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https://www.readbyqxmd.com/read/28103196/sensor-based-gait-parameter-extraction-with-deep-convolutional-neural-networks
#1
Julius Hannink, Thomas Kautz, Cristian Pasluosta, Karl-Gunter Gassmann, Jochen Klucken, Bjoern Eskofier
Measurement of stride-related, biomechanical parameters is the common rationale for objective gait impairment scoring. State-of-the-art double integration approaches to extract these parameters from inertial sensor data are, however, limited in their clinical applicability due to the underlying assumptions. To overcome this, we present a method to translate the abstract information provided by wearable sensors to context-related expert features based on deep convolutional neural networks. Regarding mobile gait analysis, this enables integration-free and data-driven extraction of a set of eight spatio-temporal stride parameters...
December 8, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28101944/biomechanical-implications-of-walking-with-indigenous-footwear
#2
Catherine Willems, Gaetane Stassijns, Wim Cornelis, Kristiaan D'Août
OBJECTIVES: This study investigates biomechanical implications of walking with indigenous "Kolhapuri" footwear compared to barefoot walking among a population of South Indians. MATERIALS AND METHODS: Ten healthy adults from South India walked barefoot and indigenously shod at voluntary speed on an artificial substrate. The experiment was repeated outside, on a natural substrate. Data were collected from (1) a heel-mounted 3D-accelerometer recording peak impact at heel contact, (2) an ankle-mounted 3D-goniometer (plantar/dorsiflexion and inversion/eversion), and (3) sEMG electrodes at the m...
January 19, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28100099/a-user-centered-qualitative-study-on-experiences-with-ankle-foot-orthoses-and-suggestions-for-improved-design
#3
Dymphy van der Wilk, Juha Markus Hijmans, Klaas Postema, Gijsbertus Jacob Verkerke
BACKGROUND: Improving ankle-foot orthosis design can best be done by implementing a user-centered approach. OBJECTIVE: To provide insight into the ideas of ankle-foot orthosis users with flaccid ankle muscle paresis on the importance of activities and suggestions for an improved ankle-foot orthosis design. STUDY DESIGN: A focus-group discussion with eight ankle-foot orthosis users (57 ± 5 years, 50% female). METHODS: Main inclusion criteria were as follows: ⩾18 years, unable to stand on tip-toe and unable to lift toes...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28099529/a-possible-role-of-the-full-length-nascent-protein-in-post-translational-ribosome-recycling
#4
Debasis Das, Dibyendu Samanta, Arpita Bhattacharya, Arunima Basu, Anindita Das, Jaydip Ghosh, Abhijit Chakrabarti, Chanchal Das Gupta
Each cycle of translation initiation in bacterial cell requires free 50S and 30S ribosomal subunits originating from the post-translational dissociation of 70S ribosome from the previous cycle. Literature shows stable dissociation of 70S from model post-termination complexes by the concerted action of Ribosome Recycling Factor (RRF) and Elongation Factor G (EF-G) that interact with the rRNA bridge B2a/B2b joining 50S to 30S. In such experimental models, the role of full-length nascent protein was never considered seriously...
2017: PloS One
https://www.readbyqxmd.com/read/28097064/phalangeal-joints-kinematics-during-ostrich-struthio-camelus-locomotion
#5
Rui Zhang, Qiaoli Ji, Gang Luo, Shuliang Xue, Songsong Ma, Jianqiao Li, Lei Ren
The ostrich is a highly cursorial bipedal land animal with a permanently elevated metatarsophalangeal joint supported by only two toes. Although locomotor kinematics in walking and running ostriches have been examined, these studies have been largely limited to above the metatarsophalangeal joint. In this study, kinematic data of all major toe joints were collected from gaits with double support (slow walking) to running during stance period in a semi-natural setup with two selected cooperative ostriches. Statistical analyses were conducted to investigate the effect of locomotor gait on toe joint kinematics...
2017: PeerJ
https://www.readbyqxmd.com/read/28096184/the-modern-role-of-transoesophageal-echocardiography-in-the-assessment-of-valvular-pathologies
#6
REVIEW
Malgorzata Wamil, Sacha Bull, James Newton
Despite significant advancements in the field of cardiovascular imaging, transoesophageal echocardiography remains the key imaging modality in the management of valvular pathologies. This paper provides echocardiographers with an overview of the modern role of TOE in the diagnosis and management of valvular disease. We describe how the introduction of 3D techniques has changed detection and grading of valvular pathologies and concentrate on its role as a monitoring tool in interventional cardiology. In addition, we focus on the echocardiographic and Doppler techniques used in the assessment of prosthetic valves, and provide guidance for evaluation of prosthetic valves...
January 17, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28095763/effect-of-socks-structures-on-plantar-dynamic-pressure-distribution
#7
Zeynab Soltanzadeh, Saeed Shaikhzadeh Najar, M Haghpanahi, M R Mohajeri-Tehrani
A major purpose of investigating the plantar pressure in patients with pain or those at risk for skin injury is to reduce the pressure below metatarsal heads, specially first and second metatarsal heads. The aim of this article is to evaluate the effects of the socks structures on the changes in plantar dynamic pressure. In this study, seven socks types with different structures for the sole area were produced. The Gaitview(®) AFA-50 system, a force plate, was used to measure the plantar dynamic pressure of 10 participants...
November 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28095703/outcomes-of-the-distal-metatarsal-dorsiflexion-osteotomy-for-advanced-hallux-rigidus
#8
Byung-Ki Cho, Kyoung-Jin Park, Ji-Kang Park, Nelson F SooHoo
BACKGROUND: Hallux rigidus can be treated using several different methods and the best treatment option depends on the severity of degenerative changes of the metatarsophalangeal (MTP) joint. However, the ideal operative option for advanced hallux rigidus remains debatable. This prospective study was performed to evaluate the intermediate-term clinical outcomes of distal metatarsal osteotomy used as a joint-preserving method for the treatment of advanced hallux rigidus. METHODS: Forty-two cases (39 patients) were followed for more than 3 years after distal metatarsal dorsiflexion osteotomy for advanced hallux rigidus of grade III-IV...
January 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28094607/detection-of-the-amphibian-chytrid-fungus-batrachochytrium-dendrobatidis-in-museum-specimens-of-andean-aquatic-birds-implications-for-pathogen-dispersal
#9
Patricia A Burrowes, Ignacio De la Riva
The occurrence of the pathogenic chytrid fungus Batrachochytrium dendrobatidis in the feet of live waterfowl has been documented, but the potential role of birds as dispersers has not been studied. We report the presence of B. dendrobatidis in the feet of preserved aquatic birds in the Bolivian high Andes during the time of drastic amphibian declines in the country. We sampled 48 aquatic birds from the Bolivian Andes that were preserved in museum collections. Birds were sampled for the presence of B. dendrobatidis DNA by swabbing, taking small pieces of tissue from toe webbing, or both...
January 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28093260/shear-and-pressure-under-the-first-ray-in-neuropathic-diabetic-patients-implications-for-support-of-the-longitudinal-arch
#10
Brian Davis, Mariam Crow, Visar Berki, Daniela Ciltea
OBJECTIVE: To assess dynamic arch support in diabetic patients at risk for Charcot neuroarthopathy whose arch index has not yet shown overt signs of foot collapse. METHODS: Two indirect measures of toe flexor activation (ratios: peak hallux pressure to peak metatarsal pressure - Ph/Pm; peak posterior hallux shear to peak posterior metatarsal shear - Sh/Sm) were obtained with a custom built system for measuring shear and pressure on the plantar surface of the foot during gait...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28093050/second-toe-wrap-around-flap-for-reconstruction-of-a-ring-avulsion-injury
#11
A D Murphy, S K Tham
No abstract text is available yet for this article.
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28092978/variability-in-foot-and-ankle-case-volume-in-orthopaedic-residency-training
#12
Steven F DeFroda, Joseph A Gil, Brad D Blankenhorn, Alan H Daniels
: Surgical case volume during orthopaedic surgical residency is a concern among trainees and program directors alike. With an ongoing trend toward further subspecialization and the rapid development of new techniques and devices, the breadth of procedures that residents are exposed to continues to increase. Accreditation Council for Graduate Medical Education surgical case logs from 2009 to 2013 for graduating orthopaedic surgery residents were examined to assess the national averages of orthopaedic procedures logged by graduating orthopaedic surgery residents in the leg/ankle and foot/toes categories...
January 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28092971/literature-review-of-idiopathic-toe-walking
#13
David Pomarino, Juliana Ramírez Llamas, Stephan Martin, Andrea Pomarino
PURPOSE: The main objective of this review is to gather the information available about idiopathic toe walking (ITW), its prevalence and classification, and possible therapeutic approaches. In addition, this review aims to clarify the differences between idiopathic toe walkers and tiptoe walkers with underlying neurological or muscle deficiency as primary conditions. Understanding its causes and learning to make a differential diagnosis will help determine the adequate therapeutic approach...
January 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28089127/mini-invasive-treatment-for-brachymetatarsia-of-the-fourth-ray-in-females-percutaneous-osteotomy-with-mini-burr-and-external-fixation-a-case-series
#14
Federico Fusini, Francesco Langella, Ottorino Catani, Fabrizio Sergio, Fabio Zanchini
Brachymetatarsia is a rare disease defined by metatarsal shortening and characterized by aesthetic dissatisfaction with or without pain. The aim of our study was to evaluate the outcomes of fourth ray brachymetatarsia treated with percutaneous osteotomy using a mini-burr and gradual lengthening with external fixation. A total of 7 females were recruited for the study; 6 (85.71%) of whom had a bilateral deformity, for a total of 13 feet affected by fourth ray brachymetatarsia. Percutaneous diaphysis osteotomy with a mini-burr followed by metatarsal elongation was performed...
January 6, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28080906/oral-squamous-cell-carcinoma-in-an-aged-captive-white-rhinoceros-ceratotherium-simum
#15
Sandra Langer, Nadine Czerwonka, Kerstin Ternes, Dr Werner Herbst, Kernt Koehler
A 48-yr-old captive white rhinoceros ( Ceratotherium simum ) was euthanized due to old age, pododermatitis, and progressive laminitis of the middle toe of the left fore- and hindlimbs. Severe chronic necrotizing periodontitis and dental loss was diagnosed, although food intake prior to death had not decreased. In addition, extensive ulceration of the tongue was noted. Histologically, squamous cell carcinoma of the tongue was diagnosed with chronic severe ulcerative glossitis. Metastatic lesions were not detected...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28079524/spatial-heterogeneity-in-the-time-and-frequency-properties-of-skin-perfusion
#16
Michele Sorelli, Zlatka Stoyneva, Irina Mizeva, Leonardo Bocchi
Pathological alterations of the microcirculatory system can be identified by measuring the temporal and spectral properties of Laser Doppler Flowmetry (LDF) signals acquired on the skin, and their changes following physiological stimulation. A wide range of stimulation protocols and measurement locations are observed in literature. Researchers often use non-invasive stimulation techniques, such as post-occlusive hyperaemia, cold tests, and local heating. As concerns the stimulation/recording sites, the forearm, fingers, and toes are typically selected to conduct microcirculation studies...
January 12, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28078717/a-whole-lamella-perspective-on-the-origin-of-the-epidermal-free-margin-of-anolis-reptilia-dactyloidae-toe-pads
#17
Anthony P Russell, Alyssa Eslinger
Anoline lamellae terminate in an epidermal free margin carrying the majority of its setae. How the free margin is extruded from the body of the scale is not well understood. Two hypotheses have been advanced to account for it, one advocating distal migration of the outer epidermal layers relative to the body of the lamella, and the other proposing regression of the dermal core. Available evidence provides partial support for both. We assembled a series of specimens of Anolis grahami representing all shedding cycle stages, and prepared histological sections of the toe pads to allow measurement of appropriate lamellar components through the shedding cycle...
January 12, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28077535/the-impact-of-a-perceptual-and-adaptive-learning-module-on-transoesophageal-echocardiography-interpretation-by-anaesthesiology-residents
#18
B T Romito, S Krasne, P J Kellman, A Dhillon
BACKGROUND: The role of transoesophageal echocardiography (TOE) in anaesthetic practice is expanding. We evaluated the effect of a TOE perceptual and adaptive learning module (PALM) on first-yr anaesthesiology residents' performance, in diagnosing cardiac pathology by TOE. METHODS: First-yr residents were assigned to a group (n = 12) that used a TOE PALM or a control group that did not (n = 12). Both groups received a TOE pretest that measured their accuracy and response times...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28070223/medical-grade-footwear-the-impact-of-fit-and-comfort
#19
Bessie Hurst, Helen Branthwaite, Andrew Greenhalgh, Nachiappan Chockalingam
BACKGROUND: Pressure-related skin lesions on the digits are a significant cause of discomfort. Most foot pain related to ill-fitting shoes occurs in the forefoot and digital areas. Pain has been associated with poor shoe fit, reduced toe box volume, as well as contour and shape of the shoe Off-the-shelf medical-grade footwear is designed as an intervention for chronic lesions on the digits. These shoes are designed with a flexible neoprene fabric upper that is thought to reduce pressure on the forefoot and reduce discomfort associated with ill-fitting shoes...
2017: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/28065472/adaptive-changes-in-running-kinematics-as-a-function-of-head-stability-demands-and-their-effect-on-shock-transmission
#20
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
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