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https://www.readbyqxmd.com/read/28105954/the-amp-foot-3-new-generation-propulsive-prosthetic-feet-with-explosive-motion-characteristics-design-and-validation
#1
Pierre Cherelle, Victor Grosu, Manuel Cestari, Bram Vanderborght, Dirk Lefeber
The last decades, rehabilitation has become a challenging context for mechatronical engineering. From the state-of-the-art it is seen that the field of prosthetics offers very promising perspectives to roboticist. Today's prosthetic feet tend to improve amputee walking experience by delivering the necessary push-off forces while walking. Therefore, several new types of (compliant) actuators are developed in order to fulfill the torque and power requirements of a sound ankle-foot complex with minimized power consumption...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28105953/a-powered-prosthetic-ankle-joint-for-walking-and-running
#2
Martin Grimmer, Matthew Holgate, Robert Holgate, Alexander Boehler, Jeffrey Ward, Kevin Hollander, Thomas Sugar, André Seyfarth
BACKGROUND: Current prosthetic ankle joints are designed either for walking or for running. In order to mimic the capabilities of an able-bodied, a powered prosthetic ankle for walking and running was designed. A powered system has the potential to reduce the limitations in range of motion and positive work output of passive walking and running feet. METHODS: To perform the experiments a controller capable of transitions between standing, walking, and running with speed adaptations was developed...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28104245/assessing-kinematics-and-kinetics-of-functional-electrical-stimulation-rowing
#3
Adina E Draghici, Glen Picard, J Andrew Taylor, Sandra J Shefelbine
Hybrid functional electrical stimulation (FES) rowing has positive effects on cardiovascular fitness, producing significantly greater aerobic power than either upper body or FES exercise alone. However, there is minimal information on the kinematics, kinetics, and mechanical efficiency of FES-rowing in the spinal cord injured (SCI) population. This study examined the biomechanics of FES-rowing to determine how motions, forces, and aerobic demand change with increasing intensity. Six individuals with SCI and six able-bodied subjects performed a progressive aerobic capacity rowing test...
January 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28103893/open-triple-fusion-versus-tnc-arthrodesis-in-the-treatment-of-mueller-weiss-disease
#4
Hongtao Zhang, Junkun Li, Yusen Qiao, Jia Yu, Yu Cheng, Yan Liu, Chao Gao, Jiaxin Li
BACKGROUND: Mueller-Weiss disease is a rarely diagnosed deformity where the navicular bone undergoes spontaneous osteonecrosis in adults. Until now, there is no widely accepted operative treatment for this unusual disease. We aimed to compare clinical and radiological outcomes between the open triple fusion and talonavicular-cuneiform arthrodesis for Mueller-Weiss disease of stage 4. METHODS: During the period from February 2012 to June 2016, 10 patients (11 feet) suffering from Mueller-Weiss disease of stage 4 were treated by the same senior surgeon...
January 19, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28103730/surgical-treatment-of-moderate-hallux-valgus
#5
Maki Grle, Goran Vrgoc, Ivan Bohacek, Vladimir Hohnjec, Marko Martinac, Iva Brkic, Lovro Stefan, Zdravko Jotanovic
PURPOSE: The purpose of the study was to determine whether lateral soft-tissue release (LSTR) has a beneficial or detrimental effect on the outcome of distal Chevron first metatarsal osteotomy (DCMO) in the treatment of moderate hallux valgus (HV). METHODS: We compared the effect of different surgical treatments in 2 groups of patients: group I (23 patients, 25 feet, average age of 55 [from 43 to 77] years) was subjected to DCMO only, whereas group II (18 patients, 23 feet, average age of 59 [from 52 to 70] years]) was subjected to DCMO with LSTR...
January 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28101197/multiple-large-xanthomas-a-case-report
#6
Chen Zhao, Mingxiang Kong, Li Cao, Qiong Zhang, Yong Fang, Weiwei Ruan, Xiaofan Dou, Xiaohui Gu, Qing Bi
A 23-year-old male patient presented with multiple large masses in his elbows, buttocks, knees, Achilles tendons, feet, shoulders and hands. The large masses in the elbows and buttocks measured ~6×5×5 cm and ~7×5×4 cm, respectively. The patient presented with an elevated level of low-density lipoprotein cholesterol, and had been previously diagnosed with homozygous familial hypercholesterolemia (FH) and multiple xanthomas. Local surgical excisions were performed to remove the massive xanthomas from the elbows and buttocks, and histological analysis of the surgical specimens confirmed the previous diagnosis of homozygous FH (HoFH)...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28099306/nonoperatively-corrected-clubfoot-at-age-2-years-radiographs-are-not-helpful-in-predicting-future-relapse
#7
B Stephens Richards, Shawne Faulks, Ozan Razi, Amanda Moualeu, Chan-Hee Jo
BACKGROUND: Nonoperative treatment of idiopathic clubfoot is standard. The purpose of this study was to determine if measurements made on standing lateral radiographs of successfully treated clubfeet made at 18 to 24 months of age were predictive of late recurrence. METHODS: Inclusion criteria were idiopathic clubfoot with an age at presentation of ≤3 months, nonoperative treatment resulting in a clinically plantigrade foot at 2 years of age, standing lateral radiograph of the involved foot made at 18 to 24 months of age, and a minimum age of 4 years at the time of follow-up...
January 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28099162/thermography-based-blood-flow-imaging-in-human-skin-of-the-hands-and-feet-a-spectral-filtering-approach
#8
A A Sagaidachnyi, A V Fomin, D A Usanov, A V Skripal
The determination of the relationship between skin blood flow and skin temperature dynamics is the main problem in thermography-based blood flow imaging. Oscillations in skin blood flow are the source of thermal waves propagating from micro-vessels toward the skin's surface, as assumed in this study. This hypothesis allows us to use equations for the attenuation and dispersion of thermal waves for converting the temperature signal into the blood flow signal, and vice versa. We developed a spectral filtering approach (SFA), which is a new technique for thermography-based blood flow imaging...
January 18, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28099107/case-238-spontaneous-pneumothorax-secondary-to-intrapulmonary-necrobiotic-rheumatoid-nodule
#9
Ammar A Chaudhry, Maryam Gul, Abbas A Chaudhry, William Moore
History A 54-year-old white woman with a history of rheumatoid arthritis who was taking glucocorticoids and methotrexate presented to the emergency department in December with worsening shortness of breath and chest heaviness for 1 week. She reported additional symptoms of weakness, headache, and arthralgia primarily involving her bilateral hands, wrist, ankles, and feet. She denied experiencing fevers, syncope or presyncope, focal neurologic deficits, chest pain, nausea, vomiting, unintentional weight loss, or recent trauma...
February 2017: Radiology
https://www.readbyqxmd.com/read/28098485/effects-of-umbilical-cord-blood-stem-cells-on-healing-factors-for-diabetic-foot-injuries
#10
N Çil, E O Oğuz, E Mete, A Çetinkaya, G A Mete
The use of stem or progenitor cells from bone marrow, or peripheral or umbilical cord blood is becoming more common for treatment of diabetic foot problems. These cells promote neovascularization by angiogenic factors and they promote epithelium formation by stimulating cell replication and migration under certain pathological conditions. We investigated the role of CD34 + stem cells from human umbilical cord blood in wound healing using a rat model. Rats were randomly divided into a control group and two groups with diabetes induced by a single dose of 55 mg/kg intraperitoneal streptozocin...
January 18, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28095358/axial-and-torsional-stiffness-of-pediatric-prosthetic-feet
#11
Paolo Taboga, Alena M Grabowski
BACKGROUND: Prosthetic stiffness likely affects the walking biomechanics of toddlers and children with leg amputations, but the actual stiffness values for prostheses are not reported by manufacturers or in standardized testing procedures. AIM: We measured axial (kA) and torsional (kT) stiffness from four brands of pediatric prosthetic feet (Trulife, Kingsley Mfg. Co., TRS Incorporated, and College Park Industries) over a range of foot sizes. METHODS: We applied forces and torques onto prostheses with a materials testing machine that replicated those exhibited in vivo by using the kinetics measured from four non-amputee toddlers (2-3years) during walking...
January 5, 2017: Clinical Biomechanics
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
#12
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/28090345/electronically-captured-patient-reported-physical-function-an-important-vital-sign-in-obesity-medicine
#13
J Fleming, G C Wood, C Seiler, A Cook, M R Lent, C D Still, P N Benotti, B A Irving
OBJECTIVES: Impaired physical function (i.e., inability to walk 200 feet, climb a flight of stairs or perform activities of daily living) predicts poor clinical outcomes and adversely impacts medical and surgical weight management. However, routine assessment physical function is seldom performed clinically. The PROMIS Physical Function Short Form 20a (SF-20a) is a validated questionnaire for assessing patient reported physical function, which includes published T-score percentiles adjusted for gender, age and education...
December 2016: Obesity Science & Practice
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/28088938/clinical-analysis-of-54-cases-of-large-area-soft-tissue-avulsion-in-the-lower-limb
#15
Yu Chen, Lei Liu
OBJECTIVE: To assess the clinical curative effect of different treatment methods for large area avulsion injury in the lower limb. METHODS: Between January 2010 and December 2013, 54 patients with large area avulsion injury in the lower limb were treated in the trauma center of our hospital, including 34 males and 20 females with a mean age of 35.7 years (range, 16-65 years). The injury mechanism was traffic accident in 44 cases, hitting by heavy objects in 8 cases, and fall from height in 2 cases, involving 31 thighs, 19 legs and 4 feet involved...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28087285/apert-syndrome-a-consensus-on-the-management-of-apert-hands
#16
David A Pettitt, Zeeshaan Arshad, Anuj Mishra, Paul McArthur
INTRODUCTION: Apert Syndrome is a congenital condition characterised by primary craniosynostosis, midfacial malformations and complex symmetrical malformations of the hands and feet. The hands demonstrate one of the most complex collections of congenital upper limb deformities, posing a significant challenge for the paediatric hand surgeon. This study examines the extant literature and current practice of the four UK specialist craniofacial units regarding the management of Apert hands in order to provide a basis for guideline development...
December 10, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28079742/the-hybrid-method-for-the-treatment-of-congenital-talipes-equinovarus-preliminary-results-on-92-consecutive-feet
#17
Federico Canavese, Mounira Mansour, Guillemette Moreau-Pernet, Yannael Gorce, Alain Dimeglio
Over the past 4 years, our pediatric orthopedic unit has developed a new hybrid protocol combining the advantages of Ponseti's method and the French functional physiotherapy method. Sixty-one patients (92 feet) completed treatment. Clubfoot was unilateral in 30 (49.2%) patients and bilateral in 31 (50.8%) patients. The mean Dimeglio score at the start of treatment was 13.5/20 (range: 6/20-19/20). All patients had clinical and radiographic follow-up for at least 2 years (range: 2-4 years). If orthopedic treatment was ineffective and feet showed no improvement, further surgery was performed...
January 10, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28078554/syntax-response-space-biases-for-hands-not-feet
#18
Timothy W Boiteau, Cameron Smith, Amit Almor
A number of studies have shown a relationship between comprehending transitive sentences and spatial processing (e.g., Chatterjee, Trends in Cognitive Sciences, 5(2), 55-61, 2001), in which there is an advantage for responding to images that depict the agent of an action to the left of the patient. Boiteau and Almor (Cognitive Science, 2016) demonstrated that a similar effect is found for pure linguistic information, such that after reading a sentence, identifying a word that had appeared earlier as the agent is faster on the left than on the right, but only for left-hand responses...
January 11, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28077185/rapidly-progressive-mitral-valve-stenosis-in-patients-with-acromelic-dysplasia
#19
Gabriel Rama, Wendy K Chung, Christopher M Cunniff, Usha Krishnan
Acromelic dysplasias are a group of skeletal dysplasias characterised by short-limbed short stature with other distinctive phenotypic features including small hands and feet and stiff joints. Geleophysic dysplasia is an acromelic dysplasia that is associated with characteristic facial features, progressive cardiac valvular thickening, and tracheal stenosis. Owing to overlapping clinical features with other types of short-limbed skeletal dysplasias, it is important to make a precise diagnosis as they have different cardiac morbidity and mortality...
January 12, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28075427/evaluation-of-sudomotor-function-in-adult-patients-with-long-lasting-type-1-diabetes
#20
Agnieszka Gandecka, Aleksandra Araszkiewicz, Stanisław Piłaciński, Bogna Wierusz-Wysocka, Dorota Zozulińska-Ziółkiewicz
INTRODUCTION    The function of sweat glands appears to be impaired in patients with diabetic complications.  OBJECTIVES    The aim of the study was to evaluate the sudomotor function in adult patients with type 1 diabetes (DM1) and healthy controls and its relationship with metabolic control and diabetic complications. PATIENTS AND METHODS    The study included 404 adult patients with DM 1 (194 women) aged 41 years (IQR: 32-51), disease duration 23 years (IQR: 18-31). Electrochemical skin conductance (ESC) was measured with SUDOSCAN+ on feet and hands in the study group and in the control group of 84 healthy volunteers...
January 10, 2017: Polskie Archiwum Medycyny Wewnętrznej
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