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https://www.readbyqxmd.com/read/29609159/net-ankle-quasi-stiffness-is-influenced-by-walking-speed-but-not-age-for-older-adult-women
#1
John D Collins, Elisa S Arch, Jeremy R Crenshaw, Kathie A Bernhardt, Sundeep Khosla, Shreyasee Amin, Kenton R Kaufman
BACKGROUND: Insufficient plantar flexor resistance due to plantar flexor weakness, an impairment common in patient populations, causes substantial gait deficits. The bending stiffness of passive-dynamic ankle-foot orthoses (PD-AFOs) has the capacity to replace lost plantar flexor resistance. Many patients who are prescribed PD-AFOs are older adults. While PD-AFO bending stiffness should be customized for patients, a method to objectively prescribe this stiffness does not exist. Quantifying natural plantar flexor resistance during non-pathological gait could provide a reference value for objectively prescribing PD-AFO bending stiffness...
March 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29609157/acute-and-mid-term-six-week-effects-of-an-ankle-foot-orthosis-on-biomechanical-parameters-clinical-outcomes-and-physical-activity-in-knee-osteoarthritis-patients-with-varus-malalignment
#2
Maik Sliepen, Elsa Mauricio, Dieter Rosenbaum
BACKGROUND: Knee osteoarthritis (KOA) is a painful disease commonly caused by high loads on the articular cartilage. Orthotic interventions aim to reduce mechanical loading, thereby alleviating pain. Traditional orthotics appear effective, but high drop-out rates have been reported over prolonged periods. RESEARCH QUESTION: The aim of this study was to examine the effect of a novel ankle-foot orthosis (AFO) on gait parameters, physical function and activity of KOA patients...
March 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29587246/effect-of-different-designs-of-ankle-foot-orthoses-on-gait-in-patients-with-stroke-a-systematic-review
#3
REVIEW
Aliyeh Daryabor, Mokhtar Arazpour, Gholamreza Aminian
BACKGROUND: Ankle foot orthoses (AFOs) are used to improve the gait of patients with stroke. RESEARCH QUESTION: The current review aimed at evaluating the efficacy of different designs of AFOs and comparison between them on the gait parameters of individuals with hemiplegic stroke. METHODS: The search strategy was based on the population intervention comparison outcome (PICO) method. A search was performed in PubMed, ISI Web of Knowledge, Scopus, Science Direct, and Google Scholar databases...
March 16, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29574112/ameloblastic-fibrodentinosarcoma-and-ameloblastic-fibro-odontosarcoma-a-systematic-review
#4
Bruno Ramos Chrcanovic, Ricardo Santiago Gomez
The purpose of the present review was to integrate the available data published on ameloblastic fibrodentinosarcoma (AFDS) and ameloblastic fibro-odontosarcoma (AFOS) into a comprehensive analysis of their clinical/radiologic features. An electronic search was undertaken in July/2017. Eligibility criteria included publications having enough clinical/radiological/histological information to confirm the diagnosis. 17 publications (8 AFDS, 9 AFOS) were included. The patients with the two different lesions had a similar mean age...
March 21, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29563785/excess-risk-of-major-vascular-diseases-associated-with-airflow-obstruction-a-9-year-prospective-study-of-0-5-million-chinese-adults
#5
Om P Kurmi, Liming Li, Kourtney J Davis, Jenny Wang, Derrick A Bennett, Ka Hung Chan, Ling Yang, Yiping Chen, Yu Guo, Zheng Bian, Junshi Chen, Liuping Wei, Donghui Jin, Rory Collins, Richard Peto, Zhengming Chen
Background: China has high COPD rates, even among never-regular smokers. Little is known about nonrespiratory disease risks, especially vascular morbidity and mortality after developing airflow obstruction (AFO) in Chinese adults. Objective: We aimed to investigate the prospective association of prevalent AFO with major vascular morbidity and mortality. Materials and methods: In 2004-2008, a nationwide prospective cohort study recruited 512,891 men and women aged 30-79 years from 10 diverse localities across China, tracking cause-specific mortality and coded episodes of hospitalization for 9 years...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29491601/a-mixed-odontogenic-sarcoma-a-challenging-histopathologic-case-and-brief-review-of-the-literature
#6
Saede Atarbashi-Moghadam, Ali Lotfi, Sepideh Mokhtari
Ameloblastic fibro-odontosarcoma (AFOS) is an extremely rare malignant mixed odontogenic tumor. The ectomesenchymal part of the neoplasm shows malignancy, whereas the epithelial component is rather benign. In addition, small areas with deposition of enamel matrix and dentine material are seen. The rarity of this neoplasm and microscopic similarities with other malignant and benign tumors can lead to diagnostic problems. Here, we describe the histopathologic features of a new case of AFOS of the mandible in a 34-year-old female patient...
January 2018: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29465276/clinician-perspectives-and-experiences-in-the-prescription-of-ankle-foot-orthoses-for-children-with-cerebral-palsy
#7
Kyra Kane, Patricia Manns, Joel Lanovaz, Kristin Musselman
PURPOSE: Physiotherapists, orthotists, and physicians are involved in the prescription of ankle-foot orthoses (AFOs) for children with cerebral palsy (CP); however, little is known about how prescription decisions are made in practice. Therefore, the study objective was to identify current AFO prescription and clinical decision-making practices for children with CP in Canada. METHODS: Focus groups were conducted in five pediatric rehabilitation facilities, with 32 clinicians...
February 21, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29440881/immediate-synergistic-effect-of-a-trunk-orthosis-with-joints-providing-resistive-force-and-an-ankle-foot-orthosis-on-hemiplegic-gait
#8
Junji Katsuhira, Sumiko Yamamoto, Nodoka Machida, Yuji Ohmura, Masako Fuchi, Mizuho Ohta, Setsuro Ibayashi, Arito Yozu, Ko Matsudaira
Purpose: The synergistic effects of a trunk orthosis and an ankle-foot orthosis (AFO) in stroke patients with a hemiplegic gait are unclear. We previously developed a trunk orthosis with joints providing resistive force (TORF) to modify malalignment of the trunk and pelvis and confirmed its positive effects in stroke patients during level walking without an AFO. The aim of the present study was to determine if this trunk orthosis and an AFO have synergistic effects during level walking in community-dwelling patients with chronic stroke...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29328088/determination-of-the-optimum-double-pass-image-through-focus-operators
#9
Anibal G de Paul, Roberto F Sanchez, Luis A Issolio
A set of autofocus operators (AFO) are assessed for their ability to determine the optimal double-pass image as well as their potential to detect the focus lines and the disc of least confusion in astigmatic eyes. Eight AFO and three optical quality parameters (OQP) often used to analyze double-pass aerial images were considered. To quantify the discriminative power of each AFO and OQP, a maximum discrimination (MD) parameter was proposed. Double-pass images were obtained from an artificial eye with an induced astigmatism (Cylinder: -1  D, -0...
January 1, 2018: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29285358/ameloblastic-fibro-odontosarcoma-of-the-mandible-with-active-epithelial-proliferation-a-rare-case-report
#10
Haoman Niu, Junyu Liu, Yu Chen, Ning Geng
Ameloblastic fibro-odontosarcoma (AFOS) is an extremely rare subtype of odontogenic sarcoma, with no more than 19 cases reported in the English literature to date. AFOS is a biphasic neoplasm, with deposits of dentin and enamel matrix. We herein present a case of AFOS with active epithelial proliferation in a 31-year-old female patient. The patient was referred to the West China Hospital of Stomatology (Chengdu, China) due to a 6-month history of a swelling in the left mandible. Following clinical and radiological examination, the initial preoperative diagnosis was ameloblastoma, with local invasion and the possibility of malignant transformation...
December 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29215571/application-of-the-superelastic-niti-spring-in-ankle-foot-orthosis-afo-to-create-normal-ankle-joint-behavior
#11
Amirhesam Amerinatanzi, Hashem Zamanian, Narges Shayesteh Moghaddam, Ahmadreza Jahadakbar, Mohammad Elahinia
Hinge-based Ankle Foot Orthosis (HAFO) is one of the most common non-surgical solutions for the foot drop. In conventional HAFOs, the ankle joint is almost locked, and plantar flexion is restricted due to the high stiffness of the hinge mechanism. This often leads to a rigid walking gate cycle, poor muscle activity, and muscle atrophy. Since the ankle torque-angle loop has a non-linear profile, the use of a superelastic NiTi spring within the hinge, due to its nonlinear behavior, could recreate a close-to-normal stiffness of the normal ankle joint, which, in turn, could create a more natural walk...
December 7, 2017: Bioengineering
https://www.readbyqxmd.com/read/29161626/the-effect-of-augmented-somatosensory-feedback-on-standing-postural-sway
#12
Angela Smalley, Scott C White, Robert Burkard
Impaired balance resulting from reduced postural control occurs with aging and various medical conditions. Sensory input for balance control is provided by the visual, vestibular and somatosensory systems. Previous research suggests that increased proprioceptive feedback from various lower extremity devices improves balance. Mixed results have been reported with the use of orthoses such as ankle foot orthoses (AFOs). In this study, 20 healthy subjects wore footplates in their shoes or straps around their lower legs in order to imitate the somatosensory feedback produced by wearing AFOs, but without providing ankle restriction...
November 14, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29099370/metachronous-ameloblastic-fibro-odontoma-and-dentigerous-cyst-in-the-posterior-mandible
#13
Mário Rodrigues de Melo Filho, Sabina Pena Borges Pêgo, Claudio Marcelo Cardoso, Breno Amaral Rocha, Hercílio Martelli-Júnior, Isadora Luana Flores, Luis Antônio Nogueira Dos Santos, Livia Máris Ribeiro Paranaiba
An ameloblastic fibro-odontoma (AFO) is a rare mixed odontogenic tumor with histologic features of an ameloblastic fibroma in conjunction with the presence of dentin and enamel. It usually appears as a well-circumscribed radiolucency with radiopaque foci and slow growth and is commonly seen in children and young adults. A 13-year-old boy presented with an asymptomatic swelling in the posterior right region of the mandible and the right ascending ramus. The clinical, imaging, and histopathologic findings confirmed the diagnosis of an AFO...
November 2017: General Dentistry
https://www.readbyqxmd.com/read/29050944/crystal-structures-of-aflatoxin-oxidase-from-armillariella-tabescens-reveal-a-dual-activity-enzyme
#14
Tingting Xu, Chunfang Xie, Dongsheng Yao, Cong-Zhao Zhou, Jinsong Liu
Aflatoxin-oxidase (AFO), a newly discovered oxidase isolated from Armillariella tabescens, was reported to perform aflatoxin B1 (AFB1) detoxification through breaking the bisfuran ring of AFB1. However, based on sequence alignment, we found that AFO shares high sequence identities with dipeptidyl peptidase III (DPP III) family members. To understand the functions of AFO, we determined its crystal structures in the absence and presence of zinc, copper ion, and employed HPLC to test if AFO could cleave the substrates of DPP III...
December 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29037441/impact-of-ankle-foot-orthosis-stiffness-on-achilles-tendon-and-gastrocnemius-function-during-unimpaired-gait
#15
Hwan Choi, Keshia M Peters, Michael B MacConnell, Katie K Ly, Eric S Eckert, Katherine M Steele
Ankle foot orthoses (AFOs) are designed to improve gait for individuals with neuromuscular conditions and have also been used to reduce energy costs of walking for unimpaired individuals. AFOs influence joint motion and metabolic cost, but how they impact muscle function remains unclear. This study investigated the impact of different stiffness AFOs on medial gastrocnemius muscle (MG) and Achilles tendon (AT) function during two walking speeds. We performed gait analyses for eight unimpaired individuals. Each individual walked at slow and very slow speeds with a 3D printed AFO with no resistance (free hinge condition) and four levels of ankle dorsiflexion stiffness: 0...
September 23, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28984769/conservative-treatment-for-equinus-deformity-in-children-with-cerebral-palsy-using-an-adjustable-splint-assisted-ankle-foot-orthosis
#16
Wei Chen, Xiaoyu Liu, Fang Pu, Yang Yang, Lizhen Wang, Hong Liu, Yubo Fan
BACKGROUND: A novel splint, the assisting ankle-foot orthoses (AFO), was developed to provide adjustable sustained stretching to improve conservative treatment for equinus deformities in children with cerebral palsy (CP). The treatment effect was validated by follow-up visits. METHODS: This study involved subjects between 2 and 12 years old, including 28 CP children treated with splint-assisted AFO correction, 30 CP children treated with static AFO correction, and 30 normal children with typical development (TD)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28945975/effect-of-muscle-tone-on-ankle-kinetics-during-gait-with-ankle-foot-orthoses-in-persons-with-stroke
#17
Shiho Mizuno, Shigeru Sonoda, Kotaro Takeda, Shinichiro Maeshima
Background Individuals exhibiting hemiplegia and increased ankle plantar flexors muscle tone following stroke are frequently prescribed an ankle-foot orthosis (AFO) to regain functional ambulation. The effect of muscle tone on ankle kinetics when walking with an AFO remains unknown. Objectives To investigate the effect of plantar flexion (PF) muscle tone on ankle plantar flexion torque during walking with an ankle-foot orthosis Methods The study included 80 participants with first-ever stroke whose manual muscle testing (MMT) of ankle DF 0-4, and 10 healthy subjects...
September 25, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28923286/abnormally-fertilized-oocytes-can-result-in-healthy-live-births-improved-genetic-technologies-for-preimplantation-genetic-testing-can-be-used-to-rescue-viable-embryos-in-in-vitro-fertilization-cycles
#18
Antonio Capalbo, Nathan Treff, Danilo Cimadomo, Xin Tao, Susanna Ferrero, Alberto Vaiarelli, Silvia Colamaria, Roberta Maggiulli, Giovanna Orlando, Catello Scarica, Richard Scott, Filippo Maria Ubaldi, Laura Rienzi
OBJECTIVE: To test whether abnormally fertilized oocyte (AFO)-derived blastocysts are diploid and can be rescued for clinical use. DESIGN: Longitudinal-cohort study from January 2015 to September 2016 involving IVF cycles with preimplantation genetic testing for aneuploidy (PGT-A). Ploidy assessment was incorporated whenever a blastocyst from a monopronuclear (1PN) or tripronuclear zygote (2PN + 1 smaller PN; 2.1 PN) was obtained. SETTING: Private IVF clinics and genetics laboratories...
December 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28918357/long-term-follow-up-after-tibialis-anterior-tendon-shortening-in-combination-with-achilles-tendon-lengthening-in-spastic-equinus-in-cerebral-palsy
#19
Michèle Kläusler, Bernhard Maria Speth, Reinald Brunner, Oren Tirosh, Carlo Camathias, Erich Rutz
Using Tibialis Anterior Shortening (TATS) in combination with Achilles Tendon Lengthening (TAL) to treat spastic equinus in children with cerebral palsy (CP) was described in 2011. Short-term results have indicated a good outcome, especially an improvement of the drop foot in swing phase and the correction of equinus in stance phase. The aim of this study was to analyse the results of the long-term follow-up and to determine the relapse rate of TATS and TAL. The kinematics of the sagittal, frontal and transversal planes were measured by using instrumented 3D gait analysis at three defined time points and then described using the Gait Profile Score (GPS) and Movement Analysis Profile (MAP)...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28915105/variations-of-ankle-foot-orthosis-constrained-movements-increase-ankle-range-of-movement-while-maintaining-power-output-of-recumbent-cycling
#20
Puteri N F Hamdan, Nur Azah Hamzaid, Juliana Usman, Md Anamul Islam, Victor S P Kean, Ahmad K Abdul Wahab, Nazirah Hasnan, Glen M Davis
Previous research investigated recumbent cycle power output (PO) from the perspective of knee and hip joint biomechanics. However, ankle-foot biomechanics and, in particular, the effect of ankle-foot orthosis (AFO)-constrained movements on cycle PO has not been widely explored. Therefore, the purpose of this study was to determine whether AFOs of a fixed position (FP) and in dorsi-plantarflexion (DPF)-, dorsiflexion (DF)- and plantarflexion (PF)-constrained movements might influence PO during voluntary recumbent cycling exercises...
September 15, 2017: Biomedizinische Technik. Biomedical Engineering
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