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https://www.readbyqxmd.com/read/29228407/-sport-after-total-knee-and-hip-arthroplasty
#1
Friedrich Boettner, Maximilian F Kasparek, Kilian Rueckl, Christian Liebau
The introduction of new materials and better implant coatings seems to provide the prerequisites for more intense physical activities after total joint arthroplasties of the lower extremity. Despite recent advances in implant design and materials, recommendations for sport after total joint arthroplasty have not been updated over the past 20 years. The introduction of modern uncemented fixation as well as highly cross-linked polyethylene into total hip arthroplasty allow for a more active life-style without an increased risk of loosening or complications...
December 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29227567/the-dog-is-a-model-for-the-study-of-human-hip-dysplasia
#2
Cecilia Pascual-Garrido, Farshid Guilak, Muhammad Farooq Rai, Michael D Harris, Mandi J Lopez, Rory J Todhunter, John C Clohisy
Developmental dysplasia of the hip (DDH) in humans is a common condition that is associated with hip pain, functional limitations, and secondary osteoarthritis (OA). Surgical treatment of DDH has improved in the last decade, allowing excellent outcomes at short- and mid-term follow-up. Still, the etiology, mechanobiology, and pathology underlying this disease are not well understood. A pre-clinical animal model of DDH could help advance the field with a deeper understanding of specific pathways that initiate hip joint degeneration secondary to abnormal biomechanics...
December 11, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29227355/basic-calcium-phosphate-crystal-associated-musculoskeletal-syndromes-an-update
#3
Ann K Rosenthal
PURPOSE OF REVIEW: Basic calcium phosphate (BCP) crystals are associated with two important musculoskeletal syndromes. Deposition of BCP crystals in tendons, bursae, and other soft tissues around joints causes calcific periarthritis, whereas intra-articular BCP crystals contribute to osteoarthritis and cause the highly destructive arthritis known as Milwaukee Shoulder Syndrome. The epidemiology and natural history of these syndromes are poorly understood, and because the pathogenesis remains unclear, few targeted therapies are available...
December 7, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/29227139/phenotypic-hip-and-elbow-dysplasia-trends-in-rottweilers-and-labrador-retrievers-in-south-africa-2007-2015-are-we-making-progress
#4
Robert M Kirberger
Canine hip and elbow dysplasia are major orthopaedic problems prevalent the world over, and South Africa is no exception. Hip and elbow dysplasia phenotypic status is certified by a number of different radiographic schemes in the world. South Africa uses the Fédération Cynologique Internationale system to certify hips, and the International Elbow Working Group scheme to certify elbows. One way of reducing these often crippling conditions is by selective breeding using only dogs with no or marginal dysplastic joints...
November 22, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/29226162/relationship-between-age-at-onset-of-symptoms-and-intraoperative-findings-in-hip-arthroscopic-surgery
#5
Carlos Suarez-Ahedo, Chengcheng Gui, Stephanie M Rabe, John P Walsh, Sivashankar Chandrasekaran, Benjamin G Domb
Background: Hip arthroscopic surgery is intended to treat multiple abnormalities in an effort to delay the progression to osteoarthritis, especially in young patients. However, the length of time in which patients experience joint pain before seeking a specialist for a diagnosis can delay hip preservation surgery and influence clinical outcomes. Purpose: To investigate the relationship between age at symptom onset and findings during hip arthroscopic surgery as well as outcomes after 2 years of clinical follow-up...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29224990/the-shift-to-same-day-outpatient-joint-arthroplasty-a-systematic-review
#6
REVIEW
Jeffrey D Hoffmann, Nicholas A Kusnezov, John C Dunn, Nicholas J Zarkadis, Gens P Goodman, Richard A Berger
BACKGROUND: Hip and knee arthroplasties length of stay continues to shorten after advances in perioperative and intraoperative management, as well as financial incentives. Some authors have demonstrated good results with outpatient arthroplasty, but safety and general feasibility of such procedures remain unclear. Our hypothesis is that outpatient arthroplasty would demonstrate higher readmission and complication rates than inpatient arthroplasty. METHODS: We performed a systematic review of all publications on outpatient arthroplasty between January 1, 2000 and June 1, 2016...
November 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29223876/joint-moments-required-to-hold-a-posture-while-somersaulting
#7
Joanne Mikl
A pure somersault is a key skill in diving and gymnastics, and involves rotation about the transverse axis of the body. As the rotational speed increases the effort required to maintain a specified posture increases. This paper derives equations for the joint moments required for an athlete to hold three sport specific postures as a function of rotational speed. The joint moment is related to the isometric muscular strength and is the limiting factor of an athlete in their ability to hold a fixed posture while somersaulting...
December 7, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29223445/brucella-infection-following-total-joint-arthroplasty-a-systematic-review-of-the-literature
#8
Seung-Ju Kim, Hyun-Soo Park, Dong-Woo Lee, Jong Hun Kim
INTRODUCTION: The aim of this systematic review was to analyze the results of published treatment options in Brucella infection following total joint arthroplasty (TJA). METHODS: We performed a systematic review of the literature regarding outcomes of Brucella infection after TJA (hip and knee). We searched multiple databases for articles in the area published from 1950 to 2016. RESULTS: A total of 18 patients (12 male and 6 female; mean age 59 years) from 14 published studies were identified...
December 6, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29223017/biceps-femoris-fascicle-length-during-passive-stretching
#9
Eleftherios Kellis
The purpose of this study was to quantify the relative changes in fascicle (FL) and muscle-tendon unit (LMTU) length of the long head of the biceps femoris (BFlh) at different combinations of hip and knee joint positions. Fourteen participants performed passive knee extension trials from 0°, 45° and 90° of hip flexion. FL, LMTU, pennation angle (PA) and effective FL (FL multiplied by the cosine of the PA) of the BFlh were quantified using ultrasonography (US). Three-way analysis of variance designs indicated that at each hip angle, FL and LMTU increased and PA decreased from 90° to 0° of knee flexion...
December 5, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29221903/discrete-element-analysis-is-a-valid-method-for-computing-joint-contact-stress-in-the-hip-before-and-after-acetabular-fracture
#10
Kevin C Townsend, Holly D Thomas-Aitken, M James Rudert, Andrew M Kern, Michael C Willey, Donald D Anderson, Jessica E Goetz
Evaluation of abnormalities in joint contact stress that develop after inaccurate reduction of an acetabular fracture may provide a potential means for predicting the risk of developing post-traumatic osteoarthritis. Discrete element analysis (DEA) is a computational technique for calculating intra-articular contact stress distributions in a fraction of the time required to obtain the same information using the more commonly employed finite element analysis technique. The goal of this work was to validate the accuracy of DEA-computed contact stress against physical measurements of contact stress made in cadaveric hips using Tekscan sensors...
November 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29221901/role-of-heel-lifting-in-standing-balance-recovery-a-simulation-study
#11
Kuangyou B Cheng, Hiroko Tanabe, Wen-Chien Chen, Hung-Ta Chiu
Although lifting the heels has frequently been observed during balance recovery, the function of this movement has generally been overlooked. The present study aimed to investigate the functional role of heel lifting during regaining balance from a perturbed state. Computer simulation was employed to objectively examine the effect of allowing/constraining heel lifting on balance performance. The human model consisted of 3 rigid body segments connected by frictionless joints. Movements were driven by joint torques depending on current joint angle, angular velocity, and activation level...
December 2, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29221839/cementless-one-stage-revision-in-chronic-periprosthetic-hip-joint-infection-ninety-one-percent-infection-free-survival-in-56-patients-at-minimum-2-year-follow-up
#12
Jeppe Lange, Anders Troelsen, Søren Solgaard, Kristian S Otte, Niels K Jensen, Kjeld Søballe
BACKGROUND: Cementless 1-stage revision in chronic periprosthetic hip joint infections is limited evaluated. The purpose of this study was to evaluate a specific treatment protocol in this patient group. METHODS: The study was performed as a multicenter, proof-of-concept, observational study with prospective data collection. Patients were treated with a cementless 1-stage revision according to the CORIHA protocol between 2009 and 2014. Fifty-six patients, McPherson type III-A/B-1/2, were enrolled with a mean follow-up time from the CORIHA procedure of 4 years (minimum of 2 years)...
November 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29221427/validity-of-the-dutch-modified-paindetect-questionnaire-for-patients-with-hip-or-knee-osteoarthritis
#13
Wietske Rienstra, Tim Blikman, Baukje Dijkstra, Jos van Raay, Geranda Slager, Sjoerd Bulstra, Martin Stevens, Inge van den Akker-Scheek
BACKGROUND: The modified painDETECT questionnaire (PDQ) is a self-reported questionnaire to discriminate between nociceptive and neuropathic-like pain in patients with knee/hip osteoarthritis (OA). This study aims to assess the structural and construct validity of this questionnaire. METHODS: Confirmatory factor analysis and hypothesis-testing was used. For 168 patients, predefined hypotheses were formulated on the correlation between the modified painDETECT and several other questionnaires, and in a subsample of 46 with pain pressure thresholds (PPTs)...
December 8, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29218685/patient-reported-quality-of-life-and-hip-function-after-2-stage-revision-of-chronic-periprosthetic-hip-joint-infection-a-cross-sectional-study
#14
Ninna R Poulsen, Inger Mechlenburg, Kjeld Søballe, Jeppe Lange
INTRODUCTION: Very limited information is available regarding patient-reported health-related quality of life (HRQoL) and hip function following treatment for chronic periprosthetic hip joint infection (PJI). Patient-reported outcome measures provide essential information to clinicians of the impact a treatment have on patient's lives. The purpose of this study was to examine patient reported HRQoL and hip function after a completed re-implantation in a 2-stage revision. METHOD: 82 patients were identified retrospectively in the National Patient Register...
December 4, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29218309/kinematic-changes-during-prolonged-fast-walking-in-old-and-young-adults
#15
Camila Fonseca Oliveira, Edgar Ramos Vieira, Filipa Manuel Machado Sousa, João Paulo Vilas-Boas
Walking biomechanics is known to be influenced by speed. However, most of the research examining the effects of walking speed and gait characteristics has been conducted after a fast-walking task, neglecting the changes that may occur during the task. The aim of the present study was to determine the impact of fast-walking over time on kinematics in young and old adults. Twenty-seven young adults (26.6 ± 6.0 years) and 23 old adults (71.0 ± 5.6 years) walked at 70% of their maximum heart rate for 20 min or until exhaustion, and the effects of fast-walking on temporospatial parameters and on angular kinematics were analyzed during the activity...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29216915/rheumatoid-arthritis-bone-marrow-environment-supports-th17-response
#16
Ewa Kuca-Warnawin, Weronika Kurowska, Monika Prochorec-Sobieszek, Anna Radzikowska, Tomasz Burakowski, Urszula Skalska, Magdalena Massalska, Magdalena Plebańczyk, Barbara Małdyk-Nowakowska, Iwona Słowińska, Robert Gasik, Włodzimierz Maśliński
BACKGROUND: Rheumatoid arthritis (RA) is a systemic, autoimmune disease leading to joint destruction and ultimately disability. Bone marrow (BM) is an important compartment in RA, where pathological processes from "outside the joint" can occur. IL-17 is a cytokine that exerts proinflammatory effects and participates in the process of bone destruction. It is believed that IL-17 is involved in pathogenesis of RA. However, little is known about the biology of this cytokine in BM. In the present study we investigated Th17-related cytokines in RA BM...
December 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29216704/-prevalence-of-x-ray-signs-of-femoroacetabular-impingement-in-mexican-population
#17
R Gutiérrez-Ramos, S A Ávalos-Calderón, L A Bahena-Peniche
BACKGROUND: Femoroacetabular impingement (FAI) is a suggested diagnosis for pain in the hip in the absence of other apparent causes. It is thought to be a cause of progressive arthrosis of the hip. Our objective was to determine the prevalence of radiographic data of FAI in the adult population without hip pathology over a period of six months. MATERIAL AND METHODS: Analytical, observational, multicentric, ambispective and transverse study based on digital X-rays analysis...
May 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29215382/initial-treatment-in-septic-arthritis-medical-versus-surgical-approach-an-8-year-single-center-in-spain-experience
#18
Bryan Josué Flores-Robles, Mercedes Jiménez Palop, Abel Alejandro Sanabria Sanchinel, Robert Francis Andrus, Ana Royuela Vicente, Marta Isabel Sanz Pérez, María Espinosa Malpartida, Consuelo Ramos Giráldez, Carolina Merino Argumanez, Luis Fernando Villa Alcázar, José Luis Andréu Sánchez, Hildegarda Godoy Tundidor, José Campos Esteban, Jesús Sanz Sanz, Carmen Barbadillo Mateos, Carlos Isasi Zaragoza, Juan Mulero Mendoza
OBJECTIVE: The aim of this study was to compare the functional results of 2 different procedure types, medical or surgical, which are used in treating native joint septic arthritis. METHODS: In this retrospective cohort study, we reviewed clinical registries of patients admitted to a single third-level hospital with the diagnosis of septic arthritis during the period of January 1, 2008, to January 31, 2016. RESULTS: A total of 63 cases of septic arthritis were identified in which the initial approach for 49 patients was medical (arthrocentesis), whereas the initial approach for 14 patients was surgical (arthroscopy or arthrotomy)...
December 5, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29214168/how-well-can-modern-nonhabitual-barefoot-youth-adapt-to-barefoot-and-minimalist-barefoot-technology-shoe-walking-in-regard-to-gait-symmetry
#19
Y Xu, Q Hou, C Wang, T Simpson, B Bennett, S Russell
We aim to test how well modern nonhabitual barefoot people can adapt to barefoot and Minimalist Bare Foot Technology (MBFT) shoes, in regard to gait symmetry. 28 healthy university students (22 females/6 males) were recruited to walk on a 10-meter walkway randomly on barefoot, in MBFT shoes, and in neutral running shoes at their comfortable walking speed. Kinetic and kinematic data were collected using an 8-camera motion capture system. Data of joint angles, joint forces, and joint moments were extracted to compute a consecutive symmetry index...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29212695/corrigendum
#20
(no author information available yet)
Mohaddes M, Shareghi B, Kärrholm J. Promising early results for trabecular metal acetabular components used at revision total hip arthroplasty. Bone Joint J 2017;99-B:880-886.
December 2017: Bone & Joint Journal
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