View clinical trials related to Knee Osteoarthritis.
Filter by:The primary objective of this study is to identify osteoarthritis (OA) structural changes, as assessed by MRI, that best correlate with the presence of neuropathic pain (NP) using the PainDETECT questionnaire (PainDETECT ≥ 13) on a population of patients with OA of the knee experiencing moderate to severe pain (VAS ≥ 40 mm).
Background: In the early phase after a total knee arthroplasty (TKA), patients experience multi-level weakness in the operated leg, which is caused primarily by reduced central nervous system (CNS) activation failure of the muscles - especially the knee extensors. This considerable loss of muscle strength relates to reduced functional performance. Early-commenced, progressive strength training of the knee extensors of the operated leg therefore seems rational. However, the concern is that this type of early-commenced, intense physical rehabilitation exacerbates post-operative symptoms, such as knee joint pain. The investigators have recently reported that early-commenced physical rehabilitation, including progressive strength training of the knee extensors of the operated leg seems feasible after TKA. The classic exercise-physiology literature emphasizes loading and repetitions performed to contraction failure - among others - as important variables for muscle hypertrophy and strength gains. It is currently not known how loading and repetitions performed to contraction failure during knee extensions with the operated leg, influences post-operative knee joint pain in patients with TKA. Purpose and hypothesis: The purpose of this study is to investigate how loading and repetitions to contraction failure influence knee joint pain during knee extensions with the operated leg early after TKA. The hypothesis is that knee pain increases with increasing loading and fatigue. Methods: Fifteen patients with a unilateral TKA, operated between 1 to 2 weeks prior to the first investigation, will be included. The participants are investigated twice. During the first investigation, the absolute load (kilograms) corresponding to 10 Repetition Maximum (RM) (a load that can be lifted exactly 10 times) will be determined for unilateral (operated leg) knee extension. At the second investigation, at least 72 hours later, the patients will perform 1 set of 4 repetitions with a relative loading of 8, 14, and 20 RM each, in a randomized order, estimated from their 10 RM test at the first investigation. Time under tension (contraction velocity) and range of knee joint motion for each repetition will be controlled for. During the concentric phase of each repetition, the patients rate their knee joint pain verbally, using a numerical rating scale placed 1 meter in front of them. After a short break, the patients perform 1 set of knee extension with a relative loading of 10 RM until of contraction failure. As for the loading effect described above, they rate their knee joint pain during the concentric phase of each repetition.
Problem: Currently, no system allows precise kinematic assessment of the knee and accurate guiding of orthopedic surgical actions in a minimally invasive fashion. However, such a system would prove useful in the clinical setting to improve the quality of surgical interventions at the knee. Hypothesis: A novel knee kinematic assessment and surgical guidance tool using 3D personalized imaging and minimally invasive bony fixation allows precise kinematic assessment and surgical guidance in the routine clinical setting. Objectives : - Demonstrating the capacity of the system to precisely measure 3D knee kinematics - Quantifying the reproducibility of the kinematic measurements - Measuring the impact of knee surgical procedures on knee kinematics - Assessing the correlations between measured articular kinematics and clinical results after knee surgery - Integrating the novel measuring system to the surgical flow of three knee surgical procedures - Quantifying the precision and reproducibility of the surgical actions guided by the system - Comparing the clinical results of surgeries guided by the system to those performed with the traditional technique
The purpose of this study is to determine whether a standardized education and exercise program proposed before a total knee replacement for knee osteoarthritis is effective in functional recovery after surgery.
The investigators are comparing the range of movements the knees of patients who had total knee replacement surgery for knee osteoarthritis. In the study arm, the implant used was a Sigma Cruciate Retaining (CR) Press Fit Condylar (PFC) 150, which is a high flexion knee system designed to combine function with wear resistance. It can accommodate up to 150 degrees of knee flexion. In the cohort arm, the implant used was the standard Sigma CR which can accommodate up to 120 degrees of flexion.
Knee osteoarthritis (OA) can result in significant pain and limitation of function. A number of topical non-steroidal anti-inflammatory drugs have been shown to reduce pain in this condition. This study examines a different topical approach, utilizing a topical anesthetic agent, to evaluate if application of such an agent would provide relief of exercise-induced knee pain in people with knee OA.
The purpose of the study is to explore if a subgroup of people with osteoarthritic knees can be identified using the McKenzie System of Mechanical Diagnosis and Therapy. In the spine this subgroup, termed derangement,has been shown to respond rapidly to specific directional exercises. The trial will explore whether these derangements in the knee respond to specific exercises compared to a control group with no exercises and non-derangement knees given general exercises.
The purpose of this pilot study is to determine the feasibility of conducting a high quality clinical trial to investigate the effects of low intensity, pulsed ultrasound on knee osteoarthritis pain and physical function.
Patients undergoing knee replacement surgery and who have high levels of pain catastrophizing are at risk for poor outcome. The clinical trial is designed to determine if a pain coping skills training intervention delivered by physical therapists and supervised by psychologists is more effective at reducing pain and improving function and is more cost effective than arthritis education or usual care.
This study is designed to assess: Hypothesis #1: That there is a significant central pain component in a distinct subset of patients diagnosed with knee osteoarthritis(KOA), Chronic low back pain(CLBP), painful diabetic neuropathy(PDN.) Hypothesis # 2: To establish a reliable strategy for differentiation of central pain predominant from peripheral pain predominant knee osteoarthritis(KOA), chronic low back pain(CLBP)and peripheral diabetic neuropathy(PDN) patients using clinical features, experimental pain testing and magnetic resonance(MR) Spectroscopy.