be modified by sensory signals. The details of the local organization of these movements have however not yet been studied. In this paper, we, using an appropriate variant of our existing one-leg model, present a scheme of how these searching movements might be organized and performed on the level of local neuromuscular control networks...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29106650/selective-cervical-denervation-for-cervical-dystonia-modification-of-the-bertrand-procedure
#3
Thomas J Wilson, Robert J Spinner
BACKGROUND: Cervical dystonia, commonly referred to as spasmodic torticollis, is a neurological disorder characterized by aberrant, involuntary contraction of the muscles of the neck and shoulders. One surgical option that can be considered is selective cervical denervation. OBJECTIVE: To report our modification of the Bertrand procedure for selective cervical denervation. METHODS: Our modification of the Bertrand procedure for selective cervical denervation is reported with intraoperative photographs and schematic depictions of the operative steps...
July 6, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29101765/novel-anatomic-mapping-of-pelvic-plexus-at-prostatic-and-periprostatic-region-on-fresh-frozen-cadaveric-setting
#4
Emre Huri, Mustafa F Sargon, Ilkan Tatar, Makbule Cisel Aydin, Mehmet Ezer, Figen Soylemezoglu
PURPOSE: We aimed to investigate the exact localization of neural pathway and the frequency of nerve fibers, which are located in the pelvic facial layers in the prostate and periprostatic regions. MATERIALS AND METHODS: We used four fresh frozen cadavers in this trial. Anatomical layers of anterior rectus fascia and abdominal rectus muscle were dissected to reach the retropubic area. Prostate, visceral and parietal pelvic fascia, levator ani muscle and puboprostatic ligaments were identified...
November 4, 2017: Urology Journal
https://www.readbyqxmd.com/read/29094029/novel-anal-sphincter-saving-procedure-with-partial-excision-of-levator-ani-muscle-in-rectal-cancer-invading-ipsilateral-pelvic-floor
#5
Gyoung Tae Noh, Jeonghee Han, Chinock Cheong, Yoon Dae Han, Nam Kyu Kim
Purpose: Tumors at the level of the anorectal junction had required total levator-ani muscle excision to achieve an adequate resection margin. However, in the cases of tumor invading ipsilateral levator-ani muscle and intact external sphincter, en bloc resection of rectum with levator-ani muscle including tumor would be possible. This hemilevator excision (HLE) technique enables preserving the anal sphincter function while obtaining oncologic clearance and avoiding permanent colostomy in those patients...
October 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29068554/internal-anal-sphincter-nerves-a-macroanatomical-and-microscopic-description-of-the-extrinsic-autonomic-nerve-supply-of-the-internal-anal-sphincter
#6
S Stelzner, M Böttner, J Kupsch, W Kneist, P Quirke, N P West, H Witzigmann, T Wedel
BACKGROUND: The internal anal sphincter (IAS) contributes substantially to anorectal functions. While its autonomic nerve supply has been studied at the microscopic level, little information is available concerning the macroscopic topography of extrinsic nerve fibres. This study was designed to identify neural connections between the pelvic plexus and the IAS, provide a detailed topographical description, and give histological proof of autonomic nerve tissue. METHODS: Macroscopic dissection of pelvic autonomic nerves was performed under magnification in seven (5 males, 2 females) hemipelvises obtained from body donors (67-92 years)...
October 25, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/29032918/adults-with-22q11-2-deletion-syndrome-have-a-different-velopharyngeal-anatomy-with-predisposition-to-velopharyngeal-insufficiency
#7
Charles Filip, Davide Impieri, Ingegerd Aagenæs, Corstiaan Breugem, Hans Erik Høgevold, Tone Særvold, Ragnhild Aukner, Kari Lima, Kim Tønseth, Tore G Abrahamsen
AIM: To find out if subjects with 22q11.2 deletion syndrome (DS) have a different velopharyngeal anatomy which could cause velopharyngeal insufficiency (VPI). METHODS: A prospective study of 16 subjects >16 years of age with 22q11.2 DS, without overt cleft palate and without previous VPI surgery, and 48 healthy controls >18 years of age were included in the study. Speech was recorded and scored blindly by two independent senior speech therapists. All 64 individuals had MRI scans, which were analyzed blindly by a consultant radiologist...
September 22, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29026970/determination-of-the-amount-of-ptosis-correction-in-levator-resection-surgery-for-pediatric-congenital-ptosis
#8
Chang Yeom Kim, Sang Yeul Lee
BACKGROUND: It is difficult to determine the amount of eyelid lift in levator resection surgery for congenital ptosis, especially when the surgery is performed under general anesthesia. We aim to introduce an objective and steady method with which to adjust eyelid height, and to identify other factors to be considered during surgery. METHODS: This is a retrospective, observational study of 110 eyes from 78 patients who underwent levator resection surgery for congenital ptosis...
October 12, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29026936/a-comparative-study-of-full-thickness-blepharotomy-versus-transconjunctival-eyelid-lengthening-in-the-correction-of-upper-eyelid-retraction-in-graves-orbitopathy
#9
Allan C Pieroni Gonçalves, Thiago Nogueira, Ana Carolina Arato Gonçalves, Luzia Diegues Silva, Suzana Matayoshi, Mário L R Monteiro
BACKGROUND: The study was designed to compare the outcome of full-thickness blepharotomy and transconjunctival eyelid lengthening in the correction of upper eyelid retraction (UER) in patients with Graves' orbitopathy (GO). METHODS: This is a prospective randomized interventional study. Following ophthalmic examination, determination of the ocular surface disease index (OSDI) and photography, 27 patients with UER were randomly assigned to either graded full-thickness blepharotomy (G1) or transconjunctival Müller muscle recession and graded disinsertion of the levator palpebrae superioris muscle (G2)...
October 12, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29024196/pelvic-floor-muscle-assessment-at-3-and-4-dimensional-transperineal-ultrasound-in-women-with-endometriosis-with-or-without-retroperitoneal-infiltration-a-step-towards-complete-functional-assessment
#10
Mohamed Mabrouk, Diego Raimondo, Simona Del Forno, Federica Baruffini, Alessandro Arena, Arianna Benfenati, Aly Youssef, Valentina Martelli, Renato Seracchioli
OBJECTIVES: Previous studies, comparing women with deep infiltrating endometriosis (DIE) and healthy controls, underlined an association between pelvic floor muscle (PFM) hypertonic dysfunction and deep lesions. The aim of the study is to compare the morphometry of pelvic floor muscle (PFM) in women affected by ovarian endometriosis with or without DIE, to assess the impact of retroperitoneal infiltration by the disease on PFM function. METHODS: A prospective study was conducted between March 2015 to December 2016 on symptomatic women with clinical and sonographic diagnosis of ovarian endometriosis with or without DIE, submitted to laparoscopic surgery...
October 11, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29016507/cadaveric-nerve-and-artery-proximity-to-sacrospinous-ligament-fixation-sutures-placed-by-a-suture-capturing-device
#11
Aaron Z Katrikh, Rajuno Ettarh, Margie A Kahn
OBJECTIVE: To simulate sacrospinous ligament fixation on cadaveric specimens, describe the surrounding retroperitoneal anatomy, and estimate the risk to nerves and arteries for the purposes of optimizing safe suture placement. METHODS: Sacrospinous ligament fixation was performed on eight fresh-tissue female cadavers using a Capio ligature capture device. Distances from placed sutures to the following structures were measured: ischial spine; fourth sacral root; pudendal nerve; the nerve to coccygeus muscle; the nerve to levator ani muscle; inferior gluteal artery; and internal pudendal artery...
November 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28988909/detailed-muscular-structure-and-neural-control-anatomy-of%C3%A2-the-levator-ani-muscle-a-study-based-on-female-human%C3%A2-fetuses
#12
Krystel Nyangoh Timoh, David Moszkowicz, Mazen Zaitouna, Cedric Lebacle, Jelena Martinovic, Djibril Diallo, Maud Creze, Vincent Lavoue, Emile Darai, Gérard Benoit, Thomas Bessede
BACKGROUND: Injury to the levator ani muscle or pelvic nerves during pregnancy and vaginal delivery is responsible for pelvic floor dysfunction. OBJECTIVE: We sought to demonstrate the presence of smooth muscular cell areas within the levator ani muscle and describe their localization and innervation. STUDY DESIGN: Five female human fetuses were studied after approval from the French Biomedicine Agency. Specimens were serially sectioned and stained by Masson trichrome and immunostained for striated and smooth muscle, as well as for somatic, adrenergic, cholinergic, and nitriergic nerve fibers...
October 6, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28982971/sound-production-mechanism-in-pomatoschistus-pictus
#13
Eric Parmentier, Maud Petrinisec, Paulo J Fonseca, M Clara P Amorim
Fish acoustic signals play a major role during agonistic and reproductive interactions. Among the sound-generating fish, Gobiidae, a large fish taxa with 1866 valid species, is one of the most studied groups of acoustic fishes with sound production being documented in a number of species. Paradoxically, the sound producing mechanism remains poorly studied in this group. The painted goby Pomatoschistus pictus produces two distinct sounds called drums and thumps. A combination of morphological and experimental analyses involving high-speed videos synchronized with sound recordings supports that drums are produced during lateral head movements involving at least the alternate contractions of the muscles levator pectoralis originating on the skull and inserting on the pectoral girdle...
October 5, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28982687/dlx5-fgf10-signaling-cascade-controls-cranial-neural-crest-and-myoblast-interaction-during-oropharyngeal-patterning-and-development
#14
Hideki Sugii, Alexandre Grimaldi, Jingyuan Li, Carolina Parada, Thach Vu-Ho, Jifan Feng, Junjun Jing, Yuan Yuan, Yuxing Guo, Hidefumi Maeda, Yang Chai
Craniofacial development depends on cell-cell interactions, coordinated cellular movement and differentiation under the control of regulatory gene networks, which include the distal-less (Dlx) gene family. However, the functional significance of Dlx5 in patterning the oropharyngeal region has remained unknown. Here we show that loss of Dlx5 leads to a shortened soft palate and an absence of the levator veli palatini, palatopharyngeus, and palatoglossus muscles that are derived from the 4(th) pharyngeal arch (PA), but the tensor veli palatini, derived from the 1(st) PA, is unaffected...
October 5, 2017: Development
https://www.readbyqxmd.com/read/28959510/variant-prevertebral-muscle-unique-cadaveric-findings
#15
Jocelyn R Gonzales, Joe Iwanaga, Rod J Oskouian, R Shane Tubbs
The levator scapulae muscle typically runs from the transverse process of the atlas to the superior angle of the scapula. In this paper, we describe a rare finding identified during a dissection of a male cadaver, wherein a continuation of the right levator scapulae ran past its normal attachment to the C1 transverse process, fusing with the inferior attachment of the rectus capitis lateralis muscle. No variants were found on the opposite side, and the innervation of the levator scapulae muscle variant was typical of that of a normal levator scapulae...
July 25, 2017: Curēus
https://www.readbyqxmd.com/read/28953147/levator-palpebrae-superioris-muscle-direct-neurotization
#16
Alexánder Cárdenas-Mejía, Damián Palafox, Daniela Téllez-Palacios, Sara Contreras-Merida, Lilia de La Maza-Krzeptowsky, Rubén López, Tzilacatzin Hernández
Direct muscle neurotization has been proved to be a feasible technique for facial reanimation microsurgical procedures. Direct muscle neurotization is performed by implanting the interposition nerve graft directly into the substance of the muscle. The authors present the case of a 36-year-old male patient with upper eyelid dysfunction secondary to facial trauma. The levator palpebrae superioris muscle was macroscopically unaffected; however, neurophysiological test proved a selective denervation of the CN III motor branch to the levator palpebrae superioris muscle...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28948372/comparative-anatomy-on-3-d-mri-of-the-urogenital-sinus-and-the-periurethral-area-before-and-during-the-second-stage-of-labor-during-childbirth
#17
Jean-Christophe Maran, Lucie Cassagnes, Vincent Delmas, Dominique Musset, René Frydman, Gérard Mage, Michel Canis, Louis Boyer, Olivier Ami
PURPOSE OF THE STUDY: To describe the observable MRI changes in the urogenital sinus during the second stage of labor and delivery by comparing the changes in the positions of the anatomical structures of the maternal perineum using MRI-based vector 3-D models. MATERIALS AND METHODS: Seven pregnant women underwent 3-D MRI sequences using a Philips 1 T Panorama open MRI during the pre-labor period and during the second stage of labor. A 3-D vector reconstruction platform (BABYPROGRESS, France) enabled the transformation of volumes of 2-D images into finite element meshes...
September 26, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28905802/coccygodynia-pathogenesis-diagnostics-and-therapy-review-of-the-writing
#18
Bogumiła Dampc, Krzysztof Słowiński
Coccygodynia is a problem with a small percentage (1%) of the population suffering from musculoskeletal disorders. This pain is often associated with trauma, falling on the tailbone, long cycling, or by women after childbirth. The reason for the described problem can be the actual morphological changes. Idiopathic coccygodynia causes therapeutic difficulties to specialists of many fields. Unsatisfactory treatment, including coccygectomy tends to seek new solutions. They belong to them techniques exploited in the manual therapy which in their spectrum hold: direct techniques - per rectum as well as indirect techniques taking into account distant structures of the motor organ, remaining in dense interactions with the coccygeal part...
August 31, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28894152/combination-of-tomographic-ultrasound-imaging-and-three-dimensional-magnetic-resonance-imaging-based-model-to-diagnose-postpartum-levator-avulsion
#19
Yulin Yan, Chaoran Dou, Xia Wang, Yan Xi, Bing Hu, Li Ma, Tao Ying
Vaginal delivery may cause levator avulsion, which may increase the risk of pelvic floor dysfunction (PFD). To explore the morphological changes of the levator ani muscle (including the puborectalis and iliococcygeus) and levator avulsion after vaginal delivery, translabial tomographic ultrasound imaging (TUI) was used to examine 80 women 45-60 days after their vaginal delivery. Subsequently, magnetic resonance imaging (MRI) was performed if at least one-sided puborectalis avulsion was found on TUI. The incidence of puborectalis avulsion in these postpartum women was 13...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891039/a-systematic-review-of-transabdominal-levator-division-during-abdominoperineal-excision-of-the-rectum-aper
#20
D L H Baird, C Simillis, C Kontovounisios, Q Sheng, S Nikolaou, W L Law, S Rasheed, P P Tekkis
BACKGROUND: The aim of the present study was to evaluate the surgical technique, short-term oncological and perioperative outcomes for the transabdominal division of the levator ani muscles during abdominoperineal excision of the rectum (APER). METHODS: A systematic review was performed to identify studies reporting on transabdominal division of the levator ani during APER. A comprehensive literature search was performed using a combination of free-text terms and controlled vocabulary when applicable on the following databases: MEDLINE, EMBASE, Science Citation Index Expanded and Cochrane Central Register of Controlled Trials in the Cochrane Library...
September 2017: Techniques in Coloproctology
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