
Long-Term Effectiveness of Walking Training in Patients With Knee Osteoarthritis
OsteoarthritisNearly one out of every two Americans will develop knee osteoarthritis by age 85. Over 20 million Americans, including nearly three million Veterans, currently have painful knee arthritis that limits their daily activity or recreation. The vast majority of those individuals will be prescribed anti-inflammatory drugs that provide some pain relief but do not slow the progression of the disease. Often people with knee arthritis are told they must live with the pain until they become appropriate candidates for knee replacement surgery, but that can require tolerating the pain and limiting function for many years. Because of other health issues, some individuals are never acceptable surgery candidates. What is desperately needed are better conservative approaches for treating these patients. Two such approaches will be tested and compared in this study.

Oxford Signature vs. Conventional Global Study
OsteoarthritisOsteoarthritis2 moreThis study will compare alignment criteria in the Oxford Partial Knee using conventional instrumentation and Signature Custom Guides in order to determine if the use of the Signature Custom Guides results in a higher percentage of knees achieving optimal alignment. The study will also examine outcomes with high volume surgeons (>30 cases/year) and low volume surgeons (<10 cases/year).

Optimization of Synvisc-One for Knee OA
Knee OsteoarthritisThe study hypothesis is that the use of Synvisc-One will improve physical therapy compliance and performance, resulting in improved knee function and pain when compared to a group that receives a sham injection (an injection that does not have medicine) only before a standardized physical therapy regimen over 10 weeks.

Group Exercise After Hip Replacement Surgery
OsteoarthritisHipThe purpose of this study is to determine which group exercise one should choose when hip osteoarthritis patients have undergone hip replacement surgery. To determine this, we want to answer the following research question: Are there differences in function and muscle strength in osteoarthritis patients who conduct group training either on land or in water in the rehabilitation phase following hip replacement surgery?

Durolane Versus Phosphate Buffered Saline (PBS) in Knee Osteoarthritis
Knee OsteoarthritisThe purpose of the study is to determine whether a single intra-articular injection of Durolane 4.5 mL is superior to a single injection of PBS 4.5 mL for the relief of joint pain in patients with osteoarthritis of the knee.

The Press Fit Condylar (P.F.C.) Sigma Rotating Platform (RP) TC3 Revision Knee in Revision Knee...
OsteoarthritisThe purpose of this study is to evaluate the long-term clinical and functional performance of the P.F.C. Sigma Rotating Platform TC3 knee system in revision knee surgery and to determine whether the implant design results in a longer-lasting knee replacement.

A Study to Evaluate the DePuy Minimally Invasive Unicompartmental Knee
OsteoarthritisThe primary purpose of this investigation is to evaluate the surgical performance of the DePuy Minimally Invasive (Preservation) Unicompartmental Knee and Instrumentation in a Multi-centre setting. The secondary objective of this investigation is to evaluate the long-term survivorship of the DePuy Minimally Invasive (Preservation) Unicompartmental Knee.

A 52-Week Study to Assess the Effects of MK0822 on Knee Osteoarthritis (MK-0822-011)
OsteoarthritisThe purpose of this study is to test MK0822 on disease activity in patients with osteoarthritis in the knee. Disease modifying activity of MK0822 will be assessed by measurements of knee cartilage using Magnetic Resonance Imaging (MRI) of the knee. This is an early phase trial and some specific protocol information is proprietary and not publicly available at this time. (Full information is available to trial participants).

PB125, Osteoarthritis, Pain, Mobility, and Energetics
OsteoarthritisKnee3 moreNuclear factor erythroid 2-related factor 2 (Nrf2) is an important regulator in the body. It controls how well cells protect themselves against stress. PB125 (Pathways Bioscience) is a plant based activator of this important regulator Nrf2. PB125 is made up of three plant extracts (rosemary, ashwagandha, and Sophora japonica) so that it contains these things; 1. Carnosol, 2. Withaferin A, and 3. Luteolin. Carnosol comes from rosemary leaves. Rosemary is a spice often used in Italian foods and grown in many herb gardens all around Fort Collins. Withaferin A comes from the medicinal plant Withania somnifera, also called ashwagandha. Ashwaganda is commonly known as "Indian Winter cherry" or "Indian Ginseng" and it is one of the most important herbs of Ayurveda (the traditional system of medicine in India) used for millennia. Finally, luteolin is found widely in plants including those present in the diet (peppers, onions, celery, herbs/spices). Some people purchase these herbs commercially, and take them on their own for a variety of purposes. Typically, when you buy them, they will be in much higher doses than they are in PB125. What makes PB125 different is that very low doses of each of the 3 components work together-synergistically-to activate Nrf2 and increase the ability of cells to respond to stress. It is unknown if there are any benefits to taking PB125 and the risks are currently unknown. The purpose of this study is to examine changes in muscle, in joint pain, in mobility (standing and walking) and in leg strength that occur after consuming PB125 every day for 3 months. We want to make these measurements in people who have been diagnosed with mild to moderate osteoarthritis-a degenerative joint disease-in their knees.

Cognitive Bias and Heuristics in Patients With Knee Osteoarthritis
Knee OsteoarthritisThis study aims to understand if certain cognitive biases and heuristics are present in patients with knee osteoarthritis being treated with open label placebo (saline injections in the knee). A predefined survey will investigate the affect heuristic and group interviews patients who have responded well or not so well respectively will be used to examine if other cognitive biases or heuristics are present. Cognitive biases are systematic patterns of deviation from norm or rationality in judgment, while heuristics are tactics, or mental shortcuts to aid in the decision-making process.