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Journal of Biomechanics

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https://www.readbyqxmd.com/read/28657927/comparison-of-four-methods-for-dynamization-of-locking-plates-differences-in-the-amount-and-type-of-fracture-motion
#1
Julia Henschel, Stanley Tsai, Daniel C Fitzpatrick, J Lawrence Marsh, Steven M Madey, Michael Bottlang
BACKGROUND: Decreasing the stiffness of locked plating constructs can promote natural fracture healing by controlled dynamization of the fracture. This biomechanical study compared the effect of four different stiffness reduction methods on interfragmentary motion by measuring axial motion and shear motion at the fracture site. METHODS: Distal femur locking plates were applied to bridge a metadiaphyseal fracture in femur surrogates. A locked construct with a short bridge span served as the non-dynamized control group (LOCKED)...
June 22, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28644240/corneal-stiffening-by-a-bacteriochlorophyll-derivative-with-dextran-and-near-infrared-light-effect-of-shortening-irradiation-time-up-to-1-minute
#2
Jurriaan Brekelmans, Alexandra Goz, Mor M Dickman, Alexander Brandis, Xiaomeng Sui, H Daniel Wagner, Rudy M M A Nuijts, Avigdor Scherz, Arie L Marcovich
PURPOSE: The aim of this study is to determine the effect of variation of the exposure time of near-infrared irradiation on corneal stiffening after a bacteriochlorophyll derivative (WST11) with dextran (WST-D) application. METHODS: One hundred four paired eyes of 3-month-old New Zealand White rabbits were included in this study. Fifty-two eyes (ex vivo n = 34, in vivo n = 18) were mechanically deepithelialized, treated topically with WST-D, and irradiated at 10 mW/cm using a diode laser at 755 nm for 1, 5, or 30 minutes...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28637787/biophysics-and-biofluiddynamics-of-primary-cilia-evidence-for-and-against-the-flow-sensing-function
#3
Subhra Nag, Andrew Resnick
Primary cilia have been called "the forgotten organelle" for over 20 years. As cilia now have their own Journal and several books devoted to their study, perhaps it's time to reconsider the moniker "forgotten organelle". In fact, during the drafting of this review, 12 relevant publications have been issued- we therefore apologize in advance for any relevant work we inadvertently omitted. What purpose is yet another ciliary review? The primary goal of this review is to specifically examine the evidence for and against the hypothesized flow-sensing function of primary cilia expressed by differentiated epithelia within a kidney tubule, bringing together differing disciplines and their respective conceptual and experimental approaches...
June 21, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28550427/the-fifty-highest-cited-papers-in-anterior-cruciate-ligament-injury
#4
Ines Vielgut, Jan Dauwe, Andreas Leithner, Lukas A Holzer
INTRODUCTION: The anterior cruciate ligament (ACL) is one of the most common injured knee ligaments and at the same time, one of the most frequent injuries seen in the sport orthopaedic practice. Due to the clinical relevance of ACL injuries, numerous papers focussing on this topic including biomechanical-, basic science-, clinical- or animal studies, were published. The purpose of this study was to determine the most frequently cited scientific articles which address this subject, establish a ranking of the 50 highest cited papers and analyse them according to their characteristics...
July 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28494039/top-cited-articles-in-implant-dentistry
#5
Anastasia Fardi, Konstantinos Kodonas, Theodoros Lillis, Alexander Veis
PURPOSE: Citation analysis is the field of bibliometrics that uses citation data to evaluate the scientific recognition and the influential performance of a research article in the scientific community. The aim of this study was to conduct a bibliometric analysis of the top-cited articles pertaining to implant dentistry, to analyze the main characteristics, and to display the most interesting topics and evolutionary trends. MATERIALS AND METHODS: The 100 top-cited articles published in "Dentistry, Oral Surgery, and Medicine" journals were identified using the Science Citation Index Database...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28331218/identification-of-a-novel-heterozygous-mutation-of-the-aggrecan-gene-in-a-family-with-idiopathic-short-stature-and-multiple-intervertebral-disc-herniation
#6
Sumito Dateki, Akiko Nakatomi, Satoshi Watanabe, Hitomi Shimizu, Yukiko Inoue, Hideo Baba, Koh-Ichiro Yoshiura, Hiroyuki Moriuchi
Aggrecan is a critical proteoglycan component of the extracellular matrix of the growth plates and articular cartilage and has a key role in the biophysical and biomechanical properties of cartilage. Recently, heterozygous mutations in the ACAN gene, which encodes aggrecan, have been identified in patients with short stature and accelerated bone age. We herein report another family with a heterozygous ACAN mutation associated with idiopathic short stature along with accelerated bone age and early-onset herniation of the lumbar discs at the levels of L1/2 through L5/S1...
July 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28276753/dual-mobility-acetabular-cup-for-total-hip-arthroplasty-use-with-caution
#7
Hamed Vahedi, Asim M Makhdom, Javad Parvizi
Dual-mobility cups were introduced to reduce the incidence of dislocation after total hip arthroplasty (THA). The biomechanics of dual-mobility cups allow for greater range of motion, jump distance and better stability when compared to conventional cups in THA. These cups can be very beneficial in THA particularly when the hip instability is a concern such as elderly patients, obese, hip fracture patients, those with neuromuscular diseases, or patients undergoing revision THA for instability. Areas covered: An extensive search is conducted in PubMed and Google scholar to find past five years publications relevant to dual-mobility cups in THA...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28274476/new-tools-for-content-innovation-and-data-sharing-enhancing-reproducibility-and-rigor-in-biomechanics-research
#8
Farshid Guilak
We are currently in one of the most exciting times for science and engineering as we witness unprecedented growth in our computational and experimental capabilities to generate new data and models. To facilitate data and model sharing, and to enhance reproducibility and rigor in biomechanics research, the Journal of Biomechanics has introduced a number of tools for Content Innovation to allow presentation, sharing, and archiving of methods, models, and data in our articles. The tools include an Interactive Plot Viewer, 3D Geometric Shape and Model Viewer, Virtual Microscope, Interactive MATLAB Figure Viewer, and Audioslides...
February 10, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28246134/precision-orthotics-optimising-ankle-foot-orthoses-to-improve-gait-in-patients-with-neuromuscular-diseases-protocol-of-the-proof-afo-study-a-prospective-intervention-study
#9
Niels F J Waterval, Frans Nollet, Jaap Harlaar, Merel-Anne Brehm
INTRODUCTION: In patients with neuromuscular disorders and subsequent calf muscle weakness, metabolic walking energy cost (EC) is nearly always increased, which may restrict walking activity in daily life. To reduce walking EC, a spring-like ankle-foot-orthosis (AFO) can be prescribed. However, the reduction in EC that can be obtained from these AFOs is stiffness dependent, and it is unknown which AFO stiffness would optimally support calf muscle weakness. The PROOF-AFO study aims to determine the effectiveness of stiffness-optimised AFOs on reducing walking EC, and improving gait biomechanics and walking speed in patients with calf muscle weakness, compared to standard, non-optimised AFOs...
February 28, 2017: BMJ Open
https://www.readbyqxmd.com/read/28228612/biomechanical-evaluation-of-three-ventral-fixation-methods-for-canine-atlantoaxial-instability-a-cadaveric-study
#10
Fumitaka Takahashi, Takaharu Hakozaki, Nobuo Kanno, Yasuji Harada, Shinya Yamaguchi, Yasushi Hara
Vol. 78, No. 12 (2016), The "received date" year in the manuscript was printed incorrectly. Error: Received 25 March 2015 ↓ Correction: Received 25 March 2016 The Journal of Veterinary Medical Science Editorial Office would like to offer our sincere apologies for this mistake.
2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28226218/assessing-cartilage-biomechanical-properties-techniques-for-evaluating-the-functional-performance-of-cartilage-in-health-and-disease
#11
Benjamin A Lakin, Brian D Snyder, Mark W Grinstaff
Osteoarthritis (OA) affects millions of people and results in weakened hyaline cartilage due to overloading. During joint articulation, hyaline cartilage must withstand high loads while maintaining low friction to prevent wear and tissue loss. Thus, cartilage compressive stiffness and the coefficient of friction are important indicators of the tissue's functional performance. These mechanical properties are often measured ex vivo using mechanical testing regimens, but arthroscopic handheld probes (e.g., for indentation testing, ultrasound, and optical coherence tomography) and noninvasive imaging modalities (e...
February 2, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28057631/ultimate-fracture-load-of-cadaver-proximal-humeri-correlates-more-strongly-with-mean-combined-cortical-thickness-than-with-areal-cortical-index-dexa-density-or-canal-to-calcar-ratio
#12
J G Skedros, C S Mears, W Z Burkhead
OBJECTIVES: This investigation sought to advance the work published in our prior biomechanical study (Journal of Orthopaedic Research, 2016). We specifically sought to determine whether there are additional easy-to-measure parameters on plain radiographs of the proximal humerus that correlate more strongly with ultimate fracture load, and whether a parameter resembling the Dorr strength/quality characterisation of proximal femurs can be applied to humeri. MATERIALS AND METHODS: A total of 33 adult humeri were used from a previous study where we quantified bone mineral density of the proximal humerus using radiographs and dual-energy x-ray absorptiometry (DEXA), and regional mean cortical thickness and cortical index using radiographs...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28056131/journal-of-biomechanical-engineering-legacy-paper-2016
#13
(no author information available yet)
No abstract text is available yet for this article.
February 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28042119/periprosthetic-femoral-fractures-and-trying-to-avoid-them-what-is-the-contribution-of-femoral-component-design-to-the-increased-risk-of-periprosthetic-femoral-fracture
#14
REVIEW
A V Carli, J J Negus, F S Haddad
AIMS: Periprosthetic femoral fractures (PFF) following total hip arthroplasty (THA) are devastating complications that are associated with functional limitations and increased overall mortality. Although cementless implants have been associated with an increased risk of PFF, the precise contribution of implant geometry and design on the risk of both intra-operative and post-operative PFF remains poorly investigated. A systematic review was performed to aggregate all of the PFF literature with specific attention to the femoral implant used...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28005657/influence-of-orbital-implant-length-and-diameter-on-stress-distribution-a-finite-element-analysis
#15
Zhang Xing, Ling Song Chen, Wei Peng, Ling Jian Chen
PURPOSE: A mathematical simulation of stress distribution around orbital implants was used to determine which length and diameter of implants would be best to dissipate stress. METHODS: An integrated system for computed tomography data was utilized to create a 3-dimensional model of craniofacial structures. The model simulated implants placed in the 7, 11, and 12 o'clock positions of the orbital rim. A load of 2 N was applied to the model along the long axis of the implant (model 1) and an angle of 45° with the long axis of the implant (model 2)...
March 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27959639/physicochemical-property-variation-in-spider-silk-ecology-evolution-and-synthetic-production
#16
Sean J Blamires, Todd A Blackledge, I-Min Tso
The unique combination of great stiffness, strength, and extensibility makes spider major ampullate (MA) silk desirable for various biomimetic and synthetic applications. Intensive research on the genetics, biochemistry, and biomechanics of this material has facilitated a thorough understanding of its properties at various levels. Nevertheless, methods such as cloning, recombination, and electrospinning have not successfully produced materials with properties as impressive as those of spider silk. It is nevertheless becoming clear that silk properties are a consequence of whole-organism interactions with the environment in addition to genetic expression, gland biochemistry, and spinning processes...
January 31, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/27916185/editorial-commentary-when-is-it-just-a-labral-tear-and-not-femoroacetabular-impingement
#17
EDITORIAL
Paul E Beaulé
How often in medicine do we have a diagnosis or pathology to evaluate and treat that hasn't previously been described? With the introduction of the concept of femoroacetabular impingement in 1999, Ganz and colleagues effectively put forth a not-previously-described diagnosis in the field of orthopaedic surgery that has expanded into the biosphere of musculoskeletal care, where we can find now research on this subject in radiology, rheumatology, biomechanics, biomedical, physical therapy, and sports medicine journals...
December 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27900175/free-fall-acrobatics-to-reduce-neck-loads-during-parachute-opening-shock-evaluation-of-an-intervention-acropose
#18
Anton Westman, Björn O Äng
INTRODUCTION: Neck pain is a widespread health problem in the skydiver athlete population, epidemiologically linked to repeated exposure to parachute opening shock (POS). During POS, a parachutist is subjected to considerable deceleration forces. This study aims to evaluate the use of preventive free fall acrobatics to reduce the biomechanical load on the neck of parachutists during parachute opening. METHODS AND ANALYSIS: Interventional study with a cross-over, within-subject, repeated measures design...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27787486/minimally-invasive-cervical-spine-surgery
#19
REVIEW
Branko Skovrlj, Sheeraz A Qureshi
Degenerative disorders of the cervical spine requiring surgical intervention have become increasingly more common over the past decade. Traditionally, open surgical approaches have been the mainstay of surgical treatment. More commonly, minimally invasive techniques are being developed with the intent to decrease surgical morbidity and iatrogenic spinal instability. This study will review four minimally invasive cervical techniques that have been increasingly utilized in the treatment of degenerative cervical spine disease...
June 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/27749518/the-role-of-occlusion-in-implant-therapy-a-comprehensive-updated-review
#20
REVIEW
Rachel A Sheridan, Ann M Decker, Alexandra B Plonka, Hom-Lay Wang
PURPOSE: Occlusal overload may cause implant biomechanical failures, marginal bone loss, or even complete loss of osseointegration. Thus, it is important for clinicians to understand the role of occlusion in implant long-term stability. This systematic review updates the understanding of occlusion on dental implants, the impact on the surrounding peri-implant tissues, and the effects of occlusal overload on implants. Additionally, recommendations of occlusal scheme for implant prostheses and designs were formulated...
December 2016: Implant Dentistry
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