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https://www.readbyqxmd.com/read/29040033/lower-eyelid-entropion-repair-with-retractor-mobilization-and-insertion-onto-the-anterior-surface-of-the-tarsal-plate
#1
Dnyaneshwar D Athavale, Brett A O'donnell
PURPOSE: To evaluate a modified surgical technique for the correction of lower eyelid involutional entropion in terms of recurrence rate and relief of symptoms. METHOD: A prospective series of 67 consecutive eyelids in 55 patients who underwent lower eyelid entropion repair using a modified surgical approach not previously published in the literature to the authors' knowledge. The surgical technique, via a skin crease incision, involves disinsertion of the lower eyelid retractors from the tarsus and conjunctiva and suturing the retractors onto the anterior surface of the tarsal plate...
October 17, 2017: Orbit
https://www.readbyqxmd.com/read/29033362/an-effective-feedback-loop-between-cell-cell-contact-duration-and-morphogen-signaling-determines-cell-fate
#2
Vanessa Barone, Moritz Lang, S F Gabriel Krens, Saurabh J Pradhan, Shayan Shamipour, Keisuke Sako, Mateusz Sikora, Călin C Guet, Carl-Philipp Heisenberg
Cell-cell contact formation constitutes an essential step in evolution, leading to the differentiation of specialized cell types. However, remarkably little is known about whether and how the interplay between contact formation and fate specification affects development. Here, we identify a positive feedback loop between cell-cell contact duration, morphogen signaling, and mesendoderm cell-fate specification during zebrafish gastrulation. We show that long-lasting cell-cell contacts enhance the competence of prechordal plate (ppl) progenitor cells to respond to Nodal signaling, required for ppl cell-fate specification...
October 11, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29028622/virtual-reality-balance-training-for-elderly-similar-skiing-games-elicit-different-challenges-in-balance-training
#3
Aijse W de Vries, Gert Faber, Ilse Jonkers, Jaap H Van Dieen, Sabine M P Verschueren
BACKGROUND: Virtual Reality (VR) balance training may have advantages over regular exercise training in older adults. However, results so far are conflicting potentially due to the lack of challenge imposed by the movements in those games. Therefore, the aim of this study was to assess to which extent two similar skiing games challenge balance, as reflected in center of mass (COM) movements relative to their Functional Limits of Stability (FLOS). METHODS: Thirty young and elderly participants performed two skiing games, one on the Wii Balance board (Wiiski), which uses a force plate, and one with the Kinect sensor (Kinski), which performs motion tracking...
October 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29023609/thickness-of-the-buccal-plate-in-posterior-teeth-a-prospective-cone-beam-computed-tomography-study
#4
Kayleigh Eaves Temple, John Schoolfield, Marcel E Noujeim, Guy Huynh-Ba, David J Lasho, Brian L Mealey
Buccal plate thickness is an important clinical parameter for postextraction implant treatment planning. The purpose of this study was to assess buccal plate thickness of the posterior maxilla and mandible using cone beam computed tomography (CBCT). A total of 265 patients and 934 teeth met the inclusion criteria for this study. CBCT volumes were taken and aligned for measurement at the ideal midsagittal cross-section. Buccal plate thickness was measured at 1, 3, and 5 mm apical to the alveolar crest. The frequency of thick (≥ 1 mm), thin (< 1 mm), and radiographic absence of the buccal plate were determined...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29021657/results-of-tubularized-urethral-plate-urethroplasty-in-megameatus-intact-prepuce
#5
Amilal Bhat, Mahakshit Bhat, Akshita Bhat, Vikash Singh
OBJECTIVE: The megameatus variant of anterior hypospadias with an intact complete foreskin occurs in approximately 1%-3% of hypospadias. Hence, the objective of the study was to evaluate the results of tubularized urethral plate urethroplasty (TUPU) in megameatus intact prepuce (MIP). MATERIALS AND METHODS: A retrospective study (June 1996-June 2015) of MIP from our hypospadias registry was conducted. All patients with megameatus, either with an intact prepuce or with one previously removed, were included in the study...
October 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29018320/virtual-balancing-for-studying-and-training-postural-control
#6
Daniela Buettner, Daniela Dalin, Isabella K Wiesmeier, Christoph Maurer
Postural control during free stance has been frequently interpreted in terms of balancing an inverted pendulum. This even holds, if subjects do not balance their own, but an external body weight. We introduce here a virtual balancing apparatus, which produces torque in the ankle joint as a function of ankle angle resembling the gravity and inertial effects of free standing. As a first aim of this study, we systematically modified gravity, damping, and inertia to examine its effect on postural control beyond the physical constraints given in the real world...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29016435/comparison-of-outcomes-for-anterior-cervical-discectomy-and-fusion-with-and-without-anterior-plate-fixation-a-systematic-review-and-meta-analysis
#7
Jeremie D Oliver, Sandy Goncalves, Panagiotis Kerezoudis, Mohammed Ali Alvi, Brett A Freedman, Ahmad Nassr, Mohamad Bydon
STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVE: To compare postoperative surgical, radiographic and patient-reported outcomes following ACDF with and without plate fixation. SUMMARY OF BACKGROUND DATA: Anterior cervical discectomy and fusion (ACDF) has evolved significantly over the years, including the placement of an anterior plate construct. Although promoting bony osseo-integration at the fusion site, there are a number of plate-related complications that can arise...
October 9, 2017: Spine
https://www.readbyqxmd.com/read/28994332/ultrasonography-findings-and-physical-examination-outcomes-in-dancers-with-and-without-patellofemoral-pain
#8
Itzhak Siev-Ner, Myriam D Stern, Shay Tenenbaum, Alexander Blankstein, Aviva Zeev, Nili Steinberg
OBJECTIVES: To identify whether a physical examination for patello-femoral pain (PFP) is related to ultrasonography findings at the knee, and to identify possible factors related to PFP in young dancers. METHODS: Sixty-seven young female dancers (7th grade, aged 12.8±0.5) from three schools with identical special dance programs were included in the study. All the dancers were interviewed for demographic details, dance background, and training intensity; were evaluated for anthropometric measurements; underwent physical examination of both knees for PFP and for knee range of motion (ROM); and, had ultrasonography assessment for pathologies and of anatomical parts of their knees...
October 10, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28992521/morphology-and-phylogeny-of-the-testate-amoebae-euglypha-bryophila-brown-1911-and-euglypha-cristata-leidy-1874-rhizaria-euglyphida
#9
Andrey N Tsyganov, Anastasia V Shatilovich, Anton S Esaulov, Viktor A Chernyshov, Natalia G Mazei, Elena A Malysheva, Yuri A Mazei
The genus Euglypha contains the largest number of filose testate amoeba taxa which were mainly described based on the morphological characteristics of shells. Despite the increasing amount of molecular data, the phylogenetic relationships within the genus Euglypha remain unresolved. In this work we provide new data on SSU rRNA gene sequences, light and electron microscopy for the two euglyphid species Euglypha bryophilaBrown, 1911 and Euglypha cristataLeidy, 1874. Both species are characterised by the presence of a turf of spines on the aboral pole of the shells but differ in shell cross sections (elliptical and circular, respectively)...
September 18, 2017: European Journal of Protistology
https://www.readbyqxmd.com/read/28989848/biomechanical-stability-of-a-stand-alone-interbody-spacer-in-two-level-and-hybrid-cervical-fusion-constructs
#10
Daniel G Kang, Scott C Wagner, Robert W Tracey, John P Cody, Rachel E Gaume, Ronald A Lehman
STUDY DESIGN: In vitro human cadaveric biomechanical analysis. OBJECTIVE: To evaluate the segmental stability of a stand-alone spacer (SAS) device compared with the traditional anterior cervical plate (ACP) construct in the setting of a 2-level cervical fusion construct or as a hybrid construct adjacent to a previous 1-level ACP construct. METHODS: Twelve human cadaveric cervical spines (C2-T1) were nondestructively tested with a custom 6-degree-of-freedom spine simulator under axial rotation (AR), flexion-extension (FE), and lateral bending (LB) at 1...
October 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28988312/contamination-occurs-during-acl-graft-harvesting-and-manipulation-but-it-can-be-easily-eradicated
#11
Daniel Pérez-Prieto, María E Portillo, Raúl Torres-Claramunt, Xavier Pelfort, Pedro Hinarejos, Joan C Monllau
PURPOSE: Why anterior cruciate ligament (ACL) autograft soaking in a 5 mg/ml vancomycin solution decreases the rate of infection has not been well-explained. One hypothesis is that grafts can be contaminated during harvesting and vancomycin eradicates the bacteria. The purpose of the present study is to assess how the vancomycin solution acts against ACL graft contamination during graft harvesting and preparation. METHODS: The study was carried out in three university hospitals over a period of 6 months...
October 7, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28988275/risk-factors-and-preventative-measures-of-early-and-persistent-dysphagia-after-anterior-cervical-spine-surgery-a-systematic-review
#12
REVIEW
Jingwei Liu, Yong Hai, Nan Kang, Xiaolong Chen, Yangpu Zhang
PURPOSE: To conduct a systematic review of literature to determine risk factors and preventative measures of early and persistent dysphagia after anterior cervical spine surgery (ACSS). METHODS: On March 2017, we searched the database PubMed, Medline, EMBASE, the Cochrane library, Clinical key, Springer link and Wiley Online Library without time restriction using the term 'dysphagia', 'swallowing disorders', and 'anterior cervical spine surgery'. Selected papers were examined for the level of evidence by published guidelines as level I, level II, level III, level IV studies...
October 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28987856/comparison-of-chronic-dysphagia-in-standalone-versus-conventional-plate-and-cage-fusion
#13
Christian Fisahn, Cameron Schmidt, Tarush Rustagi, Marc Moisi, Joe Iwanaga, Daniel C Norvell, R Shane Tubbs, Thomas A Schildhauer, Jens R Chapman
INTRODUCTION: Standalone cages have gained popularity due to their ease of implantation, reduced operating time, and lower profile compared to traditional plate and cage systems. The aim of this study was to compare the risk of chronic dysphagia among those who undergo ACDF with traditional plating techniques versus standalone systems. MATERIAL AND METHODS: Between 2014 and 2015, we identified 377 consecutive patients meeting study criteria (standalone, n= 211; plate-cage, n= 166)...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28986227/anterior-cervical-discectomy-with-instrumented-allograft-fusion-lordosis-restoration-and-comparison-of-functional-outcomes-among-patients-of-different-age-groups
#14
Dario Muzevic, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE: To investigate clinical parameters of anterior cervical discectomy and fusion (ACDF) treatment and outcomes using osseous allograft in different age groups, study postoperative results of restoring of lordosis, and evaluate the utility of bone allografts for ACDF, including graft subsidence. METHODS: We reviewed data from 154 patients having clinical symptoms and radiological signs of disc herniation and/or cervical spondylosis. Decompression was achieved through discectomy, osteophyte ablation, endplate drilling, and foraminotomy...
October 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28984171/aberrant-sylvian-vein-a-newly-described-cause-of-pulsatile-tinnitus
#15
Zhaohui Liu, Jingge Yu, Pengfei Zhao, Hanjuan Zhang, Qian Wang, Zhenchang Wang
We herein report a newly described cause of venous pulsatile tinnitus: protrusion of an aberrant sylvian vein into the tympanum. A 60-year-old woman presented with a 4-month history of objective persistent pulsatile tinnitus in the right ear with no other complaints. The pulsatile tinnitus diminished with rotation of the head to the right side or by compression of the right cervical vascular structures. The frequency and intensity of the tinnitus were 125 Hz and 20 dB HL, respectively. Audiometry and otoscopic examination findings were normal...
October 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28974461/bone-replaces-articular-cartilage-in-the-rat-knee-joint-after-prolonged-immobilization
#16
T M Campbell, K Reilly, O Laneuville, H Uhthoff, G Trudel
BACKGROUND: Lost joint range of motion (ROM) is common in chronic osteoarthritis, alters regional weight-bearing across the articular surfaces, and contributes to loss of cartilage and bone alterations. Limited data exist on the regional effects on joints subjected to chronic losses of ROM. OBJECTIVE: To characterize the regional replacement by bone as part of articular cartilage degeneration after prolonged immobilization. METHODS: Eleven rat knees were rigidly-immobilized in flexion for 32weeks with contralateral and sham-operated (n=6) knees as controls...
September 30, 2017: Bone
https://www.readbyqxmd.com/read/28971628/comparative-three-dimensional-morphology-of-baleen-cross-sectional-profiles-and-volume-measurements-using-ct-images
#17
Megan M Jensen, Amalia H Saladrigas, Jeremy A Goldbogen
Baleen whales are obligate filter feeders, straining prey-laden seawater through racks of keratinized baleen plates. Despite the importance of baleen to the ecology and natural history of these animals, relatively little work has been done on baleen morphology, particularly with regard to the three-dimensional morphology and structure of baleen. We used computed tomography (CT) scanning to take 3D images of six baleen specimens representing five species, including three complete racks. With these images, we described the three-dimensional shape of the baleen plates using cross-sectional profiles from within the gum tissue to the tip of the plates...
November 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28967445/the-adult-monteggia-fracture-patterns-and-incidence-of-annular-ligament-incarceration-among-121-cases-at-a-single-institution-over-19-years
#18
Max Hamaker, Amy Zheng, W Andrew Eglseder, Raymond A Pensy
PURPOSE: The purposes of this study were to identify the relative frequency of Monteggia fracture patterns and to investigate the required frequency of open reduction of the proximal radiocapitellar joint. METHODS: We identified 121 Monteggia fractures at a Level I trauma center from 1996 to 2015 and included 119 in this study. These fractures were identified using a database search for the appropriate International Classification of Diseases, Ninth Revision and Current Procedural Terminology codes as well as individual surgeons' logs...
September 26, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28966386/laparoscopic-acetabular-fracture-fixation-after-three-dimensional-modelling-and-printing
#19
Can-Jun Zeng, Wen-Hua Huang, Hua-Jun Huang, Zhang-Lin Wu
Current surgical treatment of acetabular fractures is open reduction and internal fixation and requires a large incision resulting in considerable blood loss and a potentially long duration of recovery. We report a case of an acetabular fracture that received laparoscopic internal fixation after three-dimensional (3D) modelling and printing of the acetabulum. A 43 year old male fell from a height of 3 m resulting in a right acetabulum anterior column fracture. Thin section computed tomography scanning with 0...
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28963160/accuracy-of-ct-navigated-pedicle-screw-positioning-in-the-cervical-and-upper-thoracic-region-with-and-without-prior-anterior-surgery-and-ventral-plating
#20
COMPARATIVE STUDY
A Rienmüller, N Buchmann, J S Kirschke, E L Meyer, J Gempt, J Lehmberg, B Meyer, Y M Ryang
AIMS: We aimed to retrospectively assess the accuracy and safety of CT navigated pedicle screws and to compare accuracy in the cervical and thoracic spine (C2-T8) with (COMB) and without (POST) prior anterior surgery (anterior cervical discectomy or corpectomy and fusion with ventral plating: ACDF/ACCF). PATIENTS AND METHODS: A total of 592 pedicle screws, which were used in 107 consecutively operated patients (210 COMB, 382 POST), were analysed. The accuracy of positioning was determined according to the classification of Gertzbein and Robbins on post-operative CT scans...
October 2017: Bone & Joint Journal
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