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https://www.readbyqxmd.com/read/28529111/the-results-of-total-hip-arthroplasty-after-sugioka-transtrochanteric-anterior-rotational-osteotomy-for-osteonecrosis
#1
Takeshi Utsunomiya, Goro Motomura, Satoshi Ikemura, Satoshi Hamai, Jun-Ichi Fukushi, Yasuharu Nakashima
BACKGROUND: Since Sugioka transtrochanteric anterior rotational osteotomy (ARO) for osteonecrosis of the femoral head (ONFH) changes the morphology of the proximal femur, total hip arthroplasty (THA) after previous ARO is considered a technically demanding procedure. The purpose of this study was to compare the clinicoradiologic outcomes of THA after ARO with those of THA without any antecedent surgery for ONFH. METHODS: Twenty-four hips in 20 patients who underwent cementless THA after ARO (postosteotomy group) were retrospectively reviewed and compared with patients who underwent cementless THA without any antecedent surgery for ONFH during the same period (primary group)...
April 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28527594/whole-globe-biomechanics-using-high-field-mri
#2
Andrew P Voorhees, Leon C Ho, Ning-Jiun Jan, Huong Tran, Yolandi van der Merwe, Kevin Chan, Ian A Sigal
The eye is a complex structure composed of several interconnected tissues acting together, across the whole globe, to resist deformation due to intraocular pressure (IOP). However, most work in the ocular biomechanics field only examines the response to IOP over smaller regions of the eye. We used high-field MRI to measure IOP induced ocular displacements and deformations over the whole globe. Seven sheep eyes were obtained from a local abattoir and imaged within 48 h using MRI at multiple levels of IOP. IOP was controlled with a gravity perfusion system and a cannula inserted into the anterior chamber...
May 17, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28522228/accessory-subscapularis-muscle%C3%A2-%C3%A2-a-forgotten-variation
#3
L A S Pires, C F C Souza, A R Teixeira, T F O Leite, M A Babinski, C A A Chagas
The quadrangular space is a space in the axilla bounded by the inferior margin of the teres minor muscle, the superior margin of the teres major muscle, the lateral margin of the long head of the triceps brachii muscle and the surgical neck of the humerus, medially. The axillary nerve (C5-C6) and the posterior circumflex humeral artery and veins pass through this space in order to supply their territories. The subscapularis muscle is situated into the scapular fossa and inserts itself into the lesser tubercle of the humerus, thus helping stabilize the shoulder joint...
May 15, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28522113/neonatal-glaucoma-associated-with-juvenile-xanthogranuloma-case-report
#4
A Ramos Suárez, I Ayet Roger, A Serra Castanera
CASE REPORT: The case concerns a 22 day-old male child with juvenile xanthogranuloma (JXG), which manifested as a unilateral glaucoma and with fibrinous haemorrhagic exudate in the anterior chamber affecting the angle of the right eye. Despite a high level of suspicion, the definitive diagnosis was not possible until the infant reached the age of 10 months, after the appearance of the skin lesions typical of this condition and histopathological study of them. CONCLUSION: JXG is a rare disease, characterised by yellowish skin lesions on the trunk, neck, or head...
May 15, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28522075/retrospective-analysis-of-proximal-humeral-fracture-dislocations-managed-with-locked-plates
#5
Vivek Trikha, Vivek Singh, Buddhadeb Choudhury, Saubhik Das
BACKGROUND: Fracture-dislocation is the extreme variant of injury to the proximal humerus that occurs more commonly in young adults as a result of high-velocity trauma. We evaluated the functional and radiologic outcome of fixation of proximal humeral fracture-dislocations with locked plates. METHODS: This was a retrospective review of 33 proximal humeral fracture-dislocations in 29 patients with a mean age of 35 years (range, 19-60 years) treated by open reduction and internal fixation with locked plates between January 2009 and December 2013...
May 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28516961/supracricoid-partial-laryngectomy-with-crico-hyoido-epiglottopexy-for-glottic-carcinoma-with-anterior-commissure-involvement
#6
I Atallah, E Berta, A Coffre, J Villa, E Reyt, C A Righini
Glottic cancers discovered at an early stage (T1-T2) can be treated with either radiotherapy or surgery. The aim of our study is to analyse survival and functional results of supra-cricoid partial laryngectomy (SCPL) with crico-hyoido-epiglottopexy (CHEP) as surgical treatment for glottic carcinoma with anterior commissure involvement. We performed a retrospective study (1996-2013) which included patients who underwent SCPL-CHEP for glottic squamous cell carcinoma with involvement of the anterior commissure...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28515675/utility-of-intraoral-stents-in-external-beam-radiotherapy-for-head-and-neck-cancer
#7
Hiroshi Doi, Masao Tanooka, Toshihisa Ishida, Kuniyasu Moridera, Kenji Ichimiya, Kazuo Tarutani, Kazuhiro Kitajima, Masayuki Fujiwara, Hiromitsu Kishimoto, Norihiko Kamikonya
AIM: This study aimed to assess the utility and stability of intraoral stent during intensity-modulated radiation therapy (IMRT). BACKGROUND: The benefits of intraoral stents in radiotherapy are unclear. MATERIALS AND METHODS: We analyzed 386 setup errors in 12 patients who received IMRT for head and neck cancers without intraoral stents (intraoral stent [-]) and 183 setup errors in 6 patients who received IMRT with intraoral stents (intraoral stent [+])...
July 2017: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/28511363/solving-the-mystery-of-the-antero-lateral-ligament
#8
P H Sonia Farhan, Rathi Sudhakaran, Jai Thilak
INTRODUCTION: The cruciate ligaments are essential for the antero-posterior stability of the knee joint. In Anterior Cruciate Ligament (ACL) rupture, though reconstructive surgery is a widely accepted and proven procedure, there is still an unacceptably high re-injury rate. The fact that the rotational instability persists even after the surgical reconstruction of ACL injury has evoked a new interest in the study of the soft tissue structures on the anterolateral aspect of the knee joint...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509824/implant-survival-after-minimally-invasive-anterior-or-anterolateral-vs-conventional-posterior-or-direct-lateral-approach-an-analysis-of-21-860-total-hip-arthroplasties-from-the-norwegian-arthroplasty-register-2008-to-2013
#9
Knut Erik Mjaaland, Svein Svenningsen, Anne Marie Fenstad, Leif I Havelin, Ove Furnes, Lars Nordsletten
BACKGROUND: Since 2008, there has been an increase in the use of minimally invasive surgery (MIS) through an anterior or anterolateral approach for total hip arthroplasty (THA) in Norway. We compared the MIS approaches with the conventional posterior and direct lateral approaches in terms of revision rates and risk of revision. METHODS: On the basis of data in the Norwegian Arthroplasty Register, 21,860 THAs with an uncemented stem, performed between 2008 and 2013, were identified and included in the cohort...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28508034/laminar-localization-and-projection-specific-properties-of-presubicular-neurons-targeting-the-lateral-mammillary-nucleus-thalamus-or-medial-entorhinal-cortex
#10
Li-Wen Huang, Jean Simonnet, Mérie Nassar, Louis Richevaux, Roxanne Lofredi, Desdemona Fricker
The presubiculum (PrS) is part of an interconnected network of distributed brain regions where individual neurons signal the animals heading direction. PrS sends axons to medial entorhinal cortex (MEC), it is reciprocally connected with anterior thalamic nuclei (ATNs), and it sends feedback projections to the lateral mammillary nucleus (LMN), involved in generating the head direction signal. The intrinsic properties of projecting neurons will influence the pathway-specific transmission of activity. Here, we used projection-specific labeling of presubicular neurons to identify MEC-, LMN-, and ATN-projecting neurons in mice...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28506997/the-phosphatase-pgam5-antagonizes-wnt-%C3%AE-catenin-signaling-in-embryonic-anterior-posterior-axis-patterning
#11
Verena Rauschenberger, Dominic B Bernkopf, Sabrina Krenn, Kowcee Jalal, Jens Heller, Jürgen Behrens, Marc Gentzel, Alexandra Schambony
The scaffold protein Dishevelled is a central intracellular component of Wnt signaling pathways. Various kinases have been described that regulate and modulate Wnt signaling through phosphorylation of Dishevelled. However, besides the general protein phosphatases 1 and 2 (PP1 and PP2), no specific protein phosphatases have been identified. Here, we report on the identification and functional characterization of the protein phosphatase Pgam5 in vitro and in vivo Pgam5 is a novel antagonist of Wnt/β-Catenin signaling in human cells and Xenopus embryogenesis...
May 15, 2017: Development
https://www.readbyqxmd.com/read/28506806/selective-associative-phonagnosia-after-right-anterior-temporal-stroke
#12
Simona Luzzi, Michela Coccia, Gabriele Polonara, Carlo Reverberi, Gabriella Ceravolo, Mauro Silvestrini, Fabio Fringuelli, Sara Baldinelli, Leandro Provinciali, Guido Gainotti
We report the case of a 48 year old men who developed a selective impairment in famous voice recognition after ischemic stroke in right subcortical structures (lenticular nucleus and head of the caudate) and right anterior temporal lobe. He underwent fibrinolytic treatment. During the following days he progressively recovered and was discharged without neurological focal sign. Patent foramen ovale was found. When he got back to his house he noticed that he was unable to recognize the voice of his favoured singers and needed to ask who was the singer to his relatives...
May 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28504985/current-opinion-in-otolaryngology-and-head-and-neck-surgery-frontal-sinus-fractures
#13
Robert J Chouake, Brett A Miles
PURPOSE OF REVIEW: The purpose of this manuscript is to review the current literature regarding the management of frontal sinus fractures and offer the authors opinion on the current management of these traumatic injuries. We evaluate recently proposed management algorithms as well as novel surgical approaches reported within the last few years. RECENT FINDINGS: Patient selection for sinus sparing treatment modalities is balanced between fracture severity, involved structures, and reliable patient surveillance...
May 12, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28502658/spontaneous-rapid-odor-source-localization-behavior-requires-interhemispheric-communication
#14
José Esquivelzeta Rabell, Kadir Mutlu, João Noutel, Pamela Martin Del Olmo, Sebastian Haesler
Navigation, finding food sources, and avoiding danger critically depend on the identification and spatial localization of airborne chemicals. When monitoring the olfactory environment, rodents spontaneously engage in active olfactory sampling behavior, also referred to as exploratory sniffing [1]. Exploratory sniffing is characterized by stereotypical high-frequency respiration, which is also reliably evoked by novel odorant stimuli [2, 3]. To study novelty-induced exploratory sniffing, we developed a novel, non-contact method for measuring respiration by infrared (IR) thermography in a behavioral paradigm in which novel and familiar stimuli are presented to head-restrained mice...
May 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28499849/a-geometrically-adjustable-receive-array-for-imaging-marmoset-cohorts
#15
Kyle M Gilbert, Joseph S Gati, L Martyn Klassen, Peter Zeman, David J Schaeffer, Stefan Everling, Ravi S Menon
The common marmoset (Callithrix jacchus) is an increasingly popular animal model for translational neuroscience studies, during which anatomical and functional MRI can be useful investigative tools. To attain the requisite SNR for high-resolution acquisitions, the radiofrequency coil must be optimized for the marmoset; however, relatively few custom coils have been developed that maximize SNR and are compatible with accelerated acquisitions. For the study of large populations of animals, the heterogeneity in animal size reduces the effectiveness of a "one size fits all" approach to coil sizing and makes coils tailored to individual animals cost and time prohibitive...
May 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28499093/the-segond-fracture-is-an-avulsion-of-the-anterolateral-complex
#16
Humza Shaikh, Elmar Herbst, Ata Amir Rahnemai-Azar, Marcio Bottene Villa Albers, Jan-Hendrik Naendrup, Volker Musahl, James J Irrgang, Freddie H Fu
BACKGROUND: The Segond fracture was classically described as an avulsion fracture of the anterolateral capsule of the knee. Recently, some authors have attributed its pathogenesis to the "anterolateral ligament" (ALL). Biomechanical studies that have attempted to reproduce this fracture in vitro have reported conflicting findings. PURPOSE: To determine the anatomic characteristics of the Segond fracture on plain radiographs and magnetic resonance imaging (MRI), to compare this location with the location of the ALL described in prior radiographic and anatomic publications, and to determine the fracture's attachments to the soft tissue anterolateral structures of the knee...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28497451/anterior-greater-trochanteric-muscle-pedicle-bone-grafting-a-viable-graft-option-adjunct-to-hip-osteotomy-or-fracture-surgery
#17
Noppachart Limpaphayom, Phatcharapa Osateerakun, Vajara Wilairatana, Pairatch Prasongchin
INTRODUCTION: The objectives were to evaluate a technique, outcome and complications following anterior greater trochanteric with gluteus medius muscle pedicle bone graft (AMG) procedure in the treatment of adolescent and active adult hip disorders. METHODS: 20 patients (20 hips) with a mean age of 22.7 ± 15.6 (range 10.0-63.5) years who had undergone AMG and been followed up more than 12 months postoperative were retrospectively enrolled in our study. The AMG procedure was performed in conjunction with subcapital osteotomy for slipped capital femoral epiphysis in 12 and open reduction for fracture/dislocation in 8 hips...
May 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28495949/the-central-bright-spot-sign-a-potential-new-mr-imaging-sign-for-the-early-diagnosis-of-anterior-ischemic-optic-neuropathy-due-to-giant-cell-arteritis
#18
P Remond, A Attyé, A Lecler, L Lamalle, N Boudiaf, F Aptel, A Krainik, C Chiquet
BACKGROUND AND PURPOSE: A rapid identification of the etiology of anterior ischemic optic neuropathy is crucial because it determines therapeutic management. Our aim was to assess MR imaging to study the optic nerve head in patients referred with anterior ischemic optic neuropathy, due to either giant cell arteritis or the nonarteritic form of the disease, compared with healthy subjects. MATERIALS AND METHODS: Fifteen patients with giant cell arteritis-related anterior ischemic optic neuropathy and 15 patients with nonarteritic anterior ischemic optic neuropathy from 2 medical centers were prospectively included in our study between August 2015 and May 2016...
May 11, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28494490/biomechanical-responses-of-lamina-cribrosa-to-intraocular-pressure-change-assessed-by-optical-coherence-tomography-in-glaucoma-eyes
#19
Harry Quigley, Karun Arora, Sana Idrees, Francisco Solano, Sahar Bedrood, Christopher Lee, Joan Jefferys, Thao Nguyen
Purpose: The purpose of this study was to measure change in anterior lamina cribrosa depth (ALD) globally and regionally in glaucoma eyes at different intraocular pressures (IOP). Methods: Twenty-seven glaucoma patients were imaged before and after IOP-lowering procedures using optical coherence tomography. The anterior lamina was marked in approximately 25 locations in each of six radial scans to obtain global and regional estimates of ALD. ALD and its change with IOP were compared with optic disc damage, nerve fiber layer thickness, and visual field loss...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28490427/effect-of-acute-intraocular-pressure-elevation-on-the-minimum-rim-width-in-normal-ocular-hypertensive-and-glaucoma-eyes
#20
Sourabh Sharma, Tin A Tun, Mani Baskaran, Eray Atalay, Sri Gowtham Thakku, Zhang Liang, Dan Milea, Nicholas G Strouthidis, Tin Aung, Michael Ja Girard
BACKGROUND: To estimate and compare changes in the Bruch's membrane opening-minimum rim width (BMO-MRW) and area in normal, ocular hypertensive and glaucoma eyes following acute elevations in intraocular pressure (IOP). METHODS: The optic nerve heads (ONHs) of 104 subjects (31 normals, 20 ocular hypertension (OHT) and 53 with primary glaucoma) were imaged using Spectral-domain optical coherence tomography (OCT; Spectralis, Heidelberg Engineering, Germany). IOP was raised twice by applying a force (0...
May 10, 2017: British Journal of Ophthalmology
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