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https://www.readbyqxmd.com/read/30118997/comparison-the-time-to-stabilization-and-activity-of-the-lower-extremity-muscles-during-jump-landing-in-subjects-with-and-without-genu-varum
#1
Amir Letafatkar, Zahed Mantashloo, Mohsen Moradi
BACKGROUND: Knee muscles activity changes from Genu Varum deformity(GVD), may cause this individual more exposed to lower extremity injuries especially in high-risk activities like landing. OBJECTIVE: The aim of this study was to compare the activity of the lower limb stabilizer muscles during jump-landing and time to stabilization(TTS) in subjects with and without GVD. METHOD: A total of 44 men (group 1, with GVD n = 22 and group 2, without GVD n = 22); with mean age = 17...
August 3, 2018: Gait & Posture
https://www.readbyqxmd.com/read/30118394/differences-in-impact-characteristics-joint-kinetics-and-measurement-reliability-between-forehand-and-backhand-forward-badminton-lunges
#2
Morten Hauge Nielsen, Jan Noergaard Lund, Wing-Kai Lam, Uwe Gustav Kersting
This study identified the effect of badminton lunging directions on impact characteristics, joint kinetics and measurement reliability. A total of 14 badminton players performed 20 lunges in both forehand and backhand sides. Ground reaction force (GRF) and three-dimensional joint moment variables were determined for further analyses. Paired t-tests and Wilcoxon signed-rank tests were performed to determine any differences between the two lunge directions and intra-class correlation (ICC) and sequential averaging analysis (SAA) were used to estimate the minimum number of trials...
August 17, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/30118391/the-biomechanical-effect-of-warm-up-stretching-strategies-on-landing-mechanics-in-female-volleyball-athletes
#3
Jason M Avedesian, Lawrence W Judge, Henry Wang, D Clark Dickin
Female volleyball athletes incorporate dynamic and static stretching into a warm-up, with evidence generally supporting dynamic stretching to improve performance. However, the effects of these stretching practices on injury risk during subsequent volleyball manoeuvres have yet to be fully elucidated in the warm-up literature. Three-dimensional kinematic data associated with non-contact, lower extremity injury were recorded on 12 female collegiate club volleyball athletes during unilateral landing tasks on the dominant and non-dominant limb...
August 17, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/30117605/changes-in-biomechanical-knee-injury-risk-factors-across-two-collegiate-soccer-seasons-using-the-11-prevention-program
#4
Amelia J H Arundale, Holly J Silvers-Granelli, Adam Marmon, Ryan Zarzycki, Celeste Dix, Lynn Snyder-Mackler
The 11+ injury prevention program effectively reduces injuries in high school aged female soccer player, but the mechanism of the 11+ is unknown, particularly whether it impacts biomechanical risk factors associated with knee injuries. The purpose was to report the changes in hip and knee biomechanics with use of the 11+ over two soccer seasons. Two collegiate women's soccer teams performed the 11+ for two soccer seasons. A control team was followed for one season. Athletes performed motion analysis of a drop vertical jump during preseason and postseason...
August 17, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/30117347/hip-knee-and-ankle-functional-demand-during-habitual-and-fast-pace-walking-in-younger-and-older-women
#5
Deborah Hebling Spinoso, Nise Ribeiro Marques, Dain Patrick LaRoche, Camilla Zamfollini Hallal, Aline Harumi Karuka, Fernanda Cristina Milanezi, Mauro Gonçalves
This study compared functional demand (FD) between older and younger women walking at habitual and fast speed and determined strength thresholds necessary to maintain FD below 80%. FD was calculated by expressing walking flexion and extension joint torques, of the ankle, knee, and hip, as a percentage of maximal strength. Young had an average FD of 65% across joint actions and speeds, whereas older women had FD of 90%. In older women the greatest FD occurred in the hip musculature. The hip, knee and ankle extensor strengths required to maintain FD below 80% were 1...
August 17, 2018: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/30116104/short-term-outcomes-of-treatment-of-hip-osteoarthritis-with-4-bone-marrow-concentrate-injections-a-case-series
#6
Marc Darrow, Brent Shaw, Brittany Darrow, Stevie Wisz
The use of mesenchymal stem cells from bone marrow concentrate (BMC) has become an increasingly popular option as an alternative to total joint replacement. Although there is evidence to support the use of BMC injections to improve quality of life for patients with knee osteoarthritis (OA), there is limited evidence to support its use in patients with hip OA. This case series provides the short-term outcomes of 4 hip OA patients who each underwent 4 BMC injections. On average, the last follow-up was administered 3...
2018: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/30115055/use-of-the-global-alliance-for-musculoskeletal-health-survey-module-for-estimating-the-population-prevalence-of-musculoskeletal-pain-findings-from-the-solomon-islands
#7
D G Hoy, T Raikoti, E Smith, A Tuzakana, T Gill, K Matikarai, J Tako, A Jorari, F Blyth, A Pitaboe, R Buchbinder, I Kalauma, P Brooks, C Lepers, A Woolf, A Briggs, L March
BACKGROUND: Musculoskeletal (MSK) conditions are common and the biggest global cause of physical disability. The objective of the current study was to estimate the population prevalence of MSK-related pain using a standardized global MSK survey module for the first time. METHODS: A MSK survey module was constructed by the Global Alliance for Musculoskeletal Health Surveillance Taskforce and the Global Burden of Disease MSK Expert Group. The MSK module was included in the 2015 Solomon Islands Demographic and Health Survey...
August 16, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/30112681/procedure-for-single-stage-implant-retention-for-chronic-periprosthetic-infection-using-topical-degradable-calcium-based-antibiotics
#8
Yves Gramlich, Gerhard Walter, Alexander Klug, Johannes Harbering, Matthias Kemmerer, Reinhard Hoffmann
INTRODUCTION: Surgical treatment using DAIR (debridement, systemic antibiotics, and implant retention) can lead to high rates of treatment success in cases of early periprosthetic joint infection (PJI) but can fail in late-onset cases. Supplementary local antibiotic therapy is not yet generally established and lacks evidence-based proof of efficacy. The aim of this study was to analyze DAIR outcomes in recurrent PJI cases and patients who are not suitable for a two-stage exchange, using additional degradable calcium-based antibiotics...
August 15, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/30112637/alleged-malpractice-in-orthopaedics-analysis-of-a-series-of-medmal-insurance-claims
#9
M B Casali, A Blandino, S Del Sordo, G Vignali, S Novello, G Travaini, M Berlusconi, U Genovese
BACKGROUND: Medical malpractice is an important topic worldwide, and orthopedics is a clinical branch that is considered to be at a high risk for claims. The analysis of a series of medmal insurance claims allows forensic pathologists, clinicians, and insurance companies to probe the risk of a specific clinical branch for medical malpractice claims and highlights areas where care may be improved. We investigated the main features of a major Italian insurance broker's archive in order to identify recurrent pitfalls in this field...
July 27, 2018: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/30112408/do-culture-negative-periprosthetic-joint-infections-have-a-worse-outcome-than-culture-positive-periprosthetic-joint-infections-a-systematic-review-and-meta-analysis
#10
REVIEW
Marie Reisener, Carsten Perka
Background: Culture-negative periprosthetic joint infections (CN PJI) have not been well studied, and due to the lack of consensus on PJI, especially with culture-negative infections, there are considerable uncertainties. Due to the challenging clinical issue of CN PJI the aim of this systematic review is to describe incidence, diagnosis, and treatment outcomes based on the current literature on CN PJI. Hypothesis: The review is designed to assess the formal hypothesis that CN PJI of the hip and knee have a poorer outcome when compared with culture-positive ones...
2018: BioMed Research International
https://www.readbyqxmd.com/read/30111310/lower-extremity-joint-contracture-according-to-ambulatory-status-in-children-with-duchenne-muscular-dystrophy
#11
Young-Ah Choi, Seong-Min Chun, Yale Kim, Hyung-Ik Shin
BACKGROUND: Lower extremity joint contractures have negative effects on gait in children with Duchenne muscular dystrophy (DMD). Thus, contracture prevention is essential for maintaining a patient's functional ability and an acceptable quality of life. This study investigated hip flexion (HF), knee flexion (KF), and ankle joint plantar flexion (APF) contractures among male patients with DMD, based on the patients' ambulatory status. Differences in major joint contractures, based on passive stretching exercise participation, were also investigated...
August 16, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/30109503/hamstring-stiffness-pattern-during-contraction-in-healthy-individuals-analysis-by-ultrasound-based-shear-wave-elastography
#12
Bruno Mendes, Telmo Firmino, Raúl Oliveira, Tiago Neto, Jorge Infante, João R Vaz, Sandro R Freitas
PURPOSE: To assess the stiffness of hamstring muscles during isometric contractions in healthy individuals, using ultrasound-based shear wave elastography to (1) determine the intra- and inter-day assessment repeatability, (2) characterize the stiffness of semitendinosus (ST) and biceps femoris long head (BFlh) along the contraction intensity, and (3) characterize stiffness distribution among the hamstring muscles and inter-limb symmetry. METHODS: Two experiments were conducted...
August 14, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/30108401/a-case-of-avascular-necrosis-in-a-patient-with-adrenocortical-carcinoma-and-disseminated-metastasis
#13
Nadir Siddiqui, Bilal Ahmed Khan
28 years old, male patient was diagnosed with Metastatic Adrenocortical Carcinoma after extensive investigation. Patient's primary concern was only his right hip and right shoulder pain. On imaging investigations, the patient was diagnosed with Avascular Necrosis of the right hip joint. Further laboratory work-up for avascular necrosis showed Primary Hypercortisolism and eventually patient was found to have Adrenocortical Carcinoma base on CT and bone scan results, Avascular Necrosis usually presents with pain in the affected area, mostly involving shoulder, knee or hip joint...
August 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/30106831/it-is-all-about-value-now-the-data-you-need-to-collect-and-how-to-do-it-aoa-critical-issues
#14
Jay R Lieberman, Kevin J Bozic, William J Mallon, Charles A Goldfarb
Health care has entered an era where value and quality have become more important than just quantity. Patient-reported outcomes are a critical aspect of the value equation. Orthopaedic surgeons will need to demonstrate that their treatment regimens actually are enhancing their patients' quality of life. In order to do this, the collection of prospective patient-reported outcome data will be critical. For most patients, this will require the use of a general health survey and a disease-specific questionnaire...
August 15, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/30106355/kinematic-patterns-for-hindlimb-obstacle-avoidance-during-sheep-locomotion
#15
Diana Costa, Camila Cardoso Diogo, Luís Maltez da Costa, José Eduardo Pereira, Vítor Filipe, Pedro Alexandre Couto, Stefano Geuna, Paulo A Armada-Da-Silva, Ana Colette Maurício, Artur S P Varejão
Functional recovery following general nerve reconstruction is often associated with poor results. Comparing to rat and mice experimental studies, there are much fewer investigations on nerve regeneration and repair in the sheep, and there are no studies on this subject using gait analysis in the sheep model as an assessment tool. Additionally, this is the first study evaluating obstacle negotiation and the compensatory strategies that take place at each joint in response to the obstacle during locomotion in the sheep model...
August 14, 2018: Neurological Research
https://www.readbyqxmd.com/read/30105593/safety-and-side-effect-profile-of-intrathecal-morphine-in-a-diverse-patient-population-undergoing-total-knee-and-hip-arthroplasty
#16
Shane R Hess, Laura A Lahaye, Andrew C Waligora, Adam P Sima, William A Jiranek, Gregory J Golladay
Intrathecal morphine (ITM) can be useful for postoperative analgesia following lower extremity joint arthroplasty, but concerns exist regarding potential dose-related side effects. In this study, we examined the safety and efficacy of ITM in patients undergoing lower extremity joint arthroplasty. We hypothesized that there would be (1) direct relationship between dosing and side effects, and (2) an inverse relationship between ITM dosing and 24-hour postoperative opioid requirement.
August 13, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/30104943/systemic-lupus-erythematosus-is-a-risk-factor-for-complications-in-total-joint-arthroplasty
#17
J Joseph Gholson, Brandon G Wilkinson, Timothy S Brown, Yubo Gao, S Blake Dowdle, John J Callaghan
Introduction: Systemic Lupus Erythematosus (SLE) has been associated with increased complications following hip and knee arthroplasty. The Purpose of this study was to determine the extent to which SLE is a risk factor in outcomes following total joint arthroplasty (TJA). Methods: The nationwide inpatient sample was used to identify a cohort of 505,841 patients who had a total hip arthroplasty (THA) or total knee arthroplasty (TKA) between 2009-2011. Of these patients, 2,284 patients (0...
2018: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/30104568/effect-of-dual-task-on-gait-asymmetry-in-patients-after-anterior-cruciate-ligament-reconstruction
#18
Huijuan Shi, Hongshi Huang, Yuanyuan Yu, Zixuan Liang, Si Zhang, Bing Yu, Hui Liu, Yingfang Ao
Individuals who received anterior cruciate ligament (ACL) reconstruction surgeries demonstrated lower extremity movement asymmetries. The purpose of this study was to determine if psychological impairment was a contributor to lower extremity movement asymmetries in walking for individuals who received ACL reconstruction surgeries. Three-dimensional videographic and force plate data were collected for 25 males after unilateral ACL reconstruction performing walking without (single-task condition) and with the concurrent cognitive task (dual-task condition)...
August 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30104054/joint-moments-contributions-to-vertically-accelerate-the-center-of-mass-during-stair-ambulation-in-the-elderly-an-induced-acceleration-approach
#19
Vera Moniz-Pereira, Thomas M Kepple, Silvia Cabral, Filipa João, António P Veloso
Falls are a serious problem faced by the elderly. Older adults report mostly to fall while performing locomotor activities, especially the ones requiring stair negotiation. During these tasks, older adults, when compared with young adults, seem to redistribute their lower limb joint moments. This may indicate that older adults use a different strategy to accelerate the body upward during these tasks. The purposes of this study were to quantify the contributions of each lower limb joint moment to vertically accelerate the center of mass during stair ascent and descent, in a sample of community-dwelling older adults, and to verify if those contributions were correlated with age and functional fitness level...
August 4, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/30104053/predicting-the-influence-of-hip-and-lumbar-flexibility-on-lifting-motions-using-optimal-control
#20
Manish Sreenivasa, Matthew Millard, Idsart Kingma, Jaap H van Dieën, Katja Mombaur
Computational models of the human body coupled with optimization can be used to predict the influence of variables that cannot be experimentally manipulated. Here, we present a study that predicts the motion of the human body while lifting a box, as a function of flexibility of the hip and lumbar joints in the sagittal plane. We modeled the human body in the sagittal plane with joints actuated by pairs of agonist-antagonist muscle torque generators, and a passive hamstring muscle. The characteristics of a stiff, average and flexible person were represented by co-varying the lumbar range-of-motion, lumbar passive extensor-torque and the hamstring passive muscle-force...
July 29, 2018: Journal of Biomechanics
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