Follow-Up Study Evaluating The Long Term Safety and Efficacy of BST-CarGel and Microfracture Repair...
Knee InjuriesThis follow-up study will evaluate the effects of BST-CarGel® application to a microfractured lesion (investigational) and microfracture alone (control) for up to 5 years from treatment in subjects, treated under Protocols CG-CIP01-P and CG-CIP02-P, and will serve as a post approval study for these Protocols, in support of a commercial application. The lesions treated under Protocols CG-CIP01-P and CG-CIP02-P were focal lesions of articular cartilage, grade 3 or 4 (either ICRS or Outerbridge classification) on the medial and lateral femoral condyles of the knee, and were classified as either acute or chronic.
Simple Knee Value, a Simple Score for Functional Assessment of the Knee
Knee InjuriesThe pre- and post-operative functional assessment of patients' knees is of great interest for the practitioner, whether it is in his or her daily practice to determine the appropriate management of the patient, or to conduct clinical studies. The scores used are established in several languages to provide a uniformly accepted unit of measurement.
External Stressors Prior to Traumatic Knee Injury in Youth Athletes.
Traumatic Knee InjuryThe aim of this study is to evaluate different aspects of mental stress aspects and its role as a potential risk factor for traumatic knee injury in youth athletes. Approximately 300 athletes (age 16-19) 50% women) who are involved in high risk sports (soccer, handball and floorball) will be included. The athletes will record his/hers traumatic knee injury together with information about training regimes and some details on injury mechanism on a web-based form. The form also includes questions about mental stressors, such as club exchange, changed game system in addition to conflict within and outside the family, etc, prior to injury. The present study will contribute new knowledge on levels of muscle function and different aspects of mental stress factors that may be related to traumatic knee injury in young athletes.
Subjective Outcomes After ACL Reconstruction With BQT Autograft
ACL InjuryKnee InjuriesThe purpose of the study is to compare short-term patient reported outcome measures (PROM) of Bone-Quadriceps-Tendon (BQT) autograft with Semitendinosus-Gracilis (STG) and Bone-Patellar-Tendon-Bone (BPTB) autografts following Anterior Cruciate Ligament Reconstruction (ACLR). The PROM used are Knee Injury and Osteoarthrithis Outcome Score (KOOS) and Tegner. Difference in change in KOOS, KOOS subscales and Tegner from preoperative baseline to one-year follow-up and absolute KOOS, KOOS subscales and Tegner at one-year follow-up were evaluated. All of which were BQT compared to STG and BPTB, respectively. The primary outcome is change in KOOS from preoperative baselinge to one-year follow-up. Other outcomes are secondary. The hypothesis was that patients receiving the BQT autograft show similar results in KOOS, KOOS subscales and Tegner as patients receiving STG or BPTB autografts.
Optimized Referral of Knee Patients at the Clinic of Sports Injuries
Knee InjuriesKnee; Injury1 moreThe aim of the study is to evaluate an algorithm to screen patients with a possibility of meniscal injury referred to a sports injury outpatient clinic by using patient-reported symptoms. It will be investigated whether the algorithm is able to identify which patients are deemed relevant to undergo assessment by a physician (i.e. in case the patient need to undergo surgery) and which patients are relevant to undergo assessment by a physiotherapist. This will be evaluated by estimating the sensitivity of the new algorithm compared to actual relevancy based on the traditional clinical assessment of the patients.
Clinical Outcome of Posterior Cruciate Ligament (PCL) Posterolateral Reconstruction
Knee InjuriesThe purpose of this investigation is to determine the clinical outcome of surgical reconstruction of complete ruptures to the posterior cruciate ligament (PCL) and posterolateral structures of the knee joint. The outcome will be determined with validated and rigorous knee rating systems between 2 and 10 years postoperatively. The results will be determined by the analysis of subjective and functional factors, sports and occupational activity levels, a comprehensive physical examination, and a radiographic evaluation. We hypothesize that the appropriately indicated procedures will effectively restore normal knee stability and function in patients with isolated or combined injuries to these structures.
Risk Factors for Anterior Cruciate Ligament (ACL) Injury
Knee InjuriesAthletic InjuriesThe anterior cruciate ligament (ACL) is located inside the knee joint and provides stability to the knee. ACL injuries occur more frequently in women than men; the reason for this is unknown. The purpose of this study is to determine gender-specific anatomical, hormonal, and demographic risk factors for ACL injury. This observational cohort study will only enroll incoming cadets at the U.S. Naval, Air Force, or Military Academies. Study hypothesis: Human movement factors, including key kinetics and kinematics of the knee during a jump-landing task, are associated with the rate of ACL injury.
A Validation Study of Force Sense Measurement
Knee InjuriesProprioceptive DisordersThe term proprioception was first introduced by Sherrington in 1906, who described it as a type of feedback from the limbs to the central nervous system. Based on the early descriptions by Sherrington and others, the contemporary terms of joint position sense (JPS), kinaesthesia (perception of active and passive motion), and sense of tension or force sense are considered sub modalities of proprioception. For the extremity joints, goniometers (universal, bubble, digital) can also be used to measure active JPS. Depending on the device used and the extremity joint measured, reliability and measurement error of active movement goniometry can range widely and this should be carefully considered if goniometry is used to measure active JPS of extremity joints. Kinesthesia, can be measured by calculating the passive motion detection threshold of individuals. The force sense (FS), commonly assessed using force reproduction, has also been used as a measure of proprioception. Assessing force reproduction by limb matching involves the use of a reference force, usually determined as a percentage of a Maximal Voluntary Isometric Contraction (MVIC), and attempting to replicate that force. Proprioception can be decreased in those who suffer from knee injury. Because patients with severe degenerative joint disease often require total knee arthroplasty to relieve pain, improve stability, and restore function. Due to problems such as oedema, immobilization and subjective pain after surgery, it is difficult to evaluate proprioception with joint repositioning method. In such cases, the assessment of FS could be of particular interest in the knee region. FS can also be measured by the accuracy of reproducing a specific target force. For example, the pressure biofeedback device (PBD) used for assessing the cranio-cervical flexion test could be considered a method of assessing force sense in the cervical spine. The ability to hold steadily or the accuracy in achieving and maintaining a desired pressure can be used. However, for the knee region, there is no method to measure the force sense via a device that can be used in clinical practice. The aim of this study was to establish a method for measuring FS that could be applied quickly and practically in the clinic, and to correlate the outcomes with surface electromyographic (EMG) muscle activation levels from M. Quadriceps femoris to demonstrate the applicability and objectivity of this method.
The Munich Knee Questionnaire - Development and Validation
Knee Injurythe purpose of this study is to develop and validate a new PRO measurement tool for the knee joint, the so-called Munich Knee Questionnaire (MKQ), allowing for a qualitative self-assessment of the Knee Injury and Osteoarthritis Outcome Score (KOOS), the International Knee Documentation Committee (IKDC), the Lysholm Knee Score, the Western Ontario Meniscal Evaluation Tool (WOMET) and the Tegner Score.
Stories to Educate Patients With Ankle, Foot, and Knee Injuries
InjuryStudy will test the use of narratives on patient satisfaction and translation of an evidence-based approach to the use of X-rays for leg injuries in the Emergency Department (ED). The investigators will identify patients with foot, ankle, or knee injuries for whom X-rays are determined to not be needed. On discharge, patients will receive the current fact-based sheet or that plus a narrative explaining the work-up and treatment of these injuries. Outcomes will be assessed by a survey measuring patient satisfaction and understanding.