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https://www.readbyqxmd.com/read/28529660/biomechanical-considerations-in-slipped-capital-femoral-epiphysis-and-insights-into-prophylactic-fixation
#1
E Leblanc, J M Bellemore, T Cheng, D G Little, O Birke
PURPOSE: Slipped capital femoral epiphysis (SCFE) is a deformity of the proximal femur secondary to widened and unstable physis. In stabilising the slip, gold standard treatments stop growth and involve premature physeal closure, which prevents the remodelling of the acquired deformity and creates a leg length discrepancy that may be significant in younger patients. METHODS: We measured the impact of placing threaded screws across the proximal femoral physis by measuring the centre-trochanteric distance (CTD) and articulo-trochanteric distance (ATD) in participants with or without prophylactic fixation...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28524066/a-flight-phase-terrain-following-control-strategy-for-stable-and-robust-hopping-of-a-one-legged-robot-under-large-terrain-variations
#2
Natan Shemer, Amir Degani
This work demonstrates a simple, once per step, flight-phase control method for robots running on a planar unknown rough-terrain environment. The robot used to exemplify these control strategies is the ParkourBot, a Spring-Loaded Inverted Pendulum (SLIP)-based robot. The SLIP model is widely used for the description of humans and animals running motion and has been the basis for many robots. A known control scheme for increasing robustness of the conservative, SLIP model is the Swing Leg Retraction (SLR) method...
May 19, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28511376/nerve-conduction-study-on-sural-nerve-among-nepalese-tailors-using-mechanical-sewing-machine
#3
Prakash Kumar Yadav, Ram Lochan Yadav, Deepak Sharma, Dev Kumar Shah, Dilip Thakur, Nirmala Limbu, Md Nazrul Islam
INTRODUCTION: The use of new technologies and innovations are out of access for people living in a developing country like Nepal. The mechanical sewing machine is still in existence at a large scale and dominant all over the country. Tailoring is one of the major occupations adopted by skilled people with lower socioeconomic status and education level. Sural nerves of both right and left legs are exposed to strenuous and chronic stress exerted by chronic paddling of mechanical sewing machine with legs...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28503540/comparisons-of-incidence-of-spinal-and-lower-extremity-deformities-according-to-the-physical-characteristics-between-sports-major-and-nonmajor-college-students
#4
Jangwon Lee
This research was performed to identify the incidence of spinal and lower extremity deformity and to identify the relationship of the incidence between the physical characteristics. One hundred forty-seven Physical Education major students and 54 nonmajor students participated in this study. Data collecting was performed by questionnaire and visual postural evaluation. The incidences of genu varus (P<0.00001), genu recurvatum (P=0.0007), forward head (P<0.00001), lordosis (P<0.00001), and scoliosis (P=0...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28501000/combination-of-a-biodegradable-three-dimensional-3d-printed-cage-for-mechanical-support-and-nanofibrous-membranes-for-sustainable-release-of-antimicrobial-agents-for-treating-the-femoral-metaphyseal-comminuted-fracture
#5
Ying-Chao Chou, Demei Lee, Tzu-Min Chang, Yung-Heng Hsu, Yi-Hsun Yu, Err-Cheng Chan, Shih-Jung Liu
The aim of this study was to develop a biodegradable three-dimensional-printed polylactide (PLA) cage for promoting bony fixation and an antibiotics-embedded poly(d,l)-lactide-co-glycolide (PLGA) nanofibrous membrane for infectious prophylaxis during treating the comminuted metaphyseal fracture in a rabbit femoral model. The in vitro studies included measuring the mechanical properties of the 3D printed cage and determining release activities of vancomycin and ceftazidime from the nanofibers. The in vivo study included comparisons of rabbits of the femoral metaphyseal comminuted fracture treated with or without the combined biodegradable polymers...
May 2, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28488837/allometric-associations-between-body-size-shape-and-100-m-butterfly-speed-performance
#6
Senda Sammoud, Alan M Nevill, Yassine Negra, Raja Bouguezzi, Helmi Chaabene, Younés Hachana
BACKGROUND: This study aimed to estimate the optimal body size, limb--segment length, and girth or breadth ratios associated with 100--m butterfly speed performance in swimmers. METHODS: One--hundred--sixty-seven swimmers as subjects (male: n=103; female: n=64). Anthropometric measurements comprised height, body--mass, skinfolds, arm-span, upper--limb--length, upper--arm, forearm, hand--lengths, lower--limb--length, thigh--length, leg--length, foot--length, arm--relaxed--girth, forearm--girth, wrist--girth, thigh--girth, calf--girth, ankle--girth, biacromial and biiliocristal--breadths...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28483212/predictors-and-functional-implications-of-change-in-leg-length-after%C3%A2-total-knee-arthroplasty
#7
Jason Chinnappa, Darren B Chen, Ian A Harris, Samuel J MacDessi
BACKGROUND: Leg lengthening occurs in 83% of primary total knee arthroplasty (TKA). The effects of leg length discrepancy (LLD) on THA patients are well established. However, patient function and satisfaction associated with LLD after primary TKA has not been analyzed. This study aimed to quantify the magnitude of limb lengthening, identify radiographic and perceived LLD, and correlate these with predictive factors and functional outcomes in a series of TKA patients. METHODS: Patients undergoing primary TKA who met inclusion criteria were prospectively enrolled in this study...
April 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28474865/implication-of-dynamic-balance-in-change-of-direction-performance-in-young-elite-soccer-players-is-angle-dependent
#8
Mehdi Rouissi, Monoem Haddad, Nicola L Bragazzi, Adam L Owen, Wassim Moalla, Moktar Chtara, Karim Chamari
BACKGROUND: Team sports require rapid whole body change of direction (COD) in order to regain, maintain possession of the ball or to avoid opponent. These actions are often performed through unilateral process, with the contralateral leg incurring no ground contact. As a result, maintaining unilateral dynamic balance remains important. The aim of this study was to examine the relationship between dynamic balance (DB) and (COD) performance in young elite soccer players. METHODS: 20 right-footed young elite soccer players (age=16...
April 26, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28469761/lower-leg-length-is-associated-with-running-economy-in-high-level-caucasian-distance-runners
#9
Rauno Laumets, Karel Viigipuu, Kerli Mooses, Jarek Mäestu, Priit Purge, Ando Pehme, Priit Kaasik, Martin Mooses
The aim of the present study was to investigate lower limb anthropometric and composition variables related to running economy (RE) and running performance in a homogeneous group of high level European distance runners. RE at the speeds of 14, 16 and 18 km·h(-1) (189 ± 12; 188 ± 11; 187 ± 11 O2 ml·kg(-1)·km(-1)) and maximal oxygen uptake (VO2max) (67.3 ± 2.9 ml·kg(-1)·min(-1)) of 13 high level distance runners were determined on a motorised treadmill. Anthropometric variables and body composition were measured...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28462802/relationship-between-the-mobility-of-medial-longitudinal-arch-and-postural-control
#10
Tansu Birinci, Sule Badıllı Demirbas
OBJECTIVE: The aim of this study was to analyze the relationship between the medial longitudinal arch mobility and static and dynamic balance. METHODS: A total of 50 subjects (25 female, and 25 male; Mean age: 22.2 ± 1.3 years; BMI: 22.8 ± 3.8 kg/m(2)) were included in this study. The relative arch deformity (RAD) was calculated with both 10% and 90% weight bearing (WB). Static balance was evaluated with Single Leg Stance Test and dynamic balance with TechnoBody PK 200WL computerized balance device...
April 24, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28451597/outcomes-and-complications-after-all-epiphyseal-anterior-cruciate-ligament-reconstruction-in-skeletally-immature-patients
#11
Eric J Wall, Paul J Ghattas, Emily A Eismann, Gregory D Myer, Preston Carr
BACKGROUND: The safest and most effective technique for anterior cruciate ligament (ACL) reconstruction in skeletally immature patients is currently unknown. PURPOSE: To evaluate the functional and patient-reported outcomes of a specific all-epiphyseal ACL reconstruction technique in which the graft, bone tunnels, and fixation do not cross the knee growth plates. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Twenty-seven patients (23 boys, 4 girls; mean age, 11 years; range, 8-15 years) underwent an all-epiphyseal ACL reconstruction with a single femoral transverse epiphyseal tunnel and primarily split tibial epiphyseal tunnels...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28448899/undesirable-properties-of-the-dimensionless-normalisation-for-spatio-temporal-variables
#12
Kohleth Chia, Morgan Sangeux
We used theory and empirical data to demonstrate three undesirable properties of the dimensionless normalisation technique for gait spatio-temporal parameters. Firstly, it may not fully remove the correlation between leg length and spatio-temporal parameters. Secondly, it induces spurious correlation among spatio-temporal parameters, which might obscure their true correlation structure. Thirdly, it induces spurious correlation with external covariates, which complicates further statistical modelling. Therefore, depending on the objectives, we propose alternatives...
April 19, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28448898/kinematic-gait-pattern-in-children-with-cerebral-palsy-and-leg-length-discrepancy-effects-of-an-extra-sole
#13
Meta N Eek, Roland Zügner, Ingibjörg Stefansdottir, Roy Tranberg
The gait pattern in children with cerebral palsy (CP) often differs from normal, with slow velocity, problem with foot clearance and increased stress on joints. Several factors, such as muscle tone, impaired motor control, muscle contractures, skeletal deformities and leg length discrepancy affect gait. Leg length discrepancy can be treated surgically or with elevation of the shoe on the short leg. The purpose of this study was to examine whether compensating for leg length discrepancy, with elevation of the sole, leads to a change in movement pattern during walking in children with spastic CP...
April 17, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28439312/validation-of-the-multiplier-method-for-leg-length-predictions-on-a-large-european-cohort-and-an-assessment-of-the-effect-of-physiological-age-on-predictions
#14
J J Aird, C L Cheesman, A T Schade, F P Monsell
PURPOSE: The Avon Longitudinal Study of Parents and Children (ALSPAC) prospective cohort was used to determine the accuracy of the Paley multiplier method for predicting leg length. Using menarche as a proxy, physiological age was then used to increase the accuracy of the multiplier. METHODS: Chronological age was corrected in female patients over the age of eight years with documented date of first menses. Final sub-ischial leg length and predicted final leg length were predicted for all data points...
2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28431451/-experience-with-the-hind-foot-relaxation-boot
#15
Hans Zwipp, Michael Borrmann, Eberhard Walter
The goal of this paper is to report our experience with hindfoot fractures using our specially developed boot, with a follow-up of 557 cases. This boot works like the well-known Allgöwer-Röck ortheses (ARO), but is a hybrid between a boot and an orthesis. It allows full weightbearing without using crutches and completely protects an acutely operated hind foot fracture, hind foot arthrodesis or a hind foot fracture which is suitable for conservative treatment. In its first generation, this boot was custom made and used in 408 cases, from March 1999 to February 2011...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28428035/evaluation-of-the-external-fixator-truelok-hexapod-system-for-tibial-deformity-correction-in-children
#16
Sébastien Pesenti, Christopher A Iobst, Franck Launay
BACKGROUND: Tibial deformities are common in paediatric orthopaedic practice. Correcting multiplanar tibial deformities associated with lower limb length discrepancycan be challenging. Hexapod external fixation with gradual correction has been proven effective in this situation. OBJECTIVE: To assess clinical and radiological outcomes of gradual tibial deformity correction using the external fixator TL-HEX(TM)(Orthofix) in children. HYPOTHESIS: TL-HEX™ is effective in correcting tibial deformities in children...
April 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28427725/association-of-mild-leg-length-discrepancy-and-degenerative-changes-in-the-hip-joint-and-lumbar-spine
#17
Kelvin J Murray, Tom Molyneux, Michael R Le Grande, Aurora Castro Mendez, Franz K Fuss, Michael F Azari
OBJECTIVE: The purpose of this study was to evaluate the correlation between mild leg length discrepancy (LLD) and degenerative joint disease (DJD) or osteoarthritis. METHODS: We evaluated standard postural lumbopelvic radiographs from 255 adults (121 women and 134 men) who had presented with spinal pain for chiropractic care. Symmetry of femoral head diameters was used to exclude magnification errors. Pearson's partial correlation was used to control for age and derive effect sizes for LLD on DJD in the hip and lower lumbar motion segments...
April 17, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28424851/vascularized-fibular-medialization-for-reconstruction-of-the-tibial-defects-following-tumour-excision
#18
Abed El-Negery, Nabil Ahmed Elmoghazy, Mohamed Serry Abd-Ellatif, Adham Elgeidi
PURPOSE: The purpose of this study was to evaluate the functional and oncologic results of fibular medialization when used alone as a single-stage reconstructive technique after wide excision of malignant tumours of the proximal, middle, or distal tibia. METHODS: Between December 2010 and May 2015, 14 patients (six males and eight females) with primary malignant tumours of the tibia (eight proximal, four diaphyseal, two distal) were treated by wide excision. The mean age of the patients at the time of surgery was 23...
April 19, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28421784/assessment-of-anthropometric-indicators-in-children-with-cerebral-palsy-according-to-the-type-of-motor-dysfunction-and-reference-standard
#19
Jorge Abraham García Iñiguez, Edgar Manuel Vásquez-Garibay, Andrea García Contreras, Enrique Romero-Velarde, Rogelio Troyo Sanromán
AIM: The study aimed to demonstrate that the assessment of the anthropomorphic measurements of children with cerebral palsy (CP) varies according to the type of motor dysfunction and references standard used for comparison. METHOD: In a cross-sectional design, 108 children 2 to 16 years were classified according to the type of motor dysfunction by gender and age group. Weight, mid-upper-arm-circumference (MUAC), and alternative measures for height were performed...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#20
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
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