View clinical trials related to Knee Injuries.
Filter by:According to many researches, mesenchymal stem cells (MSC) isolated from synovial membrane and infrapatellar fat pad have higher ex vivo proliferation capacity, multipotency and ability to undergo chondrogenesis. Based on this concept, the investigators plan to get two removed tissues (synovial membrane and infrapatellar fat pad) from patients who have an operation of TKR (Total Knee Replacement). The investigators are going to isolate and expand MSC from these two tissues respectively, and then compare their characterization and potential for clinical application. In the other hand, the investigators plan to build techniques and procedures which comply with "Good Tissue Practices (GTP)".
According to many recent research, mesenchymal stem cells (MSC) isolated from synovial membrane and infrapatellar fat pad have higher ex vivo proliferation capacity, multipotency and ability to undergo chondrogenesis. Based on this concept, the investigators plan to get two removed tissues (synovial membrane and infrapatellar fat pad) from patients who have an operation of total knee replacement. The investigators are going to isolate and expand MSC from these two tissues respectively, and then compare the chondrogenesis ability for clinical application. In the other hand, the investigators plan to build techniques and procedures which comply with "Good Tissue Practices (GTP)"
Smith & Nephew's first edition of the Journey posterior stabilizing total knee arthroplasty was analyzed by the Center for Musculoskeletal Research in a past research study, and it was determined that subjects experienced more normal-like kinematic patterns. They also achieved excessive axial rotation and a decrease in weight-bearing knee flexion. Since Smith & Nephew has made modifications to the Journey bi-cruciate stabilizing (BCS) total knee arthroplasty (TKA) design, researchers will again evaluate the kinematics of subjects implanted with the revised design to determine if subjects experience normal-like kinematic patterns and if greater weight-bearing knee flexion is achieved. The objective for this study is to analyze the in vivo kinematics for subjects implanted with a 2nd generation Journey BCS TKA and compare those patterns to subjects having a normal knee and those having the 1st generation Journey posterior stabilizing (PS) TKA that were analyzed in the previous study.
The safety and performance of dCELL® Meniscus will be evaluated in 60 patients after partial replacement of the native medial or lateral meniscus with the investigational product.
While surgical anterior cruciate ligament reconstruction (ACLR) of the knee restores passive stability, studies are showing consistently poor long-term outcomes. Unusually high risks of early-onset osteoarthritis and re-injury, and low rate of return to sport following ACLR all seem to be related to a chronic tendency to land stiff-legged from a jump or hop, which itself may be due to fear of re-injury. Decreased knee bending for force absorption simultaneously decreases performance level and increases risk for injury and arthritic changes. The purpose of the proposed study is to compare a current best-practice plyometric training program to one utilizing body weight support to increase repetition and improve performance in the initial phases. The investigators hypothesize that we will see larger improvements in absorptive capacity of the knee and better confidence in activity immediately following body weight support training, as well as improved retention of training effects after a two-month period.
Muscle inhibition prevents optimal contraction of the quadriceps muscle due to changes in the nervous system after knee joint injury. Current treatments for muscle inhibition at this time include knee joint cryotherapy and electric stimulation prior to exercise. These treatments, in addition to strengthening exercises, have shown improvements in the quality and strength of muscle contractions however, they have a short window of effectiveness. Electromyographic Biofeedback is proven to be useful in improving quadriceps strength but the mechanism of action remains somewhat unclear. Therefore, the purpose of this investigation is to compare the effectiveness of electromyographic biofeedback supplemented exercise when compared to traditional exercise on quadriceps muscle function in individuals with a history of knee injury and current evidence of quadriceps inhibition. We hypothesize that 14 days of electromyographic biofeedback supplemented exercise will lead to larger gains in quadriceps activation when compared to traditional exercise. Thirty 18-40 year old participants with a history of knee injury and current evidence of quadriceps muscle inhibition will be enrolled in this single blind randomized controlled trial. Participants will provide written consent prior to all study procedures. Following enrollment, participants will be asked complete questionnaires related to knee related function, current levels of pain, and current activity level followed by completion of baseline measurements. 1. We will use the superimposed burst technique to quadriceps muscle activation. 2. We will measure the Hoffmann reflex response of the quadriceps with surface electromyography. We will measure this signal with surface electromyography electrodes that record the activity of the quadriceps muscle through the skin. Participants in both groups will be instructed on a 14 day home exercise protocol on the day of enrollment. The protocol is comprised of 4 exercises focused on both non-weight bearing and weight bearing quadriceps strengthening. Compliance will be monitored via a daily exercise diary which will be collected at the end of the study protocol. Quadriceps central activation ratio, active motor threshold and Hoffmann reflex will be reported descriptively. Pre-intervention and post 14 day intervention quadriceps central activation ratio and Hoffmann reflex will be compared between traditional exercise and Biofeedback supplemented exercise
Non-steroidal anti-inflammatory medication (NSAID) therapy is a mainstay treatment for joint pain and painful musculoskeletal disorders. Though this form of systemic therapy is highly effective, it causes substantial side effects including gastritis and gastric ulcer disease, renal impairment, hypertension, and thrombotic events. These types of oral medications are utilized by millions of Americans on a fairly regular basis in both over-the-counter preparations and prescription compounds. In recent years, topical preparations of NSAIDs have been used for localized pain as an alternate to oral administration with reported good analgesic efficacy. For example, they are often used for knee pain. There is little systemic absorption of NSAIDs with topical administration, and consequently less likelihood of systemic side effects. Though much less studied than oral NSAIDs, topical NSAID preparations are currently prescribed for a variety of arthritic and musculoskeletal types of pain. The best-studied commercially available products are diclofenac 1% compounds. Higher concentrations presumably provide higher tissue concentration leading to better and longer pain relief, along with a more prominent anti-inflammatory effect. The investigators will therefore compare the efficacy of available topical diclofenac 1% gel to that of diclofenac 8% cream. Specifically, the investigators propose to test the hypothesis that efficacy of topical diclofenac 8% exceeds that of diclofenac 1%, without any increase in systemic toxicity. One hundred six patients presenting to the Cleveland Clinic Pain Management Department for the treatment of knee pain will be randomly assigned to topical diclofenac cream 8% or diclofenac gel 1%, with the designated medication applied the symptomatic area of the knee over 6 weeks. Investigators will be blinded to treatment, and will evaluate pain relief and functional/disability status.
The purpose of this project is to compare three treatment regimens for knee injury to the standard rehabilitation protocol: 1) NMES, 2) graduated strength walking (via a weighted vest), and 3) NMES combined with graduated strength walking. Each treatment arm will be supplemented by the standard of care and compared to a group who receive the standard rehabilitation only. The Study will compare the effects of NMES, Strength Walking and combined NMES/ Strength Walking on strength, mobility, symptomatology, and Quality of Life (QOL) in military members with knee injury to a standard rehabilitation protocol program only. All groups will participate in standard rehabilitation protocol. The groups will be assessed over 18 weeks to compare main and interactive effects over time.
The purpose of this study is to evaluate the incidence and degree of bone tunnel widening between two groups who have undergone anterior cruciate ligament reconstructive surgery. The two groups have undergone different graft fixation methods: an interference screw/suspensory button fixation hybrid technique, and an all-inside suspensory method fixation. Tunnels are created at the time of surgery for graft placement and fixation, but have been known to enlarge post-operatively. Little has been studied on the relatively new all-inside technique. X-rays of the operative knee will be used to assess tunnel width. Secondary outcomes will include clinical evaluation and outcome scoring questionnaires
The investigators have previously reported on patient utilization of an eRehab patient education web portal that utilizes streaming, clinician prescribed video instruction to motivate and inform patients in self-care of their orthopedic condition, focusing on the importance of a home exercise program. The greatest barrier to patient use of this web-based home exercise treatment plan was the initial access to the program. The purpose of this study is to compare an Internet-based patient education rehab portal (eRehab) to formal physical therapy (PT) in terms of patient costs and outcomes.