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https://www.readbyqxmd.com/read/28108774/-hip-dislocation-after-revision-arthroplasty-risk-assessment-and-treatment-strategies
#1
P M Prodinger, J Schauwecker, H Mühlhofer, N Harrasser, F Pohlig, C Suren, R von Eisenhart-Rothe
With a dislocation rate of up to 35% after revision total hip arthroplasty (THA), instability is one of the major causes why this procedure fails. Independent factors for patients at risk are age, sex, and the type of revision needed. The surgical approach, implant choice, and positioning of the components are factors that the surgeon can influence to keep the dislocation rate low. Large femoral heads or double mobility (DM) cups can increase the stability of the joint. After detailed failure analysis, targeted use of different technical innovations enhances stability in revision THA and prevents further revisions...
January 20, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28106803/opportunistic-capacity-based-resource-allocation-for-chunk-based-multi-carrier-cognitive-radio-sensor-networks
#2
Jie Huang, Xiaoping Zeng, Xin Jian, Xiaoheng Tan, Qi Zhang
The spectrum allocation for cognitive radio sensor networks (CRSNs) has received considerable research attention under the assumption that the spectrum environment is static. However, in practice, the spectrum environment varies over time due to primary user/secondary user (PU/SU) activity and mobility, resulting in time-varied spectrum resources. This paper studies resource allocation for chunk-based multi-carrier CRSNs with time-varied spectrum resources. We present a novel opportunistic capacity model through a continuous time semi-Markov chain (CTSMC) to describe the time-varied spectrum resources of chunks and, based on this, a joint power and chunk allocation model by considering the opportunistically available capacity of chunks is proposed...
January 18, 2017: Sensors
https://www.readbyqxmd.com/read/28106529/a-joint-cross-border-investigation-of-a-cluster-of-multidrug-resistant-tuberculosis-in-austria-romania-and-germany-in-2014-using-classic-genotyping-and-whole-genome-sequencing-methods-lessons-learnt
#3
Lena Fiebig, Thomas A Kohl, Odette Popovici, Margarita Mühlenfeld, Alexander Indra, Daniela Homorodean, Domnica Chiotan, Elvira Richter, Sabine Rüsch-Gerdes, Beatrix Schmidgruber, Patrick Beckert, Barbara Hauer, Stefan Niemann, Franz Allerberger, Walter Haas
Molecular surveillance of multidrug-resistant tuberculosis (MDR-TB) using 24-loci MIRU-VNTR in the European Union suggests the occurrence of international transmission. In early 2014, Austria detected a molecular MDR-TB cluster of five isolates. Links to Romania and Germany prompted the three countries to investigate possible cross-border MDR-TB transmission jointly. We searched genotyping databases, genotyped additional isolates from Romania, used whole genome sequencing (WGS) to infer putative transmission links, and investigated pairwise epidemiological links and patient mobility...
January 12, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28105945/assessment-of-transfemoral-amputees-using-a-passive-microprocessor-controlled-knee-versus-an-active-powered-microprocessor-controlled-knee-for-level-walking
#4
Veerle Creylman, Ingrid Knippels, Paul Janssen, Evelyne Biesbrouck, Knut Lechler, Louis Peeraer
BACKGROUND: In transfemoral (TF) amputees, the forward propulsion of the prosthetic leg in swing has to be mainly carried out by hip muscles. With hip strength being the strongest predictor to ambulation ability, an active powered knee joint could have a positive influence, lowering hip loading and contributing to ambulation mobility. To assess this, gait of four TF amputees was measured for level walking, first while using a passive microprocessor-controlled prosthetic knee (P-MPK), subsequently while using an active powered microprocessor-controlled prosthetic knee (A-MPK)...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28103899/intraoperative-evaluation-using-mobile-computed-tomography-in-anterior-cervical-decompression-with-floating-method-for-massive-ossification-of-the-posterior-longitudinal-ligament
#5
Toshitaka Yoshii, Takashi Hirai, Tsuyoshi Yamada, Hiroyuki Inose, Tsuyoshi Kato, Kenichiro Sakai, Mitsuhiro Enomoto, Shigenori Kawabata, Yoshiyasu Arai, Atsushi Okawa
BACKGROUND: An anterior decompression and fusion (ADF) with the floating method is an effective procedure for treating ossification of the posterior longitudinal ligament (OPLL), allowing a direct decompressive effect on the spinal cord. However, the procedure is skill-intensive, particularly in cases of OPLL with a high canal-occupying ratio. In such cases, there are potential risks for insufficient decompression due to the incomplete floating of the OPLL. Here, we introduce an anterior decompression procedure for massive OPLL, using an intraoperative computed tomography (CT) with a mobile scanner gantry for the intraoperative evaluation of the decompression...
January 19, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28100866/development-of-intra-knee-joint-sustained-release-gel-formulation-and-evaluation-of-its-pharmacological-efficiency-in-rats
#6
Takehiro Noda, Tomoyuki Okuda, Kousuke Ban, Ryota Mizuno, Tatsuaki Tagami, Tetsuya Ozeki, Hirokazu Okamoto
In the development of a drug for intra-articular administration, a sustained-release formulation is desirable since it is difficult to sustain the effects of conventional injections due to fast drug leakage from the joint cavity. In this study, we prepared sustained release gel formulations for intra-articular administration containing indocyanine green (ICG) as a model drug to follow its fate after intra-articular administration in rats with IVIS. ICG administered as an aqueous solution leaked from the joint cavity in a short time and was excreted out of the body within a day...
January 17, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28100407/pressure-ulcer-reconstruction-in-patients-with-heterotopic-ossification-after-spinal-cord-injury-a-case-series-and-review-of-literature
#7
REVIEW
Kai Yang, Alexander Graf, James Sanger
Heterotopic ossification (HO) is widely recognized as a common occurrence among patients suffering from traumatic spinal cord injuries (SCI). The exact etiology of HO formation remains unknown. Published medical and surgical management strategies are often plagued with questionable effectiveness and frequent complications. There are minimal publications regarding the management strategies of HO in SCI patients as it pertains to plastic surgery. We present a case series of patients treated at our institution who underwent treatment for pressure ulcers with underlying HO to highlight the vast spectrum of clinical phenotypes present in this population...
December 21, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28098589/can-mandibular-condylar-mobility-sonography-measurements-predict-difficult-laryngoscopy
#8
Weidong Yao, Yumei Zhou, Bin Wang, Tao Yu, Zhongbing Shen, Hao Wu, Xiaoju Jin, Yuanhai Li
BACKGROUND: Limited mandibular condylar mobility plays an important role in difficult laryngoscopy. Indirect assessment methods, such as mouth opening, have been proven to be useful predictors of difficult laryngoscopy. Sonography is a new direct assessment method for the limited mandibular condylar mobility. However, whether this method could be used in predicting difficult laryngoscopy still remains unknown. This study aimed to observe its ability to predict difficult laryngoscopy. METHODS: Adult patients who were administered tracheal intubations for elective surgery under general anesthesia were enrolled in the study...
January 16, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28095857/real-time-inverse-kinematics-for-the-upper-limb-a-model-based-algorithm-using-segment-orientations
#9
Bence J Borbély, Péter Szolgay
BACKGROUND: Model based analysis of human upper limb movements has key importance in understanding the motor control processes of our nervous system. Various simulation software packages have been developed over the years to perform model based analysis. These packages provide computationally intensive-and therefore off-line-solutions to calculate the anatomical joint angles from motion captured raw measurement data (also referred as inverse kinematics). In addition, recent developments in inertial motion sensing technology show that it may replace large, immobile and expensive optical systems with small, mobile and cheaper solutions in cases when a laboratory-free measurement setup is needed...
January 17, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28095214/stretching-exercises-for-shoulder-impingement-syndrome-effects-of-6-week-program-on-shoulder-tightness-pain-and-disability-status
#10
Elif Turgut, Irem Duzgun, Gul Baltaci
CONTEXT: Increasing soft tissue flexibility and joint mobility is one of the important aims of the shoulder impingement syndrome (SIS). OBJECTIVE: The aim of this study was to investigate the effects of stretching program on posterior capsule tightness, pectoralis minor tightness, pain severity and disability status in SIS. DESIGN: Single-group pre-test post-test design. SETTING: University outpatient clinic. PARTICIPANTS: Eighteen participants diagnosed with subacromial impingement syndrome (34...
January 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28093261/experimental-evaluation-of-a-new-morphological-approximation-of-the-articular-surfaces-of-the-ankle-joint
#11
Claudio Belvedere, Sorin Siegler, Andrea Ensini, Jason Toy, Paolo Caravaggi, Ramya Namani, Giulia Giannini, Stefano Durante, Alberto Leardini
The mechanical characteristics of the ankle such as its kinematics and load transfer properties are influenced by the geometry of the articulating surfaces. A recent, image-based study found that these surfaces can be approximated by a saddle-shaped, skewed, truncated cone with its apex oriented laterally. The goal of this study was to establish a reliable experimental technique to study the relationship between the geometry of the articular surfaces of the ankle and its mobility and stability characteristics and to use this technique to determine if morphological approximations of the ankle surfaces based on recent discoveries, produce close to normal behavior...
January 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28092566/wake-up-exoskeleton-to-assist-children-with-cerebral-palsy-design-and-preliminary-evaluation-in-level-walking
#12
Fabrizio Patane, Stefano Rossi, Fausto Del Sette, Juri Taborri, Paolo Cappa
This paper presents the modular design and control of a novel compliant lower limb multi-joint exoskeleton for the rehabilitation of ankle knee mobility and locomotion of pediatric patients with neurological diseases, such as Cerebral Palsy (CP). The device consists of an untethered powered knee-ankle-foot orthosis (KAFO), addressed as WAKE-up (Wearable Ankle Knee Exoskeleton), characterized by a position control and capable of operating synchronously and synergistically with the human musculoskeletal system...
January 11, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28090606/hierarchical-span-based-conditional-random-fields-for-labeling-and-segmenting-events-in-wearable-sensor-data-streams
#13
Roy J Adams, Nazir Saleheen, Edison Thomaz, Abhinav Parate, Santosh Kumar, Benjamin M Marlin
The field of mobile health (mHealth) has the potential to yield new insights into health and behavior through the analysis of continuously recorded data from wearable health and activity sensors. In this paper, we present a hierarchical span-based conditional random field model for the key problem of jointly detecting discrete events in such sensor data streams and segmenting these events into high-level activity sessions. Our model includes higher-order cardinality factors and inter-event duration factors to capture domain-specific structure in the label space...
June 2016: Proceedings of the ... International Conference on Machine Learning
https://www.readbyqxmd.com/read/28079306/open-dislocation-of-ankle-without-fracture-treated-with-an-external-fixator
#14
Emrah Sayit, Asli Tanrivermis Sayit, Elcin Zan
Ankle dislocations are orthopedic emergencies that require immediate treatment to avoid neurovascular impairment. They are usually accompanied by one or more comminuted fractures of the ankle mortis. In rare circumstances, such as high-energy trauma, the ankle dislocations may not be accompanied by concomitant malleolar fractures and, thus, are named "pure ankle dislocations". We presented a very rare and interesting case of an open medial dislocation of the ankle without associated fracture in an 18-year-old man with no known predisposing risk factors...
January 12, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28075417/enriching-mental-health-mobile-assessment-and-intervention-with-situation-awareness
#15
Ariel Soares Teles, Artur Rocha, Francisco José da Silva E Silva, João Correia Lopes, Donal O'Sullivan, Pepijn Van de Ven, Markus Endler
Current mobile devices allow the execution of sophisticated applications with the capacity for identifying the user situation, which can be helpful in treatments of mental disorders. In this paper, we present SituMan, a solution that provides situation awareness to MoodBuster, an ecological momentary assessment and intervention mobile application used to request self-assessments from patients in depression treatments. SituMan has a fuzzy inference engine to identify patient situations using context data gathered from the sensors embedded in mobile devices...
January 10, 2017: Sensors
https://www.readbyqxmd.com/read/28074463/importance-of-fixation-of-posterior-malleolus-fracture-in-trimalleolar-fractures-a-retrospective-study
#16
Sinan Karaca, Meriç Enercan, Güzelali Özdemir, Sinan Kahraman, Mutlu Çobanoğlu, Metin Küçükkaya
BACKGROUND: The aim of this retrospective study was to evaluate treatment effect and importance of posterior malleolus (PM) fixation in surgically treated trimalleolar fractures. METHODS: A total of 57 cases of ankle joint fracture involving PM and treated with open reduction and internal fixation technique between 2004 and 2011 were evaluated. PM fixation was performed with cannulated screws in 46 cases, and in 11 cases, PM plate was used. All patients were assessed using American Orthopaedic Foot and Ankle Society (AOFAS) score, American Academy of Orthopedic Surgeons (AAOS) foot and ankle questionnaire, and Visual Analog Score (VAS) pain scale...
November 2016: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28074105/work-related-exposures-and-disorders-among-physical-therapists-experiences-and-beliefs-of-professional-representatives-assessed-using-a-qualitative-approach
#17
Maria Girbig, Alice Freiberg, Stefanie Deckert, Diana Druschke, Christian Kopkow, Albert Nienhaus, Andreas Seidler
BACKGROUND: According to international study results, physical therapists are afflicted with work-related musculoskeletal, psychosocial and dermal disorders as well as infections. The few existing studies in German-speaking regions focus mainly on dermal and psychosocial exposures and resulting complaints. An overview of all relevant work-related exposures and complaints of physical therapists is currently lacking. We sought to identify work-related exposures based on the subjective experiences and beliefs of physiotherapeutic representatives, in order to identify relevant work-related complaints and diseases...
2017: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/28058636/short-term-and-long-term-educational-mobility-of-families-a-two-sex-approach
#18
Xi Song, Robert D Mare
We use a multigenerational perspective to investigate how families reproduce and pass their educational advantages to succeeding generations. Unlike traditional mobility studies that have typically focused on one-sex influences from fathers to sons, we rely on a two-sex approach that accounts for interactions between males and females-the process in which males and females mate and have children with those of similar educational statuses and jointly determine the educational status attainment of their offspring...
January 5, 2017: Demography
https://www.readbyqxmd.com/read/28043752/fibrous-synovium-releases-higher-numbers-of-mesenchymal-stem-cells-than-adipose-synovium-in-a-suspended-synovium-culture-model
#19
Kenta Katagiri, Yu Matsukura, Takeshi Muneta, Nobutake Ozeki, Mitsuru Mizuno, Hisako Katano, Ichiro Sekiya
PURPOSE: To develop an in vitro model, the "suspended synovium culture model," to demonstrate the mobilization of mesenchymal stem cells (MSCs) from the synovium into a noncontacted culture dish through culture medium. In addition, to examine which synovium, fibrous synovium or adipose synovium, released more MSCs in the knee with osteoarthritis. METHODS: Human synovial tissue was harvested during total knee arthroplasty from knee joints of 34 patients with osteoarthritis (28 patients: only fibrous synovium, 6 patients: fibrous and adipose synovium)...
December 30, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28042118/post-operative-neuropathy-after-total-hip-arthroplasty
#20
E P Su
Nerve palsy is a well-described complication following total hip arthroplasty, but is highly distressing and disabling. A nerve palsy may cause difficulty with the post-operative rehabilitation, and overall mobility of the patient. Nerve palsy may result from compression and tension to the affected nerve(s) during the course of the operation via surgical manipulation and retractor placement, tension from limb lengthening or compression from post-operative hematoma. In the literature, hip dysplasia, lengthening of the leg, the use of an uncemented femoral component, and female gender are associated with a greater risk of nerve palsy...
January 2017: Bone & Joint Journal
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