Active clinical trials for "Osteoarthritis, Knee"

The study seeks to evaluate the condition of patients 5 years after having undergone partial knee replacement for localized osteoarthritis of the knee. Participating patients will voluntarily undergo detailed evaluation of clinical and radiologic outcomes 5 years after surgery. The aims of the study are to describe the survivorship of the prostheses and the clinical results of patients, and to elucidate and describe the natural history disease of the untreated knee joint compartments after a partial replacement. Patients who were operated by the principal investigator 5 years previously will be invited to participate. The study is observational in nature; there is no element of experimentation or test of an intervention.

The aim of this project is to investigate fMRI ability to identify pain central sensitization in chronic knee OA. Patients with high and low central sensitization and healthy control subjects will be included. Central sensitization will be clinically defined based on the evidence of regional spread of pain (spreading sensitization) and increased pain response to repeated stimulation (temporal summation). Operatively, a patient will be assigned to high sensitization group when showing (i) clinical evidence of pain or altered sensations spread beyond the knee joint by manual palpation, (ii) a minimum of 3 anatomical sites around the knee showing a pressure pain threshold below 4 kg/cm2 (tender points), (iii) pain score of 4 points or more in a 11-point scale during 4 kg/cm2 pressure stimulation on the anterior/medial surface of the tibial bone (the site selected for the fMRI experiment) and (iv) increase of at least 1 point in a 11-point scale after 10 repeated pressure stimulation on the tenderest point around the knee. A three-step strategy is proposed to characterize the phenomenon by assessing (i) brain response to direct pressure stimulation on the painful knee, which will reflect the combination of peripheral and central sensitization; (ii) brain response to pressure stimulation on a non-arthritic hyperalgesic area (i.e., the anterior surface of the tibia), which will mostly reflect central sensitization mediated at the spinal cord level, and (iii) brain response to moderately painful heat stimulation on a healthy skin area (i.e., volar forearm), which will reflect central sensitization occurring in the brain and involving the highest-level pain modulatory mechanisms. An additional evaluation is proposed using resting-state fMRI to assess potential alterations in baseline brain functional organization.

Analyze the results of cooled radiofrequency in patients with chronic knee pain after one year of follow- up.

Sarcopenia is a wasting disease with the locomotion system in the aged population. It is defined as the decline in muscle mass (lean body mass) and strength with the advance of age. The prevalence of sarcopenia increases with age, reaching an astounding 50% among the population aged over 75 in the United States. Sarcopenia is often associated with frailty, falls, and disability. Studies have found sarcopenia can be a predicting risk factor for fractures in the elderly. In addition, sarcopenia predicted a higher chance of mortality in nursing homes.

This study aims to research on the association between the inclination of the proximal tibiofibular joint surface and medial compartment knee osteoarthritis. The proximal tibiofibular joint radiographs of the participants will be taken. The angle of inclination of the proximal tibiofibular joint surface in two groups will be compared.

One consequence of tissue damage caused by tourniquet is ischemia-reperfusion injury. Short-term ischemia leads to vasodilatation and reactive hyperemia resulting in post-ischemic reperfusion microcirculation failure and tissue edema that extends from 30 minutes to 4 hours. SCUBE-1 is a newly defined cell surface molecule. It emerges from many developing cells, including endothelium and platelets. Immunohistochemical demonstration of subendothelial matrix deposition in atherosclerosis in humans. We did not find any study that showed the post-ischemic regression of scube 1, which was shown to be significantly higher in ischemic events in the literature. in this study is aimed to investigate the location / sensitivity of SCUBE-1 in diabetics and nondiabetics after application of regional anesthesia for ischemia-reperfusion injury induced by tourniquet application in knee prosthesis attempts in our aimed patients and compare this with other total antioxidant status (TAS) and MDA of ischemia-reperfusion parameters

Hip and knee osteoarthritis (OA) is an important health problem with a high prevalence and significant consequences on functional ability, perceived health, restriction of autonomy and handicap. The weight of multimorbidities and their interaction on functional ability and perceived health are left unexplored. This project will rely on the cohort KHOALA, representative, multiregional, of 881 prevalent cases (symptomatic hip and knee OA). Main objective: to describe the evolution over time of pain, functional ability, social participation and quality of life in subjects with hip and knee OA to identify prognosis factors of disease evolution (socio-demographic, clinical, and other health parameters) to determine interactions with comorbidities, other personal and environmental factors (ICF model). Concurrent objective: to improve measurement of perceived health specific to hip and knee OA by the OAKHQOL by improving its metrologic performances based on item response theory. Task 1: To prepare an improved measurement scale, available as a judgment criteria for the 3rd year of cohort follow up, over the april 2010-march 2012 period, the mini-OAKHQOL Task 2: Evaluation of the cohort in 2010-2012 (year 3 of follow up) in a repeated measure design to best assess the evolution of perceived health and functional ability over time, and to identify stability of deterioration of autonomy. Perspectives: This project targets to provide public health deciders with information of good quality to help them manage determinants of perceived health in OA subjects, as essential factors to health care resource utilization in their various modalities.

Osteoarthritis (OA) is one of the most common joint disorders worldwide . The knee is the most common symptomatic joint in osteoarthritis. In this study, we evaluated the presence of sarcopenia multidimensionally in patients with knee osteoarthritis (OA) using clinical, ultrasonographic and biochemical parameters, and in this respect, it was aimed to investigate the relation between OA and sarcopenia and to identify the most practical, easily accessible and inexpensive method for investigating sarcopenia.

Echo intensity (EI) assessment using ultrasonography helps monitoring disease-induced muscle quality changes. However, there are no study investigating the reliability of EI in patients with knee osteoarthritis (OA). The primary aim of the present study was to investigate the inter and intra-rater reliability of EI evaluation by grayscale histogram analysis of quadriceps femoris muscle in patients with knee OA. The second aim was to compare the mean grayscale values obtained using both the Free Hand Tool (FHT) and Rectangular Marquee Tool (RMT) methods in ImageJ. Thirty patients with knee OA were included in this cross-sectional study. The echogenicity measurements of the Rectus Femoris, Vastus Inter-medius, Vastus Lateralis and Vastus Medialis were performed by two different researchers. Reliability analysis of EI measurements were calculated with using intraclass correlation coefficient (ICC), standard error of measurement (SEM) and coefficient of variation (CV) and Bland and Altman plot analysis.

Osteoarthritis is the most common articular disease affecting the joint in a comprehensive and progressive manner. It is a chronic pathology correlated with age since nearly one in two adults is affected by osteoarthritis. The care of osteoarthritis is based on pharmacological and non-pharmacological treatment. The latest recommendations support the non-pharmacological part including regular physical activity, therapeutic education and weight loss. Today tools are lacking for the patient and the practitioner to ensure long-term motivation and support. Connected objects, as future-oriented tools, are a customizable way to meet the expectations of both patients and professionals. The main objective of this study is to analyze the expectations regarding the use of a smartphone application for monitoring and support in the practice of exercises and regular physical activity in patients osteoarthritic. The secondary objective is to collect information on the use of connected objects dedicated to the management of osteoarthritis by patients and health professionals.