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Levator muscle

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https://www.readbyqxmd.com/read/28625531/the-extended-bundle-of-the-tensor-veli-palatini-anatomic-consideration-of-the-dilating-mechanism-of-the-eustachian-tube
#1
Ryuhei Okada, Satoru Muro, Kohtaro Eguchi, Kohei Yagi, Hisayo Nasu, Kumiko Yamaguchi, Koh Miwa, Keiichi Akita
OBJECTIVE: The aim of this study was to analyze the topographical structures of the muscles surrounding the Eustachian tube. MATERIALS AND METHODS: We conducted macroscopic and histological studies of 24 halves of 12 heads from Japanese cadavers. RESULTS: The main findings were as follows: 1) the infero-lateral muscle bundles of the tensor veli palatini didn't turn medially at the pterygoid hamulus but were distributed laterally and continuous with the buccinator; 2) the tensor veli palatini attached laterally to the membranous part of the Eustachian tube; 3) the superior pharyngeal constrictor was not only adjacent to the buccinator at the pterygomandibular raphe but also had muscular continuation with it laterally and 4) some bundles of the superior pharyngeal constrictor adhered with the palatine aponeurosis...
June 15, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28624916/interethnic-variation-in-pelvic-floor-morphology-in-women-with-symptomatic-pelvic-organ-prolapse
#2
Zeelha Abdool, Hans Peter Dietz, Barend Gerhardus Lindeque
INTRODUCTION AND HYPOTHESIS: There is a lack of epidemiological studies evaluating female pelvic organ prolapse in developing countries. Current studies have largely focused on women of white ethnicity. This study was designed to determine interethnic variation in pelvic floor functional anatomy, namely, levator hiatal distensibility and pelvic organ descent, in women with symptomatic pelvic organ prolapse in a multi-ethnic South African population. METHODS: This prospective observational study included 258 consecutive women referred for pelvic organ prolapse assessment and management at a tertiary urogynaecological clinic...
June 17, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28621277/botulinum-toxin-for-the-treatment-of-gummv-smile
#3
Afnan F Al-Fouzan, Lamia S Mokeem, Reem T Al-Saqat, Maisa A Alfalah, Mana A Alharbi, Abdullah E Al-Samary
AIM: The aim was to evaluate the effect of botulinum toxin (Botox) injections as a conservative treatment for gummy smile. MATERIALS AND METHODS: An experimental in vivo study was conducted at a dermatology clinic in Riyadh in January 2016. The study included 23 female patients who ranged from 20 to 50 years and were treated with Botox injections due to excessive maxillary gingival display. The patients with short clinical crowns or long maxilla, those who were pregnant or breastfeeding, and patients with neuromuscular disorders were excluded...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28620795/levator-ani-defects-and-the-severity-of-symptoms-in-women-with-anterior-compartment-pelvic-organ-prolapse
#4
Sissel H Oversand, Anne C Staff, Leiv Sandvik, Ingrid Volløyhaug, Rune Svenningsen
INTRODUCTION AND HYPOTHESIS: The aims of this study were to evaluate the prevalence of levator ani muscle (LAM) avulsions in a selected cohort of patients with primary anterior compartment pelvic organ prolapse (POP) and to assess whether LAM avulsions, as an independent factor, affect the degree of POP symptoms and sexual dysfunction. Additionally, clinical and demographic variables of women with and those without avulsions were compared. METHODS: We carried out a cross-sectional analysis of a prospective cohort study including 197 women scheduled for anterior compartment POP surgery...
June 15, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28601797/ptosis-as-a-complication-of-kawasaki-disease
#5
Ammar Hameed, Hassan Alshara, Thomas Schleussinger
Kawasaki disease is an acute febrile exanthematous disease that affects children younger than 5 years of age. It is regarded as the most common cause of childhood acquired heart disease, but ocular and neurological problems are among the other important clinical findings. We present a 3-year-old boy who developed bilateral ptosis on day 21, 5 days after intravenous immunoglobulin. The ptosis was due to bilateral paralysis of the levator palpebrae superioris muscles and resolved spontaneously on day 25. There were no cardiac sequelae...
June 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28598517/impact-of-episiotomy-on-the-urogenital-hiatus-using-transperineal-ultrasound
#6
Jordi Cassadó Garriga, Ana Carmona Ruiz, Antoni Pessarrodona Isern, Monica Rodríguez Carballeira, Esther Esteve Serena, Pablo García Manau, Marta Valls Esteve, Eva Huguet Galofré
AIMS: To analyze whether episiotomy affects the urogenital hiatal area and the difference in the hiatus at rest and during contraction, as an indirect measurement of the contractile capacity of the levator ani muscle. METHODS: We performed an observational, comparative, retrospective study of primiparous women who had normal vaginal deliveries. The urogenital hiatal area was compared in women with and without episiotomy. All women underwent transperineal ultrasound scanning after delivery, and all the images were analyzed offline by the principal investigator who was blinded to all clinical data...
June 9, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28597315/fiber-type-distribution-in-insect-leg-muscles-parallels-similarities-and-differences-in-the-functional-role-of-insect-walking-legs
#7
Elzbieta Godlewska-Hammel, Ansgar Büschges, Matthias Gruhn
Previous studies have demonstrated that myofibrillar ATPase (mATPase) enzyme activity in muscle fibers determines their contraction properties. We analyzed mATPase activities in muscles of the front, middle and hind legs of the orthopteran stick insect (Carausius morosus) to test the hypothesis that differences in muscle fiber types and distributions reflected differences in their behavioral functions. Our data show that all muscles are composed of at least three fiber types, fast, intermediate and slow, and demonstrate that: (1) in the femoral muscles (extensor and flexor tibiae) of all legs, the number of fast fibers decreases from proximal to distal, with a concomitant increase in the number of slow fibers...
June 8, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28578252/stretching-position-can-affect-levator-scapular-muscle-activity-length-and-cervical-range-of-motion-in-people-with-a-shortened-levator-scapulae
#8
Hyo-Jung Jeong, Heon-Seock Cynn, Chung-Hwi Yi, Jang-Whon Yoon, Ji-Hyun Lee, Tae-Lim Yoon, Bo-Been Kim
OBJECTIVES: Levator scapulae (LS) muscle stretching exercises are a common method of lengthening a shortened muscle; however, the appropriate stretching position for lengthening the LS in people with a shortened LS remains unclear. The purpose of this study was to compare the effects of different stretching exercise positions on the LS and introduce effective stretching exercise methods to clinicians. PARTICIPANTS: Twenty-four university students (12 men, 12 women) with a shortened LS were recruited...
April 4, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28571110/a-new-teaching-model-for-demonstrating-the-movement-of-the-extraocular-muscles
#9
Joe Iwanaga, Jason Refsland, Lee Iovino, Gary Holley, Tyler Laws, Rod J Oskouian, R Shane Tubbs
The extraocular muscles consist of the superior, inferior, lateral, and medial rectus muscles and the superior and inferior oblique muscles. This study aimed to create a new teaching model for demonstrating the function of the extraocular muscles. A coronal section of the head was prepared and sutures attached to the levator palpebral superioris muscle and six extraocular muscles. Tension was placed on each muscle from a posterior approach and movement of the eye documented from an anterior view. All movements were clearly seen less than that of the inferior rectus muscle...
June 1, 2017: Clinical Anatomy
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
#10
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/28538580/what-s-new-in-cleft-palate-and-velopharyngeal-dysfunction-management
#11
Sanjay Naran, Matthew Ford, Joseph E Losee
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Have a clear understanding of the evolution of concepts of velopharyngeal dysfunction, especially as it relates to patients with a cleft palate. 2. Explain the subjective and objective evaluation of speech in children with velopharyngeal dysfunction. 3. On the basis of these diagnostic findings, be able to classify types of velopharyngeal dysfunction. 4. Develop a safe, evidence-based, patient-customized treatment plan for velopharyngeal dysfunction founded on objective considerations...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28531312/taste-elicited-activity-in-facial-muscle-regions-in-5-8-week-old-infants
#12
Jessica E Armstrong, David G Laing, Anthony L Jinks
The state of development of the sense of taste in humans during the first few months of life is only partially understood. Since taste plays a critical role in the feeding and nutrition of infants a better understanding of taste development during early life is required. Currently, information about the sense of taste in pre-verbal infants is obtained by analysis of videotaped facial expressions using the Baby FACS coding system. A potentially more objective faster procedure for assessing facial expressions not investigated in infants is electromyography (EMG)...
June 1, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28529498/eyelid-retraction-in-isolated-unilateral-congenital-blepharoptosis
#13
Michael S Salman, Ian H Clark
Isolated unilateral congenital ptosis is encountered relatively infrequently in clinical practice. It typically consists of a unilateral droopy eyelid, weak levator palpebrae superioris muscle function, lid lag, and an absent upper lid crease with no other abnormalities on examination. We present a four-and-a-half-year-old girl with isolated and mild unilateral congenital ptosis who unexpectedly demonstrated a static upper eyelid on downgaze in conjunction with a well-formed upper lid skin crease. We attribute this uncommon sign in congenital ptosis to stiffness and presumed fibrosis of the levator muscle...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28510774/combined-surgery-for-simultaneous-treatment-of-congenital-ptosis-and-coexisting-strabismus
#14
Feng Zhou, Ming Ouyang, Dahui Ma, Guiqin Liu, Hongbo Cheng
PURPOSE: To evaluate the clinical outcomes of single-stage surgery for treatment of patients with congenital ptosis and coexisting strabismus. METHODS: A retrospective analysis was performed on 10 patients (17 eyes) with congenital ptosis and coexisting strabismus. Patients were treated with levator resection or frontalis suspension for ptosis and ocular muscle surgery for strabismus, performed as a single-stage procedure. Levator resection was performed in 9 patients (15 eyes) and frontalis muscle flap suspension was performed in 1 patient (2 eyes) with blepharophimosis...
May 15, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28509338/investigation-of-the-ischioanal-fossa-application-to-abscess-spread
#15
Jian-Fei Zhang, Mei-Ling Du, Hong-Jin Sui, Yong Yang, Huan-Yu Zhou, Chao Meng, Mei-Jing 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 1 cm 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/28508263/new-insights-into-the-anatomy-of-the-midface-musculature-and-its-implications-on-the-nasolabial-fold
#16
Chelsea C Snider, Ashley N Amalfi, Lauren E Hutchinson, Nicole Z Sommer
BACKGROUND: The prominent nasolabial fold is a distinct feature of the aging midface. As minimally invasive procedures have become mainstream, chemodenervation is a preferred method for treating dynamic facial rhytids. We therefore sought to identify relevant nasolabial fold and midfacial muscular anatomy to determine the ideal location of neuromodulation to improve the aesthetics of the midface and nasolabial fold without altering the upper lip and smile. METHODS: Twelve hemifacial cadaveric dissections were performed to identify midface muscle origin, insertion, width, vector of pull, and neighboring structures...
May 15, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28504114/a-shortened-tamoxifen-induction-scheme-to-induce-creer-recombinase-without-side-effects-on-the-male-mouse-skeleton
#17
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
#18
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/28463058/generating-facial-expressions-of-disgust-activates-neurons-in-the-thoracic-spinal-cord-a-spinal-fmri-study
#19
Stephen D Smith, Jennifer Kornelsen, Theresa A McIver
Facial expressions of disgust, which involve movement of the levator labii muscles on the nose, allow an organism to restrict the intake of potentially aversive stimuli by constricting the air cavities in the nostrils and reducing the speed of air intake. In the current research, we used fMRI of the thoracic spinal cord to measure neural activity related to (1) the contraction of the intercostal muscles that modulate the velocity of air intake and (2) the sensory feedback associated with this contraction. Thirteen participants completed two spinal fMRI runs in which the thoracic segments of the spinal cord were measured...
May 8, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/28455942/the-evaluation-of-pelvic-floor-muscle-strength-in-women-with-pelvic-floor-dysfunction-a-reliability-and-correlation-study
#20
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
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