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https://www.readbyqxmd.com/read/29780158/evaluation-of-the-factors-affecting-concerns-and-expectations-of-patients-undergoing-total-knee-arthroplasty-in-china
#1
Yang Li, Hong Cai, Hua Tian, Ke Zhang
BACKGROUND The aim of this study was to assess the level of concern and expectations of patients and their families of total knee arthroplasty (TKA), peri-operative procedures, postoperative rehabilitation, and outcome in a Chinese population. MATERIAL AND METHODS The study recruited 133 patients with osteoarthritis, scheduled to undergo primary elective TKA. Before surgery, the surgeon completed the Hospital for Special Surgery (HSS) Knee Score questionnaire on pain, function, range of motion (ROM), and muscle strength...
May 21, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29768094/lower-limb-stiffness-testing-in-athletic-performance-a-critical-review
#2
Sean J Maloney, Iain M Fletcher
Stiffness describes the resistance of a body to deformation. In regard to athletic performance, a stiffer leg-spring would be expected to augment performance by increasing utilisation of elastic energy. Two-dimensional spring-mass and torsional spring models can be applied to model whole-body (vertical and/or leg stiffness) and joint stiffness. Various tasks have been used to characterise stiffness, including hopping, gait, jumping, sledge ergometry and change of direction tasks. Appropriate levels of reliability have been reported in most tasks, although they vary between investigations...
May 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29767270/no-correlation-between-rotation-of-femoral-components-in-the-transverse-plane-and-clinical-outcome-after-total-knee-arthroplasty
#3
Roland Becker, Katharina Bäker, Hagen Hommel, Manfred Bernard, Sebastian Kopf
PURPOSE: It was hypothesized that malrotation of femoral component in total knee arthroplasty (TKA) will significantly impact clinical outcome. METHODS: Eighty-eight consecutive patients with primary osteoarthritis of the knee were prospectively evaluated. They received a cemented posterior stabilized TKA (NexGen, Zimmer/Biomet® Inc., Warsaw, IN, USA). The femoral component was placed in 3° of external rotation referenced to the posterior condylar line. Postoperatively, a CT scan was performed to evaluate rotation of femoral component in the transverse plane...
May 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29765416/combating-osteoarthritis-through-stem-cell-therapies-by-rejuvenating-cartilage-a-review
#4
REVIEW
Navneet Kumar Dubey, Viraj Krishna Mishra, Rajni Dubey, Shabbir Syed-Abdul, Joseph R Wang, Peter D Wang, Win-Ping Deng
Knee osteoarthritis (OA) is a chronic degenerative disorder which could be distinguished by erosion of articular cartilage, pain, stiffness, and crepitus. Not only aging-associated alterations but also the metabolic factors such as hyperglycemia, dyslipidemia, and obesity affect articular tissues and may initiate or exacerbate the OA. The poor self-healing ability of articular cartilage due to limited regeneration in chondrocytes further adversely affects the osteoarthritic microenvironment. Traditional and current surgical treatment procedures for OA are limited and incapable to reverse the damage of articular cartilage...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29764447/efficacy-of-intra-articular-hypertonic-dextrose-prolotherapy-versus-normal-saline-for-knee-osteoarthritis-a-protocol-for-a-triple-blinded-randomized-controlled-trial
#5
Regina Wing Shan Sit, Ricky Wing Keung Wu, Kenneth Dean Reeves, David Rabago, Dicken Cheong Chun Chan, Benjamin Hon Kei Yip, Vincent Chi Ho Chung, Samuel Yeung Shan Wong
BACKGROUND: Knee Osteoarthritis (KOA) is a very common condition with prevalence rising with age. It is a major contributor to global disability and has a large socioeconomic burden worldwide. Conservative therapies have marginal effectiveness, and surgery is reserved for severe symptomatic KOA. Dextrose Prolotherapy (DPT) is an evidence-based injection-based therapy for chronic musculoskeletal conditions including KOA. The standard "whole joint" injection method includes intra-articular injection and multiple extra-articular injections at soft tissue bony attachments...
May 15, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29763815/gait-pathology-subtypes-are-not-associated-with-self-reported-fall-frequency-in-children-with-cerebral-palsy
#6
Elizabeth R Boyer, Aleksys Patterson
BACKGROUND: Trips and falls are common concerns reported by parents of children with cerebral palsy. Specific gait pathologies (excessive internal hip rotation, intoeing, and stiff knee gait) are anecdotally associated with higher rates of falls. RESEARCH QUESTION: Is fall frequency higher for the aforementioned gait pathologies? METHODS: Parent-reported fall frequency from 1063 children with cerebral palsy who also had a three-dimensional gait analysis was retrospectively reviewed...
May 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29762282/uncemented-tantalum-monoblock-tibial-fixation-for-total-knee-arthroplasty-in-patients-less-than-60-years-of-age-mean-10-year-follow-up
#7
Christopher J DeFrancesco, José A Canseco, Charles L Nelson, Craig L Israelite, Atul F Kamath
BACKGROUND: Although tibial component loosening has been considered a concern after total knee arthroplasty without cement, such implants have been used in younger patients because of the potential for ingrowth and preservation of bone stock. However, mid-term and long-term studies of modern uncemented implants are lacking. We previously reported promising prospective 5-year outcomes after using an uncemented porous tantalum tibial component in patients who underwent surgery before the age of 60 years...
May 16, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29761638/ultra-sound-guided-neurolysis-of-six-genicular-nerves-of-knee-for-intractable-pain-from-knee-osteoarthritis-a-case-series
#8
Arif Ahmed, Divesh Arora
INTRODUCTION: Among the elderly populations, the chronic osteoarthritis of knee joint is one of the leading cause of disability and causes considerable pain, joint stiffness and functional limitations. Although knee replacement is a good option for the grade IV osteoarthritis, but many patients failed to undergo surgery due to co-morbidities or other reasons. METHODS: Four patient with severe pain from grade III and IV osteoarthritis of knee joint had underwent ultrasound guided alcohol neurolysis of the six genicular nerves of knee joint after a positive genicular nerve block with local anesthetics...
May 14, 2018: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/29761054/is-high-intensity-interval-cycling-feasible-and-more-beneficial-than-continuous-cycling-for-knee-osteoarthritic-patients-results-of-a-randomised-control-feasibility-trial
#9
Justin W Keogh, Josephine Grigg, Christopher J Vertullo
Background: Knee osteoarthritis (OA) patients often suffer joint pain and stiffness, which contributes to negative changes in body composition, strength, physical performance (function), physical activity and health-related quality of life. To reduce these symptoms and side effects of knee OA, moderate-intensity continuous training (MICT) cycling is often recommended. While resistance training is considered the optimal form of training to improve sarcopenic outcomes, it imposes higher joint loads and requires supervision, either initially or continuously by trained exercise professionals...
2018: PeerJ
https://www.readbyqxmd.com/read/29748697/increased-symptoms-of-stiffness-1-year-after-total-knee-arthroplasty-are-associated-with-a-worse-functional-outcome-and-lower-rate-of-patient-satisfaction
#10
N D Clement, M Bardgett, D Weir, J Holland, D J Deehan
PURPOSE: Symptoms of stiffness after total knee arthroplasty (TKA) cause significant morbidity, but there is limited data to facilitate identification of those most at risk after surgery. Stratifying risk can aid earlier directed treatment options. METHODS: A retrospective cohort consisting of 2589 patients undergoing a primary TKA was identified from an established arthroplasty database. Patient demographics, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and short form (SF) 12 scores were collected pre-operatively and 1 year post-operatively...
May 10, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29748141/short-term-functional-advantages-after-medial-unicompartmental-versus-total-knee-arthroplasty
#11
Bernd Friesenbichler, Julia F Item-Glatthorn, Vanessa Wellauer, Fabian von Knoch, Nicola C Casartelli, Nicola A Maffiuletti
BACKGROUND: There are many uncertainties about the advantages and disadvantages of using unicompartmental (UKA) versus total knee arthroplasty (TKA) to treat patients with knee osteoarthritis. It is important to have sufficient early postoperative quadriceps strength for long-term, self-reported and gait-related outcomes after knee arthroplasty, but very limited comparative data exist regarding UKA and TKA patients. METHODS: This study assessed isometric quadriceps strength, spatio-temporal gait parameters (walking speed, step length, single-limb support phase) and self-reported outcomes (pain, function, stiffness) in 18 TKA and 18 UKA patients six months after surgery, as well as in 18 healthy controls...
May 7, 2018: Knee
https://www.readbyqxmd.com/read/29746965/spine-and-lower-extremity-kinematics-during-gait-in-cervical-spondylotic-myelopathy-patients
#12
Ram Haddas, Sujal Patel, Raj Arakal, Akwasi Boah, Theodore Belanger, Kevin L Ju
BACKGROUND CONTEXT: CSM typically manifests with a slow, progressive stepwise decline in neurologic function, including hand clumsiness and balance difficulties. Gait disturbances are frequently seen in CSM patients, with more advanced cases exhibiting a stiff, spastic gait. PURPOSE: To evaluate the spatiotemporal parameters and spine and lower extremity kinematics during the gait cycle of adult cervical spondylotic myelopathy (CSM) patients prior to surgical intervention...
May 7, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29742468/native-septic-arthritis-is-not-an-immediate-surgical-emergency
#13
Nicolas Lauper, Marie Davat, Ergys Gjika, Camillo Müller, Wilson Belaieff, Didier Pittet, Benjamin A Lipsky, Didier Hannouche, Ilker Uçkay
Acute native joint septic arthritis is generally considered a surgical emergency, requiring drainage within hours, including during night, weekend or holiday shifts. However, there are few data supporting the need for the disruption caused by this degree of urgency. METHODS: We performed a retrospective review of all adult patients seen in our medical center from 1997-2015 with culture-proven septic arthritis and noted the epidemiology of sequelae, and their possible association with a delay in surgical drainage...
May 6, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29733680/change-in-koos-and-womac-scores-in-a-young-athletic-population-with-and-without-anterior-cruciate-ligament-injury
#14
Ivan J Antosh, Steven J Svoboda, Karen Y Peck, E'Stephan J Garcia, Kenneth L Cameron
BACKGROUND: Several studies have examined changes in patient-reported outcome measures (PROMs) after anterior cruciate ligament (ACL) injury, but no studies to date have prospectively evaluated changes from preinjury baseline through injury and follow-up among ACL-injured patients compared to the baseline and follow-up changes of uninjured patients. PURPOSE: To examine changes in PROMs over time from preinjury baseline to at least 2 years after ACL reconstruction and to compare these changes with those of an uninjured control group having similar physical activity requirements...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29730804/model-based-analysis-of-fatigued-human-knee-extensors-effects-of-isometrically-induced-fatigue-on-hill-type-model-parameters-and-ballistic-contractions
#15
Harald Penasso, Sigrid Thaller
This study investigated the effect of isometrically induced fatigue on Hill-type muscle model parameters and related task-dependent effects. Parameter identification methods were used to extract fatigue-related parameter trends from isometric and ballistic dynamic maximum voluntary knee extensions. Nine subjects, who completed ten fatiguing sets, each consisting of nine 3 s isometric maximum voluntary contractions with 3 s rest plus two ballistic contractions with different loads, were analyzed. Only at the isometric task, the identified optimized model parameter values of muscle activation rate and maximum force generating capacity of the contractile element decreased from [Formula: see text] to [Formula: see text] Hz and from [Formula: see text] to [Formula: see text] N, respectively...
May 5, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29727868/arthroscopic-treatment-of-diffuse-pigmented-villonodular-synovitis-of-the-knee-complete-synovectomy-and-septum-removal-midterm-results
#16
Sohrab Keyhani, Seyyed Morteza Kazemi, Jin Hwan Ahn, René Verdonk, Mehran Soleymanha
The purpose of this study was to evaluate and describe the clinical results of complete arthroscopic synovectomy through the four arthroscopic portals in the knees affected by diffuse pigmented villonodular synovitis (DPVNS). Between 2009 and 2012, 21 patients (15 men and 6 women) with the diffuse form of PVNS of the knee were enrolled in the study after qualification. The clinical diagnosis was confirmed by magnetic resonance imaging and postsurgical pathologic examination. All patients underwent complete synovectomy through posteromedial, posterolateral, anteromedial, and anterolateral portals...
May 4, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29724537/confirmation-bias-affects-user-perception-of-knee-braces
#17
Brittany Balsamo, Mark D Geil, Rebecca Ellis, Jianhua Wu
Technological advances in orthopedic devices such as prostheses and orthoses are intended to improve function but may also result in increased complexity and expense. Consequently, accurate determination of effectiveness is important. When devices with advanced technology are used, it is possible that confirmation bias - the tendency for a user to actually experience what he or she expects to experience - will influence outcomes. This study assessed confirmation bias in 18 healthy young adults walking in knee braces...
April 25, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29709007/chikungunya-virus-infection-in-aruba-diagnosis-clinical-features-and-predictors-of-post-chikungunya-chronic-polyarthralgia
#18
Ralph Huits, Jaclyn De Kort, Riemsdijk Van Den Berg, Luis Chong, Achilleas Tsoumanis, Kaat Eggermont, Koen Bartholomeeusen, Kevin K Ariën, Jan Jacobs, Marjan Van Esbroeck, Emmanuel Bottieau, Lieselotte Cnops
BACKGROUND: Chikungunya virus (CHIKV) emerged in Aruba for the first time in 2014. We studied the clinical presentation of acute CHIKV infection and the contribution of serologic and molecular assays to its diagnosis. In a cohort of confirmed CHIKV cases, we analysed the frequency, duration and predictors of post-chikungunya chronic polyarthralgia (pCHIK-CPA), defined as joint pains lasting longer than 6 weeks or longer than 1 year. METHODOLOGY: Patient sera obtained within 10 days of symptom onset were tested for CHIKV, using an indirect immunofluorescence test for the detection of CHIKV-specific Immunoglobulin M (IgM) and post-hoc, by reverse-transcription polymerase chain reaction (RT-PCR)...
2018: PloS One
https://www.readbyqxmd.com/read/29708568/preoperative-vitamin-d-deficiency-is-associated-with-higher-postoperative-complication-rates-in-total-knee-arthroplasty
#19
Vishal Hegde, Armin Arshi, Christopher Wang, Zorica Buser, Jeffrey C Wang, Andrew R Jensen, John S Adams, Erik N Zeegen, Nicholas M Bernthal
The purpose of this study was to determine the relative incidence of postoperative complications in 25-hydroxyvitamin D (25D)-deficient and -sufficient patients undergoing total knee arthroplasty (TKA). Patients who were either serum 25D deficient (25D <20 ng/mL) or 25D sufficient (25D ≥20 ng/mL) 90 days prior to primary TKA from 2007 to 2016 were identified using the Humana administrative claims registry. The incidence of postoperative medical and surgical complications was determined by querying for relevant International Classification of Diseases, Ninth Revision and Current Procedural Terminology codes...
April 27, 2018: Orthopedics
https://www.readbyqxmd.com/read/29705681/midlevel-constraint-without-stem-extensions-in-primary-total-knee-arthroplasty-provides-stability-without-compromising-fixation
#20
David A Crawford, Jesua I Law, Adolph V Lombardi, Keith R Berend
BACKGROUND: Many total knee arthroplasty (TKA) systems allow for so-called midlevel constraint (MLC) articular bearings that can be used with primary implants. The purpose of this study is to report the early outcomes with MLC bearings in primary TKA. MATERIALS/METHODS: From December 2005 to June 2015, minimum 2-year follow-up was available on 96 patients (103 TKA) who underwent primary TKA with an MLC bearing using the Vanguard Total Knee System. Outcomes included pain, Knee Society clinical and functional score, range of motion, and need for revision...
April 9, 2018: Journal of Arthroplasty
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