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osteoarthrosis

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https://www.readbyqxmd.com/read/29037894/indentation-mapping-reveals-poroelastic-but-not-viscoelastic-properties-spanning-native-zonal-articular-cartilage
#1
Joseph A Wahlquist, Frank W DelRio, Mark A Randolph, Aaron H Aziz, Chelsea M Heveran, Stephanie J Bryant, Corey P Neu, Virginia L Ferguson
Osteoarthrosis is a debilitating disease affecting millions, yet engineering materials for cartilage regeneration has proven difficult because of the complex microstructure of this tissue. Articular cartilage, like many biological tissues, produces a time-dependent response to mechanical load that is critical to cell's physiological function in part due to solid and fluid phase interactions and property variations across multiple length scales. Recreating the time-dependent strain and fluid flow may be critical for successfully engineering replacement tissues but thus far has largely been neglected...
October 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28979851/electron-probe-microanalysis-%C3%B0-f-experimentally-stimulated-osteoarthrosis-in-dogs
#2
Tatyana Stupina, Michael Shchudlo, Michael Stepanov
AIM: To develop methods of articular cartilage preparation for X-ray-electron probe microanalysis and to study its elements content in experimental osteoarthrosis. METHODS: Twenty dogs aged 2-8 years were divided in research (aged 2 years, induction of osteoarthrosis - IOA) and intact group. Intact group included three subgroups (aged 2, 5 and 8 years). Samples of cartilage after araldite saturation and pouring were partially cut into semithin sections stained with methylene blue and with methylene blue-basic fuchsin...
September 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28966039/temporomandibular-disorder-otologic-implications-and-its-relationship-to-sleep-bruxism
#3
Bruno Gama Magalhães, Jaciel Leandro de Melo Freitas, André Cavalcanti da Silva Barbosa, Maria Cecília Scheidegger Neves Gueiros, Simone Guimarães Farias Gomes, Aronita Rosenblatt, Arnaldo de França Caldas Júnior
INTRODUCTION: Temporomandibular disorder is an umbrella term for various clinical problems affecting the muscles of mastication, temporomandibular joint and associated structures. This disorder has a multifactor etiology, with oral parafunctional habits considered an important co-factor. Among such habits, sleep bruxism is considered a causal agent involved in the initiation and/or perpetuation of temporomandibular disorder. That condition can result in pain otologic symptoms. OBJECTIVE: The aim of the present study was to investigate the relationship between temporomandibular disorder and both otologic symptoms and bruxism...
August 23, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28920791/femoral-head-resection-in-two-livingstone-s-fruit-bats-pteropus-livingstonii
#4
Alberto Rodriguez Barbon, Peter Rushton-Taylor, Edward Bell, Andrew Routh
Two Livingstone's fruit bats (Pteropus livingstonii) presented with a unilateral partial paresis of the hind limbs. Radiographs revealed luxation of the coxofemoral joint and degenerative joint disease in the right coxofemoral joint in one case. The second case presented with recurrent luxation of the coxofemoral joint with osteoarthrosis of the femoral head. Clinical findings in both cases led to a decision to perform a femoral head resection. The performed surgery led to the recovery of normal function of the limb without any complications in both cases...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28913398/total-femur-arthroplasty-for-revision-hip-failure-in-osteogenesis-imperfecta-limits-of-biology
#5
Pablo Sanz-Ruiz, Manuel Villanueva-Martinez, Jose Antonio Calvo-Haro, Esther Carbó-Laso, Javier Vaquero-Martín
Osteogenesis imperfecta (OI) is a rare congenital disease characterized by alterations in bone quality, with susceptibility to fractures, instability, deformities, and osteoarthrosis. Prosthetic surgery in these patients is associated with an abnormally high rate of implant failures. On the other hand, abnormal bone fragility adds to the complexity of revision surgery in such individuals-thus representing a genuine challenge for the orthopaedic surgeon. We present a case of femoral reconstruction in a patient with OI and prosthetic loosening after reconstruction secondary to femoral septic pseudoarthrosis...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28904969/sociodemographic-and-clinical-characteristics-of-centenarians-in-mexico-city
#6
Valdés-Corchado Pedro, Ruiz-Hernández Arturo, Pérez-Moreno Alejandro, Rosas-Carrasco Oscar
BACKGROUND: There is little evidence about the demography and health status of adults aged 100 years and over in Latin America and there are no studies in Mexico. OBJECTIVES: To describe the demographic characteristics and health status of centenarians residing in Mexico City. METHODS: This is a cross-sectional study using a population base of 393 community-dwelling centenarians in Mexico City. A comprehensive geriatric assessment was performed, including demographic information and health status...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28888229/changes-in-ankle-joint-motion-after-supramalleolar-osteotomy-a-cadaveric-model
#7
Hak Jun Kim, Eui Dong Yeo, Im Joo Rhyu, Soon-Hyuck Lee, Yeon Soo Lee, Young Koo Lee
BACKGROUND: Malalignment of the ankle joint has been found after trauma, by neurological disorders, genetic predisposition and other unidentified factors, and results in asymmetrical joint loading. For a medial open wedge supramalleolar osteotomy(SMO), there are some debates as to whether concurrent fibular osteotomy should be performed. We assessed the changes in motion of ankle joint and plantar pressure after supramalleolar osteotomy without fibular osteotomy. METHODS: Ten lower leg specimens below the knee were prepared from fresh-frozen human cadavers...
September 9, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28868088/chondral-defects-of-the-glenohumeral-joint-long-term-outcome-after-microfracturing-of-the-shoulder
#8
Sophia M Hünnebeck, Petra Magosch, Peter Habermeyer, Markus Loew, Sven Lichtenberg
INTRODUCTION: An increasing number of young patients are diagnosed with chondral lesions. Minimally invasive surgical techniques are important in order to delay progression of the early stages of osteoarthritis and the need for total joint replacement. MATERIALS AND METHODS: Patients (n = 32) who had received microfracturing of the shoulder were retrospectively enrolled, of whom 5 had received shoulder replacements after a mean time of 47 months. Of these patients, 23 completed the Disabilities of the Arm, Shoulder and Hand (DASH) and Constant-Murley Scores in addition to an additional subjective questionnaire...
2017: Obere Extremität
https://www.readbyqxmd.com/read/28861285/pattern-analysis-of-patients-with-temporomandibular-disorders-resulting-from-unilateral-mastication-due-to-chronic-periodontitis
#9
Hye-Mi Jeon, Yong-Woo Ahn, Sung-Hee Jeong, Soo-Min Ok, Jeomil Choi, Ju-Youn Lee, Ji-Young Joo, Eun-Young Kwon
PURPOSE: The purpose of the present study was to perform a pattern analysis in patients with temporomandibular disorder (TMD) resulting from unilateral mastication due to chronic periodontitis. METHODS: Thirty participants with signs or symptoms of TMD who engaged in unilateral mastication due to periodontitis-related discomfort (test group) were selected. Another 30 subjects exhibiting signs or symptoms of TMD resulting from unilateral mastication not due to chronic periodontitis (control group) were also recruited...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28829651/experiences-with-osteoligamentoplasty-according-to-weiss-for-the-treatment-of-scapholunate-dissociation
#10
W Petersen, J Rothenberger, H E Schaller, A Rahmanian-Schwarz, M Held
BACKGROUND: In post-traumatic, dynamic, or static scapholunate (SL) instability, an SL ligament reconstruction is advisable to avoid long-term complications. However, a sufficient primary reconstruction is best achieved in acute injuries. For chronic SL dissociation, there is still no satisfying standard surgical technique. In this context, we evaluated the clinical outcome of Weiss's osteoligamentoplasty as a treatment option. METHODS: Over a three-year period, 16 patients with chronic and symptomatic SL dissociation Grade-II and III, without the signs of osteoarthrosis were, surgically treated using a bone-retinaculum-bone autograft from the distal radius...
August 22, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28809636/-arthroscopic-finding-of-knee-joint-in-relation-to-age-and-its-comparison-with-pre-operative-clinical-finding-a-retrospective-study
#11
P Látal, K Šimeček, M Kloub
PURPOSE OF THE STUDY In the retrospective study of two South Bohemian centres we present the comparison of pre-operative anamnestic clinical signs in relation to the arthroscopic intraoperative finding. The obtained data is used also to evaluate the arthroscopic finding in relation to age and sex. MATERIAL AND METHODS The arthroscopic findings of patients who underwent surgery in 2013-2014 period (1.1.2013-31.12.2014) at the Department of Trauma Surgery of České Budějovice Hospital, a.s. and in 2014 (1.1...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28759525/ultrasound-and-pet-ct-correlation-in-shoulder-pathology-a-5-year-retrospective-analysis
#12
Christopher J Burke, William R Walter, Ronald S Adler, James S Babb, Joseph Sanger, Fabio Ponzo
PURPOSE: To correlate shoulder ultrasound and radiography with F-FDG PET-CT to establish FDG uptake and therefore range of metabolic activity, as defined by SUV analysis, in various symptomatic shoulder pathologies. METHODS: Retrospective database query was performed for shoulder ultrasound and PET-CT scans between January 2012 and January 2017. Patients who had both studies within 1 year were included. Age- and sex-matched control patients with PET-CT scans only were also included...
October 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28752939/effect-of-organic-silicon-methylsulfonylmethane-and-glucosamine-sulfate-in-mandibular-bone-defects-in-rats
#13
Flávia Santiago de Sousa Rosa, Rúbia Teodoro Stuepp, Filipe Modolo, Michelle Tillmann Biz
Organic silicon (OS), glucosamine sulfate (GS), and methylsulfonylmethane (MSM) have been related to bone and connective tissue health and have been considered as basic therapy for osteoarthrosis disorders. Therefore, the aim was to analyze the effect of the association of these three components in mandibular bone defects in rats. Nine rats were used for histocompatibility test. In each animal was implanted the composition (70% OS, 15% GS, 15% MSM) and gutta percha (control) under the dorsal subcutaneous tissue...
November 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28719981/the-mental-representation-of-the-human-gait-in-patients-with-severe-knee-osteoarthrosis-a-clinical-study-to-aid-understanding-of-impairment-and-disability
#14
Robert Jacksteit, Anett Mau-Moeller, Martin Behrens, Rainer Bader, Wolfram Mittelmeier, Ralf Skripitz, Tino Stöckel
OBJECTIVE: Objectives were (1) to explore differences in gait-specific long-term memory structures and gait performance between knee osteoarthrosis patients and healthy subjects and (2) to identify the extent to which the gait-specific mental representation is associated with gait performance. DESIGN: Cross-sectional study. SUBJECTS: In total, 18 knee osteoarthrosis patients and 18 control subjects. METHODS: Spatio-temporal (gait speed, step length) and temporophasic (stance time, swing time, single support time, total double support time) gait parameters and gait variability were measured with an electronic walkway (OptoGait)...
July 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28703117/early-diagnostics-of-temporomandibular-joint-structural-elements-injures-caused-by-traumatic-mandibular-bone-fractures
#15
Kh R Pohranychna, A R Stasyshyn, U D Matolych
A rapidly increasing number of mandibular condylar fractures and some complications related to injuries of temporomandibular elements make this study important. Intra-articular disorders lead to secondary pathological findings such as osteoarthritis, deforming osteoarthrosis, and temporomandibular joint ankylosis that limits mouth opening, mastication, swallowing, breathing, and decreased/lost working capacity or disability. Early diagnosis of intra-articular disorders can prevent from long-lasting functional complications caused by temporomandibular joint injuries...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28699710/-%C3%A2-my-joints-are-cracking-is-it-serious-doctor-%C3%A2-a-review-about-sounds-produced-by-joints
#16
Mathieu Saubade, Christos Karatzios, Emilie Léonard, Cyril Besson, Gérald Gremion, Vincent Gremeaux
The sounds produced by joints are a common source of questioning for doctors and their patients. Two major types are identified : cracks and crepitus. Few investigations have been carried out on these manifestations, while they potentially have clinical implications, especially for patellar crepitus in patellofemoral osteoarthrosis, and may generate anxiety. Knuckle cracking appears to be caused by the sudden and temporary occurrence of an intra-articular gaseous cavity, called tribonucleation. Other researches on these sounds are focused on the knees and their links with osteoarthritis, as well as on the spine...
July 12, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28699681/occurrence-of-signs-of-osteoarthritis-arthrosis-in-the-temporomandibular-joint-on-panoramic-radiographs-in-swedish-women
#17
Karin Bäck, Margareta Ahlqwist, Magnus Hakeberg, Lars Dahlström
OBJECTIVES: To determine the prevalence and incidence of radiographic signs of osteoarthritis/osteoarthrosis (OA) in the temporomandibular joint (TMJ) among middle-aged and older women. METHODS: Data were collected from ongoing representative, longitudinal and repeated cross-sectional studies in Gothenburg, Sweden. Panoramic radiographs (PAN) have been taken regularly since 1968. The cohorts were systematically selected from the female population at the ages of 38, 50, 62 and 74...
July 12, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28682304/-treatment-satisfaction-in-primary-care-patients-with-osteoarthrosis
#18
Carmen Llanos Val Jiménez, Jesús López-Torres Hidalgo, Eva María García Atienza, María Soledad Navarro Ruiz, Inmaculada Hernández Cerón, Lorena Moreno de la Rosa
OBJECTIVE: As in other chronic problems, the approach of the patient with osteoarthritis tends to a shared decision-making model, in which the patient's point of view must be considered in the choice of treatment. The objetive was to evaluate treatment satisfaction in patients with osteoarthritis and to verify if there are differences between different pharmacological options, as well as to determine if there is any association with functional status and clinical and sociodemographic characteristics...
July 7, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28674537/increased-il-15-production-and-accumulation-of-highly-differentiated-cd8-effector-memory-t-cells-in-the-bone-marrow-of-persons-with-cytomegalovirus
#19
Luca Pangrazzi, Erin Naismith, Andreas Meryk, Michael Keller, Brigitte Jenewein, Klemens Trieb, Beatrix Grubeck-Loebenstein
Cytomegalovirus (CMV) has been described as a contributor to immunosenescence, thus exacerbating age-related diseases. In persons with latent CMV infection, the CD8(+) T cell compartment is irreversibly changed, leading to the accumulation of highly differentiated virus-specific CD8(+) T cells in the peripheral blood. The bone marrow (BM) has been shown to play a major role in the long-term survival of antigen-experienced T cells. Effector CD8(+) T cells are preferentially maintained by the cytokine IL-15, the expression of which increases in old age...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28659058/diagnosis-and-treatment-of-developmental-dysplasia-of-the-hip-a-current-practice-of-paediatric-orthopaedic-surgeons
#20
Rakan S Al-Essa, Fares H Aljahdali, Rakan M Alkhilaiwi, Winnie Philip, Ayman H Jawadi, Khalid I Khoshhal
BACKGROUND: Developmental dysplasia of the hip (DDH) is one of the prevalent musculoskeletal conditions in young adults and is a leading cause of hip osteoarthrosis in this age group. The optimum age for surgical intervention when needed is not well established in the literature and the lack of management guidelines and standard practice of DDH leads to different practices worldwide. This study aims to investigate the current practice of paediatric orthopaedic surgeons in diagnosing and treating DDH worldwide and identify points of agreement and disagreement...
May 2017: Journal of Orthopaedic Surgery
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