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https://www.readbyqxmd.com/read/28643359/an-open-8-channel-parallel-transmission-coil-for-static-and-dynamic-7t-mri-of-the-knee-and-ankle-joints-at-multiple-postures
#1
Jin Jin, Ewald Weber, Aurelien Destruel, Kieran O'Brien, Bassem Henin, Craig Engstrom, Stuart Crozier
PURPOSE: We present the initial in vivo imaging results of an open architecture eight-channel parallel transmission (pTx) transceive radiofrequency (RF) coil array that was designed and constructed for static and dynamic 7T MRI of the knee and ankle joints. METHODS: The pTx coil has a U-shaped dual-row configuration (200 mm overall length longitudinally) that allows static and dynamic imaging of the knee and ankle joints at various postures and during active movements...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28642663/weber-c-ankle-fractures-with-tibiofibular-diastasis-syndesmosis-only-fixation
#2
Serkan Sipahioglu, Sinan Zehir, Erdem Isikan
OBJECTIVES: To evaluate syndesmosis-only fixation in Weber C ankle fractures with tibiofibular diastasis and to assess the need for additional fibular fixation. METHODS: Twenty-one patients with Weber C ankle fractures and tibiofibular diastasis were followed for at least 24 months after treatment. In treatment of the Weber C fractures, only a syndesmosis screw was used through a mini open lateral incision if the syndesmosis could be anatomically reduced and fibular length and rotation could be restored...
May 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642659/sports-injuries-among-amateur-athletes-at-a-brazilian-university
#3
André Marangoni Asperti, Tiago Lazzaretti Fernandes, André Pedrinelli, Arnaldo José Hernandez
OBJECTIVE: To obtain information on the incidence and nature of sports injuries at a Brazilian university. METHOD: Data from 396 student amateur athletes (61% male) playing 15 different sports during the 2013 season were retrospectively evaluated. Subjects completed the National Collegiate Athletic Association Injury Surveillance System questionnaire at the conclusion of the 2013 sports season. Injuries that resulted in at least one day of time lost were included...
March 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642651/bimalleolar-ankle-fracture-a-simple-fracture
#4
Junji Miller Fukuyama, Robinson Esteves Santos Pires, Pedro José Labronici, José Octávio Soares Hungria, Rodrigo Lopes Decusati
OBJECTIVE: To evaluate the frequency of deltoid ligament injury in bimalleolar supination-external rotation type fractures and whether there is a correlation between the size of the fractured medial malleolus and deltoid ligament injury . METHODS: Twenty six consecutive patients underwent magnetic resonance exams after clinical and radiographic diagnosis of bimalleolar supination-external rotation type ankle fractures . RESULTS: Thirteen patients (50%) presented deltoid ligament injury associated to bimalleolar ankle fracture...
January 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642437/human-in-the-loop-optimization-of-exoskeleton-assistance-during-walking
#5
Juanjuan Zhang, Pieter Fiers, Kirby A Witte, Rachel W Jackson, Katherine L Poggensee, Christopher G Atkeson, Steven H Collins
Exoskeletons and active prostheses promise to enhance human mobility, but few have succeeded. Optimizing device characteristics on the basis of measured human performance could lead to improved designs. We have developed a method for identifying the exoskeleton assistance that minimizes human energy cost during walking. Optimized torque patterns from an exoskeleton worn on one ankle reduced metabolic energy consumption by 24.2 ± 7.4% compared to no torque. The approach was effective with exoskeletons worn on one or both ankles, during a variety of walking conditions, during running, and when optimizing muscle activity...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28642247/clinical-benefit-of-the-fifa-11-programme-for-the-prevention-of-hamstring-and-lateral-ankle-ligament-injuries-among-amateur-soccer-players
#6
Rauf Nouni-Garcia, Concepcion Carratala-Munuera, Domingo Orozco-Beltran, Adriana Lopez-Pineda, María Rosario Asensio-Garcia, Vicente F Gil-Guillen
OBJECTIVE: To analyse the relationship between the implementation of 'the 11' protocol during the regular season in a men's amateur soccer team and the rate of hamstring and lateral ankle ligament (LAL) injuries, and to estimate the clinical benefit of the programme according to the type of injury and the position field. METHODS: This cohort study was conducted in two different men's amateur soccer teams. During two seasons, the exposed group (43 players) performed 'the 11' protocol twice a week, and the unexposed group (43 players) performed the regular training programme...
June 22, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28641973/changes-in-hip-knee-and-ankle-coronal-alignments-after-total-hip-arthroplasty-with-transverse-femoral-shortening-osteotomy-for-unilateral-crowe-type-iv-developmental-dysplasia-of-the-hip
#7
Abdulhamit Misir, Turan B Kizkapan, Kadir I Yildiz, Mehmet A Kaygusuz, Yakup Alpay, Atakan Ezici
BACKGROUND: To investigate changes in lower extremity coronal alignment in patients with unilateral Crowe type IV developmental dysplasia of the hip who underwent total hip arthroplasty with transverse femoral shortening osteotomy. METHODS: We reviewed the preoperative and 1-year postoperative full-length lower extremity radiographs of 25 patients. Femoral offset (FO), mechanical hip-knee-ankle angle, anatomical axis, mechanical axis deviation (MAD), mechanical lateral proximal femoral angle, anatomical medial proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle, knee joint line congruency angle, mechanical medial proximal tibial angle, mechanical lateral distal tibial angle, ankle joint line orientation angle, tibial plafond talus angle, extremity length, and pelvic obliquity were measured on both the operative and nonoperative sides...
June 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28641891/inter-arm-systolic-blood-pressure-differences-relations-with-future-vascular-events-and-mortality-in-patients-with-and-without-manifest-vascular-disease
#8
Guido Kranenburg, Wilko Spiering, Pim A de Jong, L Jaap Kappelle, Gert Jan de Borst, Maarten J Cramer, Frank L J Visseren, Victor Aboyans, Jan Westerink
BACKGROUND: Inter-arm systolic blood pressure difference (SBPD) is an easily obtained patient characteristic which relates to vascular disease. We aimed to identify determinants of large inter-arm SBPD and to investigate the relation between inter-arm SBPD and vascular events in patients with and without manifest vascular disease. METHODS: In a cohort of 7344 patients with manifest vascular disease or vascular risk factors alone enrolled in the Second Manifestations of ARTerial disease (SMART) study, single bilateral non-simultaneous blood pressure measurements were performed...
June 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28641320/transcutaneous-oximetry-measurements-of-the-leg-comparing-different-measuring-equipment-and-establishing-values-in-healthy-young-adults
#9
Tobias P Trinks, Denise F Blake, Derelle A Young, Ken Thistlethwaite, Venkat N Vangaveti
INTRODUCTION: Transcutaneous oximetry measurement (TCOM) is a non-invasive method of determining oxygen tension at the skin level using heated electrodes. AIM: To compare TCOM values generated by different machines and to establish lower limb TCOM values in a cohort of healthy individuals younger than 40 years of age. METHOD: Sixteen healthy, non-smoking volunteers aged 18 to 39 years were recruited. TCOM was obtained at six locations on the lower leg and foot using three different Radiometer machines...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28641159/a-model-to-calculate-the-progression-of-the-centre-of-pressure-under-the-foot-during-gait-analysis
#10
Melissa Gar Yee Louey, Anita Mudge, Elizabeth Wojciechowski, Morgan Sangeux
Pedobarography and the centre of pressure (COP) progression is useful to understand foot function. Pedobarography is often unavailable in gait laboratories or completed asynchronously to kinematic and kinetic data collection. This paper presents a model that allows calculation of COP progression synchronously using force plate data. The model is an adjunct to Plug-In-Gait and was applied to 49 typically developing children to create reference COP data. COP progressions were noted to spend 8% of stance behind the ankle joint centre, traverse lateral of the longitudinal axis of the foot through the midfoot for 76% of stance and finishing past the second metatarsal head on the medial side for 16% of stance...
June 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28641058/acute-kinematics-changes-in-marathon-runners-using-different-footwear
#11
Tania Socorro Amorim Soares, Camila Fonseca de Oliveira, Federico Pizzuto, Rui Manuel Garganta, João Paulo Vila-Boas, Mario Casimiro da Anunciação Paiva
The effects of running with or without shoes on injury prevention have been extensively studied, and several investigations have assessed biomechanical differences between them. However, findings are not consensual and further insights on biomechanical load associated with differently shod or barefoot conditions may be needed. This study aimed to observe if habitually shod marathon runners show acute alterations when running barefoot or with minimalist shoes, and to determine whether the running kinematical adaptations of wearing minimalist shoes were similar to barefoot running...
June 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28640086/diagnostic-value-of-18f-fluorodeoxyglucose-uptake-parameters-to-differentiate-rheumatoid-arthritis-from-other-types-of-arthritis
#12
Anu Bhattarai, Takahito Nakajima, Santosh Sapkota, Yukiko Arisaka, Azusa Tokue, Yukio Yonemoto, Yoshito Tsushima
We aimed evaluate F-fluorodeoxyglucose uptake at major joints for differentiating patients with rheumatoid arthritis (RA) from those with non-RA arthritis using F-fluorodeoxyglucose (FDG)-positron emission tomography (PET).Eighteen patients with RA (13 women; age, 66.8 ± 13.2 years) and 17 patients with non-RA (6 women; age, 50.8 ± 12.5 years) were included. Twelve joints of each patient were examined: shoulder, elbow, wrist, hip, knee, and ankle on both sides. A visual scoring (VS) system was used; quantitative parameters such as maximum standardized uptake value (SUVmax), metabolic active volume (MAV), and total lesion glycolysis (TLG) were evaluated...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639869/economic-burden-of-inpatient-admission-of-ankle-fractures
#13
Justin D Stull, Suneel B Bhat, Justin M Kane, Steven M Raikin
BACKGROUND: Ankle fractures are among the most prevalent traumatic orthopaedic injuries. A large proportion of patients sustaining operative ankle fractures are admitted directly from the emergency department prior to operative management. In the authors' experience, however, many closed ankle injuries may be safely and effectively managed on an outpatient basis. The aim of this study was to characterize the economic impact of routine inpatient admission of ankle fractures. METHODS: A retrospective review of all outpatient ankle fracture surgery performed by a single foot and ankle fellowship-trained surgeon at a tertiary level academic center in 2012 was conducted to identify any patients requiring postoperative inpatient admission...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28639442/weightbearing-ankle-dorsiflexion-range-of-motion-and-sagittal-plane-kinematics-during-single-leg-drop-jump-landing-in-healthy-male-athletes
#14
Brittany Dowling, April L McPherson, James M Paci
BACKGROUND: Passive ankle dorsiflexion range of motion (DROM) measures have been identified as a risk factor for injury during landings. However, passive measurements might not be indicative of dynamic ankle movement, whereas a weightbearing ROM might be a better tool when evaluating movement. The purpose of this study was to investigate the relationship between weightbearing DROM and sagittal plane landing mechanics in a single leg drop jump task. METHODS: 73 male athletes (22...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28639171/subject-specific-axes-of-rotation-based-on-talar-morphology-do-not-improve-predictions-of-tibiotalar-and-subtalar-joint-kinematics
#15
Jennifer A Nichols, Koren E Roach, Niccolo M Fiorentino, Andrew E Anderson
Use of subject-specific axes of rotation may improve predictions generated by kinematic models, especially for joints with complex anatomy, such as the tibiotalar and subtalar joints of the ankle. The objective of this study was twofold. First, we compared the axes of rotation between generic and subject-specific ankle models for ten control subjects. Second, we quantified the accuracy of generic and subject-specific models for predicting tibiotalar and subtalar joint motion during level walking using inverse kinematics...
June 21, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28639035/mitigation-of-pedestrian-heat-stress-using-parasols-in-a-humid-subtropical-region
#16
Shinichi Watanabe, Jin Ishii
Concerns over heat illness have been an increasing social problem in humid subtropical regions. One measure for avoiding excessive heat stress in hot outdoor environments is the use of parasols or umbrellas. The advantage of parasols is that they are a mobile and inexpensive way to provide personal shade outdoors. The objectives of this study were to compare the wet-bulb globe temperature (WBGT) under parasols and at an unshaded point as a reference, and to quantify the reduction in WBGT from the use of parasols in a humid subtropical region...
June 21, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28638971/longer-duration-of-operative-time-enhances-healing-metabolites-and-improves-patient-outcome-after-achilles-tendon-rupture-surgery
#17
Simon Svedman, Olof Westin, Susanna Aufwerber, Gunnar Edman, Katarina Nilsson-Helander, Michael R Carmont, Jón Karlsson, Paul W Ackermann
PURPOSE: The relationship between the duration of operative time (DOT), healing response and patient outcome has not been previously investigated. An enhanced healing response related to DOT may potentiate repair processes, especially in hypovascular and sparsely metabolized musculoskeletal tissues such as tendons. This study aimed to investigate the association between DOT and the metabolic healing response, patient-reported outcome and the rate of post-operative complications after acute Achilles tendon injury...
June 21, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28638690/an-unusual-case-of-diffuse-pigmented-villonodular-synovitis-of-the-shoulder-a-multidisciplinary-approach-with-arthroscopic-synovectomy-and-adjuvant-radiotherapy
#18
Tânia Quinás Serra, João Morais, Zico Gonçalves, Francisco Agostinho, Gilberto Melo, Mónica Henriques
Pigmented villonodular synovitis (PVNS) is a rare proliferative disorder of the synovial membrane. This condition is usually monoarticular, can be locally destructive, and involves muscles, tendons, bursae, bones, and skin. The most commonly affected joints are the knee and hip, followed by the ankle and shoulder. Patients often present with pain, swelling, and joint effusion; however, the duration of symptoms varies. Total synovectomy is the preferred treatment for PVNS. Subtotal synovectomy is a factor of recurrence, and in diffuse PVNS, total excision is very difficult to achieve...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28638684/the-new-acr-eular-criteria-for-rheumatoid-arthritis-can-identify-patients-with-same-disease-activity-but-less-damage-by-ultrasound
#19
Sibel Zehra Aydın, Concepcion Castillo-Gallego, Jackie Nam, Jane Freeston, Sarah Horton, Richard J Wakefield, Paul Emery
OBJECTIVE: We aimed to compare the ultrasound findings of patients fulfilling the 1987 ACR [OLD-rheumatoid arthritis (RA)] and the new ACR/EULAR (NEW-RA) classification criteria to examine the impact of the new criteria on disease characteristics, particularly disease duration. MATERIAL AND METHODS: A total of 2730 hands, wrists, elbows, knees, ankles, and foot joints of 105 consecutive patients with inflammatory arthritis, i.e., 82 patients fulfilling the RA criteria (60 patients, OLD-RA; 22 patients, NEW-RA alone) and 23 patients with undifferentiated arthritis, were scanned using ultrasound...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28638670/arthroscopic-treatment-of-2-consecutive-cases-of-dysplasia-epiphysealis-hemimelica-of-the-ankle-a-5-year-follow-up-report
#20
Cosma Calderaro, Carlo Iorio, Francesco Turturro, Federico Morelli, Luca Labianca, Antonello Montanaro, Andrea Ferretti
The dysplasia epiphysealis hemimelica (DEH) is a rare disease of unknown etiology consisting in an abnormal osteocartilaginous growth at the epiphysis, usually hemimelic with histological findings similar to benign osteochondroma. In this case series, we described the results of the arthroscopic treatment of 2 consecutive cases of intra-articular ankle localization of DEH in 2 patients aged 9 and 10 years. The good result obtained, persistent at the 5-year follow-up, leads us to consider the arthroscopic approach as a reliable treatment in patient affected by intra-articular ankle DEH...
2017: Case Reports in Orthopedics
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