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https://www.readbyqxmd.com/read/28105865/lower-extremity-variability-changes-with-drop-landing-height-manipulations
#1
Andrew D Nordin, Janet S Dufek
Landing is a common lower extremity injury mechanism in sport, with potential connections to movement control accessed through variability measures. We investigated intra-subject lower extremity variability changes following drop-landing height manipulations using standard deviation (SD) and coefficient of variation (CV) among lower extremity peak sagittal joint angles and moments. Fourteen healthy participants completed five drop-landing trials from five heights 20%, 60%, 100%, 140% and 180% maximum vertical jump height (MVJH)...
January 20, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28105502/transfracture-medial-transposition-of-the-radial-nerve-associated-with-plate-fixation-of-the-humerus
#2
Ali Hassan Chamseddine, Amer Abdallah, Hadi Zein, Assad Taha
PURPOSE: The aim of this study was to illustrate safety, feasibility and advantages of transfracture medial transposition of the radial nerve during the lateral approach and lateral plating of humeral fractures located in the mid and distal shaft. METHODS: This was a retrospective review and analysis of medical records and radiographs of 19 patients who underwent a transfracture medial transposition of the radial nerve. Fifteen patients were treated for fresh fracture and four for nonunion...
January 19, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28098523/effects-of-psychological-distance-and-need-for-cognitive-closure-on-impression-formation
#3
Ivan Tomić, Mirjana Tonković, Dragutin Ivanec
Based on theoretical and empirical similarities between Construal level theory of psychological distance and the Need for cognitive closure (NFC) theory, it could be hypothesized that psychological distance and NFC represent constructs that overlap to some degree. Since both theories describe judgmental behavior in terms of schematic processing, we hypothesized that primacy effect, a schema-driven phenomenon, is strengthened under the heightened NFC and psychological distance. We tested this hypothesis in an impression formation experiment while manipulating psychological distance and measuring NFC...
January 2017: Journal of General Psychology
https://www.readbyqxmd.com/read/28092586/consensus-problem-over-high-order-multiagent-systems-with-uncertain-nonlinearities-under-deterministic-and-stochastic-topologies
#4
Hamed Rezaee, Farzaneh Abdollahi
The leaderless consensus problem over a class of high-order nonlinear multiagent systems (MASs) is studied. A robust protocol is proposed which guarantees achieving consensus in the network in the presences of uncertainties in agents models. Achieving consensus in the case of stochastic links failure is studied as well. Based on the concept super-martingales, it is shown that if the probability of the network connectivity is not zero, under some conditions, achieving almost sure consensus in the network can be guaranteed...
December 6, 2016: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28091802/increased-risk-of-revision-reoperation-and-implant-constraint-in-tka-after-multiligament-knee-surgery
#5
Steven I Pancio, Paul L Sousa, Aaron J Krych, Matthew P Abdel, Bruce A Levy, Diane L Dahm, Michael J Stuart
BACKGROUND: The risk of major complications and revision arthroplasty after TKA in patients who previously underwent multiligament knee surgery have been poorly characterized. QUESTIONS/PURPOSES: Is multiligament knee surgery before TKA associated with (1) worse implant survival, (2) increased use of TKA design constraint, (3) a greater risk for major complications, and (4) poorer scores for pain and function compared with similar patients receiving TKA for primary osteoarthritis? METHODS: Fifty-nine TKAs were performed at our institution between 1985 and 2014 in 59 patients (36 men, 23 women; mean age, 53 years) with a history of previous multiligament knee surgery (≥ two ligaments)...
January 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28081114/enhancement-of-entanglement-using-cascaded-four-wave-mixing-processes
#6
Jun Xin, Jian Qi, Jietai Jing
A maximal joint quadrature squeezing of -6.8±0.4  dB is experimentally obtained by a scheme of cascaded four-wave mixing (FWM) processes, which gives strong proof about the inseparability or entanglement between output of the twin beams from the system. Here joint quadrature is the difference between the two quadratures of the twin beam output from the cascaded FWM processes. This result is enhanced by about 3.1 dB, compared with the one of the single FWM process. We also study the gain dependence of the entanglement enhancement in this cascaded system...
January 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28073093/subject-specific-finite-element-analysis-of-the-carpal-tunnel-cross-sectional-to-examine-tunnel-area-changes-in-response-to-carpal-arch-loading
#7
Piyush Walia, Ahmet Erdemir, Zong-Ming Li
BACKGROUND: Manipulating the carpal arch width (i.e. distance between hamate and trapezium bones) has been suggested as a means to increase carpal tunnel cross-sectional area and alleviate median nerve compression. The purpose of this study was to develop a finite element model of the carpal tunnel and to determine an optimal force direction to maximize area. METHODS: A planar geometric model of carpal bones at hamate level was reconstructed from MRI with inter-carpal joint spaces filled with a linear elastic surrogate tissue...
January 4, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28070268/a-systematic-review-of-thrust-manipulation-for-non-surgical-shoulder-conditions
#8
REVIEW
Amy L Minkalis, Robert D Vining, Cynthia R Long, Cheryl Hawk, Katie de Luca
PURPOSE: Although many conservative management options are available for patients with non-surgical shoulder conditions, there is little evidence of their effectiveness. This review investigated one manual therapy approach, thrust manipulation, as a treatment option. METHODS: A systematic search was conducted of the electronic databases from inception to March 2016: PubMed, PEDro, ICL, CINAHL, and AMED. Two independent reviewers conducted the screening process to determine article eligibility...
2017: Chiropractic & Manual Therapies
https://www.readbyqxmd.com/read/28065472/adaptive-changes-in-running-kinematics-as-a-function-of-head-stability-demands-and-their-effect-on-shock-transmission
#9
Jongil Lim, Michael A Busa, Richard E A van Emmerik, Joseph Hamill
This study aimed to identify adaptive changes in running kinematics and impact shock transmission as a function of head stability requirements. Fifteen strides from twelve recreational runners were collected during preferred speed treadmill running. Head stability demands were manipulated through real-time visual feedback that required head-gaze orientation to maintain within boxes of different sizes, ranging from 21° to 3° of visual angle with 3° decrements. The main outcome measures were tibial and head peak accelerations in the time and frequency domains (impact and active phases), shock transmission from tibia to head, stride parameters, and sagittal plane joint kinematics...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28063038/surgical-denervation-in-the-imiquimod-induced-psoriasiform-mouse-model
#10
Armanda J Onderdijk, Ineke M Hekking-Weijma, Edwin F Florencia, Errol P Prens
Psoriasis is a chronic inflammatory skin disease with a prevalence of 2-3 %. It appears to result from a combination of genetic and environmental factors, but the precise pathogenesis is still unknown. Neurogenic inflammation is involved in psoriasis pathogenesis as well, but the role of neurogenic factors is currently unclear. Molecular studies often involve material obtained from patients. However, many questions and especially experimental manipulations are not suited for study in humans. Imiquimod application on mouse skin leads to immune cell infiltration, inflammation with intense redness, epidermal thickening, and scaling that jointly greatly resembles human psoriasis...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28060227/preoperative-opioid-use-is-associated-with-early-revision-after-total-knee-arthroplasty-a-study-of-male-patients-treated-in-the-veterans-affairs-system
#11
Alon Ben-Ari, Howard Chansky, Irene Rozet
BACKGROUND: Opioid use is endemic in the U.S. and is associated with morbidity and mortality. The impact of long-term opioid use on joint-replacement outcomes remains unknown. We tested the hypothesis that use of opioids is associated with adverse outcomes after total knee arthroplasty (TKA). METHODS: We performed a retrospective analysis of patients who had had TKA within the U.S. Veterans Affairs (VA) system over a 6-year period and had been followed for 1 year postoperatively...
January 4, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28052440/positive-outcomes-following-gait-therapy-intervention-for-hip-osteoarthritis-a-longitudinal-study
#12
Deborah Solomonow-Avnon, Amir Herman, Daniel Levin, Nimrod Rozen, Eli Peled, Alon Wolf
: Footwear-generated biomechanical manipulation of lower-limb joints was shown to beneficially impact gait and quality of life in knee osteoarthritis patients, but has not been tested in hip osteoarthritis patients. We examined a customized gait treatment program using a biomechanical device shown in previous investigations to be capable of manipulating hip biomechanics via foot center of pressure (COP) modulation. The objective of this study was to assess the treatment program for hip osteoarthritis patients, enrolled in a 1-year prospective investigation, by means of objective gait and spatiotemporal parameters, and subjective quality of life measures...
January 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28051883/hydrogels-for-precision-meniscus-tissue-engineering-a-comprehensive-review
#13
Ana Rey-Rico, Magali Cucchiarini, Henning Madry
The meniscus plays a pivotal role to preserve the knee joint homeostasis. Lesions to the meniscus are frequent, have a reduced ability to heal, and may induce tibiofemoral osteoarthritis. Current reconstructive therapeutic options mainly focus on the treatment of lesions in the peripheral vascularized region. In contrast, few approaches are capable of stimulating repair of damaged meniscal tissue in the central, avascular portion. Tissue engineering approaches are of high interest to repair or replace damaged meniscus tissue in this area...
January 4, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28050992/dautrey-s-procedure-revisited-in-management-of-recurrent-mandibular-dislocation
#14
Joanna Baptist, Mohan Baliga
Mandibular dislocation occurs when the condylar head glides out of the glenoid fossa with the condyle positioned in such a way that its posterior articulating surface lying ahead of the articular eminence. Recurrent mandibular dislocation is relatively uncommon. Patient is extremely distressed and goes through a lot of discomfort. Varied etiologies have been cited in the literature, such as keeping the mouth wide open for long periods of time during dental procedures, yawning, laughing, traumatic injuries to the mandible, psychiatric disturbances, and certain drugs...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28050816/-knuckle-cracking-can-blinded-observers-detect-changes-with-physical-examination-and-sonography
#15
Robert D Boutin, Anuj P Netto, David Nakamura, Cyrus Bateni, Robert M Szabo, Michael Cronan, Brent Foster, William R Barfield, J Anthony Seibert, Abhijit J Chaudhari
BACKGROUND: Voluntary knuckle cracking is a common habit, with a reported prevalence of 25% to 45%. Habitual knuckle cracking also is a frequent source of questions for physicians, and the largest study to date reported an association with functional hand impairments. QUESTIONS/PURPOSES: (1) When compared with subjects who are not habitual knuckle crackers, do habitual knuckle crackers have greater QuickDASH scores, swelling, weakness, joint laxity, or ROM? (2) In subjects who crack their knuckles, does cracking immediately increase ROM? (3) What are the characteristic sonographic findings in joints that crack? METHODS: A prospective, institutional review board-approved study was performed on 400 metacarpophalangeal joints (MPJs) in 40 asymptomatic adult subjects...
January 3, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28042118/post-operative-neuropathy-after-total-hip-arthroplasty
#16
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
https://www.readbyqxmd.com/read/28029069/effectiveness-of-osteopathic-manipulative-treatment-versus-osteopathy-in-the-cranial-field-in-temporomandibular-disorders-a-pilot-study
#17
Christina Gesslbauer, Nadja Vavti, Mohammad Keilani, Michael Mickel, Richard Crevenna
PURPOSE: Temporomandibular disorders are a common musculoskeletal condition causing severe pain, physical and psychological disability. The effect and evidence of osteopathic manipulative treatment and osteopathy in the cranial field is scarce and their use are controversial. The purpose of this pilot study was to evaluate the effectiveness of osteopathic manipulative treatment and osteopathy in the cranial field in temporomandibular disorders. METHODS: A randomized clinical trial in patients with temporomandibular disorders was performed...
December 28, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28019670/smoothened-antagonists-reverse-homogentisic-acid-induced-alterations-of-hedgehog-signalling-and-primary-cilium-length-in-alkaptonuria
#18
Silvia Gambassi, Michela Geminiani, Stephen D Thorpe, Giulia Bernardini, Lia Millucci, Daniela Braconi, Maurizio Orlandini, Clare L Thompson, Elena Petricci, Fabrizio Manetti, Maurizio Taddei, Martin M Knight, Annalisa Santucci
Alkaptonuria (AKU) is an ultra-rare genetic disease, in which the accumulation of a toxic metabolite, homogentisic acid (HGA) leads to the systemic development of ochronotic aggregates. These aggregates cause severe complications mainly at the level of joints with extensive degradation of the articular cartilage. Primary cilia have been demonstrated to play an essential role in development and the maintenance of articular cartilage homeostasis, through their involvement in mechanosignalling and Hedgehog signalling pathways...
December 26, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28004637/donders-law-and-task-space-separation-principle-a-force-field-approach-to-motion-planning-for-redundant-manipulators
#19
Paolo Tommasino, Domenico Campolo
In this work, we address human-like motor planning in redundant manipulators. Specifically, we want to capture postural synergies such as Donders' law, experimentally observed in humans during kinematically redundant tasks, and infer a minimal set of parameters to implement similar postural synergies in a kinematic model. For the model itself, although the focus of this paper is to solve redundancy by implementing postural strategies derived from experimental data, we also want to ensure that such postural control strategies do not interfere with other possible forms of motion control (in the task space), i...
December 22, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28002368/effect-of-body-mass-index-on-reoperation-and-complications-after-total-knee-arthroplasty
#20
Eric R Wagner, Atul F Kamath, Kristin Fruth, William S Harmsen, Daniel J Berry
BACKGROUND: High body mass index (BMI) is associated with increased rates of complications after total knee arthroplasty. To date, to our knowledge, studies have examined risk as a dichotomous variable using specific BMI thresholds. The purpose of this investigation was to quantify implant survival and the risk of common complications after total knee arthroplasty using BMI as a continuous variable. METHODS: Using prospectively collected data from our institutional total joint registry, we analyzed 22,289 consecutive knees, in 16,136 patients, treated with primary total knee arthroplasty from 1985 to 2012...
December 21, 2016: Journal of Bone and Joint Surgery. American Volume
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