Active clinical trials for "Osteoarthritis, Knee"

The purpose of this study is to clarify the potential of intra-articular ultrasound imaging, non-invasive ultrasound imaging, quantitative MRI imaging, contrast-enhanced CT imaging and arthroscopy for diagnostics of knee osteoarthritis. All methods will be cross-correlated and compared with the arthroscopic findings.

The aim is to improve understanding of the assessment of pain experience in patients with osteoarthritis (OA) of the knee. The current study will be divided into two parts. In Study 1, the investigators will analyse existing questionnaires relevant to the mechanisms and therapeutic targets of knee OA to establish discrete dimensions that discriminate between the different mechanisms of pain. On the basis of this analysis, the investigators will refine the questionnaires to maximise their sensitivity to knee OA. In Study 2, the investigators will seek to confirm the factor structure identified in the questionnaires in Study 1 and explore potential mediator and moderator variables between pain and quality of life using the refined measures. The investigators will also evaluate Quantitative Sensory Testing as a predictor of OA knee pain.

This study compares the clinical and radiographic outcomes obtained with the use of the Stryker Triathalon® Cruciate Substituting (CS) and Posterior Stabilized (PS) tibial inserts.

Total knee replacement is one of the most successful surgical procedures in Orthopaedics. However, 10-20% of the patients are still dissatisfied with the results of the surgery. In general, the evaluation of postoperative functional outcomes are usually measured by self-report questionnaires, such as the Western Ontario and Mcmaster Universities osteoarthritic Index (WOMAC) and the Short Form-36 health survey (SF-36). Another method to evaluate functional outcome of the patients is to use the performance-based tests such as the two-minute walk test, but there is still little information regarding its use for evaluating functional recovery in patients receiving total knee arthroplasty. The objectives this study are: 1) to assess the relationship between self-report questionnaires and performance-based tests among patients scheduling for TKA; and 2) to identify clinical variables that are associated with pre- and postoperative functional performance of the patients.

The development and implementation of "fast-track" principles in total knee and hip arthroplasty have resulted in early recovery and rehabilitation alongside a reduced length of hospital stay. This without a concomitant increase in morbidity or readmissions for medical or surgical complications and with reduced mortality. However, only little is known about function in the subacute period after arthroplasty, and there is a need for further data on physical and psychological functioning following discharge from hospital.This to ensure, that the positive results from the perioperative setting are carried forward in the subacute phase.

Arthritis is one of the most prevailing causes of disability with knee osteoarthritis (KOA) the most common form. The lifetime risk of developing symptomatic KOA by the age of 85 years is 44.7%, where females are at a greater risk (1.8 times) than male counter parts. KOA is the leading cause of limitations in activities of daily living such as walking and climbing stairs particularly in the elderly. This is primarily due to pain and instability of the joint resulting in buckling of knees caused by muscle weakness, joint stiffness and damage. Patients with KOA have larger variations in muscle strength and are unable to maintain a target force combined with impaired ability to perceive joint movement and positioning suggests impaired neuromuscular control (NC) may influence KOA. NC refers to the nervous system's control over muscle activation contributing to task performance. This study aims to establish the role of loss of NC in biomechanical determinants and health outcomes of KOA.

Despite improvements in treatment, a significant part of patients have severe pain following knee arthroplasty. Preoperative identification of high-risk patients would allow for an intensive individualized analgesic treatment pre- and postoperatively and thus potentially in reduced pain acute and chronically.

The main purpose of the study is to better understand how specific proteins/markers in blood, urine, synovial fluid (a lubricating fluid secreted by the membrane lining the joints), and joint tissue are involved in osteoarthritis of the knee. The aim is to investigate if there is a correlation between x-ray results, specific proteins/markers and different types of pain in patients with osteoarthritis of the knee. The study consists of 3 visits over 3-20 days and the last visit will be the day of surgery.

The purpose of this study is assess the severity of osteoarthritic knee between one-leg and both-leg standing radiograph in primary OA knee

The purpose of this study is to determine whether different kind of prostesis designs influences in the quality of life of patients