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soft tissue manipulation

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https://www.readbyqxmd.com/read/28221760/hydrogel-nanocomposites-with-independently-tunable-rheology-and-mechanics
#1
Shimon Unterman, Lyndon F Charles, Sara E Strecker, Denis Kramarenko, Dmitry Pivovarchik, Elazer Reuven Edelman, Natalie Artzi
Hydrogels are an attractive class of biomaterials for minimally invasive local drug delivery given their injectability, tunability, high water content, and biocompatibility. Broad applicability though is challenged: relatively modest mechanical properties restricts use to soft tissues, while flow properties necessary for injectability limit implantation to dried, enclosed tissues to minimize material migration during gelation. To address these dual concerns we designed an injectable nanocomposite hydrogel based on dextran aldehyde and poly(amido amine) dendrimer doped with phyllosilicate nanoplatelet fillers...
February 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28196631/effects-of-12-weeks-of-chiropractic-care-on-central-integration-of-dual-somatosensory-input-in-chronic-pain-patients-a-preliminary-study
#2
Heidi Haavik, Imran Khan Niazi, Kelly Holt, Bernadette Murphy
OBJECTIVE: The purpose of this preliminary study was to assess whether the dual somatosensory evoked potential (SEP) technique is sensitive enough to measure changes in cortical intrinsic inhibitory interactions in patients with chronic neck or upper extremity pain and, if so, whether changes are associated with changes in pain scores. METHODS: The dual peripheral nerve stimulation SEP ratio technique was used for 6 subjects with a history of chronic neck or upper limb pain...
February 10, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28196170/novel-approach-to-managing-malsequenced-and-malpositioned-immediately-placed-implants-in-the-esthetic-zone
#3
Jacob K Stern, Christopher M Bingham, Brock J Pumphrey, Gerard J Chiche, Eduardo Britton
Esthetic implant therapy can be challenging in the anterior maxilla, and meticulous treatment is often required to deliver optimal esthetics. Close collaboration between surgical and prosthetic team members using the novel approach of prosthetic crown lengthening helped camouflage a shallow implant platform location, providing the proper gingival frame for esthetic restorations. This case report presents an interdisciplinary approach that included ridge augmentation, second-stage crown lengthening, and prosthetic soft tissue manipulation to address an implant placed too shallow in the alveolus of an extraction socket...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28194135/inaccurate-saccades-and-enhanced-vestibulo-ocular-reflex-suppression-during-combined-eye-head-movements-in-patients-with-chronic-neck-pain-possible-implications-for-cervical-vertigo
#4
Janine L Johnston, Pierre M Daye, Glen T D Thomson
BACKGROUND: The primate ocular motor system is designed to acquire peripheral targets of interest by coordinating visual, vestibular, and neck muscle activation signals. The vestibulo-ocular reflex (VOR) is greatly reduced at the onset of large eye-head (gaze) saccades and resumes before the end of the saccades to stabilize eye-in-orbit and ensure accurate target acquisition. Previous studies have relied on manipulating head movements in normal individuals to study VOR suppression and gaze kinematics...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28160906/thumb-reconstruction-with-thin-proximal-ulnar-perforator-free-flap
#5
REVIEW
Mario Cherubino, Martina Corno, Luigi Valdatta, Roberto Adani
Soft tissue defects of the thumb with exposure of tendons, periosteum, or neurovascular bundles require a complex reconstruction aimed at restoring both skin coverage and the essential function of pinching and manipulation. When large defects are involved, a free tissue transfer is indicated. The proximal ulnar perforator flap represents an interesting solution without the drawbacks of other more widespread free flaps. This report describes the case of a patient with a squamous cell carcinoma of the thumb that required circumferential resection of the soft tissue of the distal phalanx and the interphalangeal joint...
February 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28154811/closed-reduction-of-irreducible-posterolateral-knee-dislocation-a-case-report
#6
Satoshi Tateda, Atsushi Takahashi, Toshimi Aizawa, Jutaro Umehara
INTRODUCTION: Posterolateral rotary knee dislocation is a rare orthopedic injury that is considered to be irreducible by closed reduction because of soft tissue incarceration. Here, we present a case of posterolateral rotary knee dislocation, which was reduced by closed manipulation. CASE REPORT: The patientwas a 33-year-old man who sustained a twisting injury to his right knee that was diagnosed as posterolateral rotary knee dislocation by plain radiographs and the characteristic physical finding known as a dimple sign...
April 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28129857/discovering-novel-oncogenic-pathways-and-new-therapies-using-zebrafish-models-of-sarcoma
#7
M N Hayes, D M Langenau
Sarcoma is a type of cancer affecting connective, supportive, or soft tissue of mesenchymal origin. Despite rare incidence in adults (<1%), over 15% of pediatric cancers are sarcoma. Sadly, both adults and children with relapsed or metastatic disease have devastatingly high rates of mortality. Current treatment options for sarcoma include surgery, radiation, and/or chemotherapy; however, significant limitations exist with respect to the efficacy of these strategies. Strong impetus has been placed on the development of novel therapies and preclinical models for uncovering mechanisms involved in the development, progression, and therapy resistance of sarcoma...
2017: Methods in Cell Biology
https://www.readbyqxmd.com/read/28117853/soft-and-hard-tissue-management-%C3%A2-in-the-treatment-of-a-discolored-%C3%A2-single-tooth-in-the-esthetic-zone
#8
David Garcia-Baeza, Ramon Garcia-Adamez, Carlos Saavedra
When treating the color of a single tooth in the esthetic zone, it is a complex task to achieve the same visual effect as the rest of the teeth. In addition to the problem of the clinical crown color, if the patient has a thin periodontal biotype it is necessary to manipulate both the hard and soft tissue to achieve a good esthetic result. To change the biotype, a connective tissue graft needs to be performed. The graft must be stabilized exactly where it is needed, and the recipient area modified. The tooth needs to receive an adequate preparation so as to make the restoration thick enough to naturally mask the treated tooth, while also ensuring long-term stability...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28048577/tu-h-campus-iep2-05-breast-and-soft-tissue-equivalent-3d-printed-phantoms-for-imaging-and-dosimetry
#9
D Hintenlang, B Terracino
PURPOSE: The study has the goal to demonstrate that breast and soft tissue-equivalent phantoms for dosimetry applications in the diagnostic energy range can be fabricated using common 3D printing methods. METHODS: 3D printing provides the opportunity to rapidly prototype uniquely designed objects from a variety of materials. Common 3D printers are usually limited to printing objects based on thermoplastic materials such as PLA, or ABS. The most commonly available plastic is PLA, which has a density significantly greater than soft tissue...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047007/we-de-bra-03-construction-of-an-ultrasound-guidance-platform-for-image-guided-radiotherapy-with-the-intent-to-treat-transitional-cell-carcinoma
#10
J Sick, N Rancilio, C Fulkerson, P LaPetina, J Poulson, D Knapp, K Stantz
PURPOSE: Ultrasound (US) is a noninvasive, nonradiographic imaging technique with high spatial and temporal resolution that can be used for localizing soft-tissue structures and tumors in real-time during radiotherapy (inter- and intra-fraction). A detailed methodology integrating 3D-US within RT is presented. This method is easier to adopt into current treatment protocol than current US based systems and reduces user variability for image acquisition, thus eliminating transducer induced changes that limit CT planning system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045812/miniplate-with-a-bendable-c-tube-head-allows-the-clinician-to-alter-biomechanical-advantage-in-extremely-complicated-anatomic-structure
#11
Kyung Won Seo, Nur Serife Iskenderoglu, Eui Hwan Hwang, Kyu-Rhim Chung, Seong-Hun Kim
BACKGROUNDS: This article reports C-tube miniplates as a practical temporary anchorage device choice to treat open bite patients with maxillary sinus pneumatization. METHODS: The C-tube components are titanium anchor plates and monocortical screws that are basically similar to any other miniplate systems, but it has the unique characteristic of the tube head to be malleable. The manipulation of the head part is easy due to the composition of pure titanium. The I-shaped C-tube with 3 holes and T-shaped C-tube miniplates were placed above the apices of maxillary molars as an absolute anchorage system to intrude the posterior maxilla...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28026748/in-situ-mechanical-characterization-of-multilayer-soft-tissue-using-ultrasound-imaging
#12
Saurabh Dargar, Ali Akyildiz, Suvranu De
In this paper we report the development of a technique to characterize layer-specific nonlinear material properties of soft tissue in situ with the potential for in vivo testing. A Soft Tissue Elastography Robotic Arm (STiERA) system comprising of a robotically manipulated 30 MHz high-resolution ultrasound probe, a custom designed compression head and load cells has been developed to perform compression ultrasound imaging on the target tissue and measure reaction forces. A multi-layer finite element model is iteratively optimized to identify the material coefficients of each layer...
December 23, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28008395/nasopharynx-the-secret-vault-for-lost-foreign-bodies-of-the-upper-aerodigestive-tract
#13
Arijit Jotdar, Mainak Dutta, Sohag Kundu
INTRODUCTION: Foreign bodies in the upper aerodigestive tract often get lost following inappropriate attempts at removal. Children may present late with localized infection, posing a challenge to the otolaryngologists in a referral set-up in diagnosing and retrieving such foreign bodies. CASE REPORT: A two-year-old boy presented with refractory purulent rhinorrhea and intermittent low-grade fever. The symptoms suggested rhinosinusitis; however, following a high index of suspicion, he was referred for further evaluation, with the possibility of any hidden foreign object in the upper aerodigestive tract...
November 2016: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27995490/hydrogel-tissue-expanders-for-stomatology-part-i-methacrylate-based-polymers
#14
Jakub Hrib, Jakub Sirc, Petr Lesny, Radka Hobzova, Miroslava Duskova-Smrckova, Jiri Michalek, Roman Smucler
In order to create a soft tissue surplus, implantable volume expanders are often utilized in dental surgery. Implanted tissue expanders should gradually increase their volume, exerting a constant pressure on the surrounding tissue for weeks. Current tissue expanders are based predominantly on externally inflatable balloons or on osmotically active tissue expanders that use soft hydrogels wrapped in perforated plastic coatings, which limit fluid entry and swelling. We have designed and examined tissue expanders based on the controlled rate expansive hydrogels synthesized from copolymers of selected methacrylates and N-vinylpyrrolidone, cross-linked with a combination of non-degradable (glycol dimethacrylates) and hydrolytically degradable (N,O-dimethacryloylhydroxylamine) cross-linkers...
January 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27995396/vibration-testing-procedures-for-bone-stiffness-assessment-in-fractures-treated-with-external-fixation
#15
Lorenza Mattei, Antonia Longo, Francesca Di Puccio, Enrico Ciulli, Stefano Marchetti
A bone healing assessment is crucial for the successful treatment of fractures, particularly in terms of the timing of support devices. However, in clinical practice, this assessment is only made qualitatively through bone manipulation and X-rays, and hence cannot be repeated as often as might be required. The present study reconsiders the quantitative method of frequency response analysis for healing assessments, and specifically for fractures treated with an external fixator. The novelty consists in the fact that bone excitation and response are achieved through fixator pins, thus overcoming the problem of transmission through soft-tissues and their damping effect...
December 19, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27989977/a-review-of-the-literature-on-the-transciliary-supraorbital-keyhole-approach
#16
REVIEW
Daniel Walter Zumofen, Jonathan Rychen, Michel Roethlisberger, Ethan Taub, Daniel Kalbermatten, Erez Nossek, Matthew Potts, Raphael Guzman, Howard Antony Riina, Luigi Mariani
BACKGROUND: Conventional craniotomy approaches involve substantial soft tissue manipulation that can cause complications. The transciliary supraorbital keyhole approach was developed to avoid these complications. OBJECTIVE: To review the safety and effectiveness of the transciliary supraorbital keyhole approach. MATERIAL AND METHODS: We searched the PubMed/Medline database for full-text publications from 1996 onward containing data on 100 or more cases of aneurysm clipping or tumor resection by the transciliary supraorbital approach...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27976776/probing-the-adhesion-properties-of-alginate-hydrogels-a-new-approach-towards-the-preparation-of-soft-colloidal-probes-for-direct-force-measurements
#17
Nicolas Helfricht, Elena Doblhofer, Vera Bieber, Petra Lommes, Volker Sieber, Thomas Scheibel, Georg Papastavrou
The adhesion of alginate hydrogels to solid surfaces was probed by atomic force microscopy (AFM) in the sphere/plane geometry. For this purpose a novel approach has been developed for the immobilization of soft colloidal probes onto AFM-cantilevers, which is inspired by techniques originating from cell biology. The aspiration and consecutive manipulation of hydrogel beads by micropipettes allows the entire manipulation sequence to be carried-out in situ. Hence, any alteration of the hydrogel beads upon drying can be excluded...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/27964801/gesteme-free-context-aware-adaptation-of-robot-behavior-in-human-robot-cooperation
#18
Federico Nessi, Elisa Beretta, Cecilia Gatti, Giancarlo Ferrigno, Elena De Momi
BACKGROUND: Cooperative robotics is receiving greater acceptance because the typical advantages provided by manipulators are combined with an intuitive usage. In particular, hands-on robotics may benefit from the adaptation of the assistant behavior with respect to the activity currently performed by the user. A fast and reliable classification of human activities is required, as well as strategies to smoothly modify the control of the manipulator. In this scenario, gesteme-based motion classification is inadequate because it needs the observation of a wide signal percentage and the definition of a rich vocabulary...
November 2016: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/27935562/current-conservative-management-and-classification-of-club-foot-a-review
#19
Ganesan Balasankar, Ameersing Luximon, Adel Al-Jumaily
Clubfoot, known as congenital talipes equinovarus, is one of the complex paediatric foot deformity with the incidence of 1 in every 1000 live births. It consists of four complex foot abnormalities such as forefoot adductus, midfoot cavus, and hindfoot varus and ankle equinus. There are a number of surgical techniques (soft tissue releases, arthrodesis) used to correct clubfoot. However currently the conservative management (manipulation, serial casting, and braces) of clubfoot is considered as the best choice and it is widely accepted among orthopaedists...
November 30, 2016: Journal of Pediatric Rehabilitation Medicine
https://www.readbyqxmd.com/read/27923707/three-dimensional-magnetic-resonance-imaging-quantification-of-glenoid-bone-loss-is-equivalent-to-3-dimensional-computed-tomography-quantification-cadaveric-study
#20
Adam B Yanke, Jason J Shin, Ian Pearson, Bernard R Bach, Anthony A Romeo, Brian J Cole, Nikhil N Verma
PURPOSE: To assess the ability of 3-dimensional (3D) magnetic resonance imaging (MRI, 1.5 and 3 tesla [T]) to quantify glenoid bone loss in a cadaveric model compared with the current gold standard, 3D computed tomography (CT). METHODS: Six cadaveric shoulders were used to create a bone loss model, leaving the surrounding soft tissues intact. The anteroposterior (AP) dimension of the glenoid was measured at the glenoid equator and after soft tissue layer closure the specimen underwent scanning (CT, 1...
December 3, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
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