
Muscle Recovery After Total Knee Arthroplasty
Knee ArthritisOsteoarthritisTotal knee arthroplasty (TKA) surgery is a common procedure performed to reduce pain, improve function, and enhance the quality of life in patients with end-stage knee osteoarthritis. As with other knee-related injuries and surgeries, TKA surgery can lead to inhibition of the quadriceps muscle, resulting in a decrease in the muscle's capacity to generate maximum voluntary force. This issue can negatively affect post-injury rehabilitation and function. The long-term persistent neuromuscular muscle inhibition in the quadriceps, one of the most important anti-gravity muscles in our body, leads to muscle atrophy and strength loss, which is more determinant in the development of functional limitations compared to joint range of motion and knee pain. There have been no studies found that assess the quadriceps muscle inhibition occurring during the hospitalization of patients undergoing total knee arthroplasty surgery and examine its impact on post-discharge functional status. The aim of this study is to evaluate the severity of arthrogenic inhibition in the quadriceps muscle of patients following total knee arthroplasty surgery, which is widely practiced in our country and considered the gold standard for the treatment of end-stage knee osteoarthritis. Additionally, the study aims to investigate its impact on post-discharge functional recovery. The data obtained from this study will provide guidance in monitoring patients' early functional recovery post-surgery and in better planning post-surgical rehabilitation. The study will include patients aged 50-75 who have undergone total knee arthroplasty surgery due to knee osteoarthritis. Demographic information such as age, height, weight, and body mass index will be recorded. Pain will be assessed using a visual analog scale, and edema will be measured during hospitalization, at the 2nd and 6th-week follow-up visits. In addition to all the evaluations, functional status will be assessed at the 2nd and 6th-week follow-up visits using the 5-repetition sit-to-stand test, 10-meter walking test, and 2-minute walking tests, as well as knee function evaluated through the WOMAC and KOS-ADLS questionnaires.

A Randomized, Double-Blind, Controlled Trial to Assess the Efficacy of a Fortetropin Supplement...
OsteoarthritisThis is a hybrid, double-blind, randomized, placebo-controlled clinical trial that will last 12 weeks. Participants will be randomized into either the intervention product or control group and will consume the test product or control daily. Participants will complete study-specific and validated questionnaires at Baseline, Week 6, and Week 12, as well as blood biomarker testing for a lipid panel and high-sensitivity C-reactive protein (hs-CRP) at Baseline and Week 12. Osteoarthritis-like symptoms, such as joint pain, inflammation, and reduced mobility will be evaluated at baseline and at each check-in. Likert scale responses will be examined from baseline to each check-in. Participant responses on product feedback will be presented as % scores. Two validated questionnaires, Western Ontario and McMaster Universities Arthritis Index (WOMAC) and the Numeric Pain Rating Scale (NPRS) will also be completed at the questionnaire time points. A full lipid panel and hs-CRP measurement will be completed via in-person blood draws.

Pinnacle RSA Study
OsteoarthritisDegenerative ArthritisThe primary objective is to establish the mean superior cup migration of the Pinnacle Acetabular Shell using model-based RSA over the first two years post-implantation. The primary endpoint is the mean vertical subsidence (Y translation, also known as superior cup migration) at 2 years as measured with RSA. This will be summarized for each surgical approach separately, as well as combined.

A Study to Examine the Efficacy and Safety of REGN5069 in Patients With Pain Due to Osteoarthritis...
Osteoarthritis of the KneePainThe primary objective of the study is to evaluate the efficacy of REGN5069 compared to placebo in patients with pain due to radiographically-confirmed OA of the knee who have a history of inadequate joint pain relief or intolerance to current analgesic therapy. The secondary objectives of the study are: To characterize the concentrations of functional REGN5069 in serum over time when patients are treated for up to 12 weeks To assess the safety and tolerability of REGN5069 compared with placebo when patients are treated for up to 12 weeks To measure levels of anti-drug antibodies (ADAs) against REGN5069 following multiple IV administrations

Kinesio® Tex Taping for Post Total Knee Replacement Patients
Knee OsteoarthritisThis study is designed to better understand the effect of Kinesio Taping applied using the Neurotaping technique on patients who underwent total knee arthroplasty surgery. Patients will be randomized in two groups: in the first group patients will follow a protocol of usual rehabilitation, while the second group will do the same but add the Kinesio Taping application. Main outcome will be the effect on edema, secondary outcome the effect on functionality after 13 days post surgery.

Correction of Angular Deformities in Knee Arthrosis
Arthritis of KneeFor participants whose leg bones don't line up properly, extra stress is placed on either the inner or outer side of the knee joint due to uneven transfer of body-weight. Gradually, this extra pressure wears away the smooth cartilage, resulting in osteoarthritis on that side of the knee joint. This problem is particularly common in young athletes and places them at risk of early osteoarthritis. An operation exists whereby one of the bones either side of the knee is cut ( an osteotomy) and hinged open to straighten the leg. This alteration redistributes body-weight more equally across the knee joint and is known to be effective in delaying and possibly preventing, the progression of knee osteoarthritis- especially in younger and physically more active patients in whom a knee replacement is undesirable. Currently it is possible to ( accurately) calculate the precise position of the bone cut and number of degrees correction required to straighten a leg using digital x-rays and three-dimensional CT scans. However there is no method of implementing this pre-operative plan during surgery so that the majority of surgeons rely on relatively crude and ipso facto unreliable intra-operative measurements as a guide. To improve the accuracy of this operation, the investigator propose the use of a custom-made 'cutting block', tailored for each individual patient and its shape will match the contour of the patient's bone to ensure it can only be placed in one position. Pre-cut slots and holes will then guide the saw cut and the number of degrees the bone in hinged open, as per the pre-operative plan; it functions as an intra-operative template for the surgeon. This study will primarily examine whether there is a close match between the planned and actual correction of leg deformities when using a patient-matched cutting-block.

Improving the Detection, Classification and Treatment of Misaligned Arthritic Ankles
Ankle OsteoarthritisThe Veteran population is prone to foot and ankle maladies from common injuries such as sprains, and diseases such as ankle osteoarthritis (cartilage damage). More specific to Veterans are prior service injuries of the foot and ankle, which historically account for nearly a quarter of injuries received. These injuries include bone fractures and ligament damage. Some of these injuries may lead to poor ankle joint alignment, which over time could lead to osteoarthritis due to abnormal wear on a day to day basis. The goal of this proposal is to use a novel technology - biplane fluoroscopy, to study the movement of ankles which are misaligned in subjects with ankle osteoarthritis. This proposal will also benefit current diagnostic methods with additional information. Last, this proposal will test the effectiveness of a conservative treatment (modified shoe insoles) to correct or reduce the misalignment in ankles. This proposal will create evidence about: the nature of ankle osteoarthritis, the accuracy of diagnosing alignment, and conservative treatment for patients with ankle OA.

Open Label Extension to Assess the Safety of Long-Term Treatment With Ampion for Severe Osteoarthritis...
Severe Osteoarthritis of the KneeThis Open Label Extension (OLE) study will assess the safety of long-term treatment with a 4 mL intra-articular injection of Ampion™ in adults with pain due to severe osteoarthritis of the knee

Prospective Clinical 5-year Follow-up of the LINK® Endo-Model® SL®
Bone NecrosisArthritis/Arthrosis1 moreThe objective of this study is to collect outcome information on patients requiring Total Knee Replacement (TKR) in primary or revision cases and therefore receiving the LINK® Endo-Model® SL® under routine conditions.

Prospective Post Approval Clinical Follow-Up Study of the Commercially Available U2 Knee™ System...
Osteo Arthritis KneeThe purpose of this study is to evaluate both short and long term clinical performance and safety of the commercially available U2 Knee™ System.