View clinical trials related to Joint Instability.
Filter by:Investigators designed this prospective cohort study to compare the clinical outcomes of modified Broström operation and anatomical reconstruction for the treatment of CLAI and GJL.
The purpose of the study is to investigate Joint Hypermobility Syndrome (JHS) and its effect on delayed onset muscle soreness (DOMS) and recovery time. The hypothesis is that people with JHS will experience increased DOMS when compared to non-hypermobile people. The results this study may assist and add to the body of knowledge when treating and exercising patients with JHS, as considerations can possibly be made when treating this population. Subjects with JHS may experience greater DOMS and require more time to recover between treatment sessions.
The features of CAI were confirmed through studies that 64% to 77% had extra-articular conditions mainly related to calf tendon disorder. In addition, joints are laxity, sensory motors are deficient, and the range of dorsi flexion is decreased. this study is to investigate the effects of active joint mobilization(AJM) under weight-bearing conditions to stimulate various proprioceptors for CAI with deficiency in sensorimotor and postural control.
Prospective, randomized, single-blind, multinational, long-term study for the evaluation of the clinical outcome, oxidation profile and wear analysis of medium cross-linked Polyethylene with and without Vitamin E for total knee arthroplasty
Chronic ankle instability is associated with changes in the nervous system that amount to increased difficulty in activating the stabilizing muscles of the ankle. Neuromuscular Electrical Stimulation involves using electricity to activate those muscles in bursts, and is commonly used to improve muscle function in those with ACL injury. This study will provide 5 treatments over 2 weeks in patients with Chronic Ankle Instability and determine if Electrical Stimulation can change neural excitability, balance, neuromuscular control, and perceived function in these individuals.
Individuals with chronic ankle instability (CAI) display neuromuscular deficits such as altered control of posture and gait when compared with healthy controls. These deficits may be attributed to muscle inhibition occurring after a surrounding joint structure has been damaged. Functional electrical stimulation (FES) is the application of high-intensity intermittent electrical stimuli to generate muscle contractions that may overcome inhibition, and which is coupled with a functional task such as gait. The current study aims to investigate the short and immediate effects of FES on gait parameters and postural control in subjects with CAI. Prior to intervention, treadmill gait will be evaluated using a motion analysis system, and postural control will be evaluated in a series of tests that measure balance, reaction time to ankle perturbation and stabilization ability after jump-landing. Then, a 20 minutes gait training with an FES device will be applied. Immediate effects of the training on gait parameters will be assessed. For medium-term effects evaluation, subjects will return for additional 7 training sessions (2 per week for 4 weeks), following by a complete measurements acquisition as prior to intervention. At six months follow-up, subjects will be contacted for collecting subjective outcomes.
The aim of this study is to identify factors responsible for recurrent shoulder instability in children. Shoulder instability, i.e. complete or partial dislocation of the shoulder joint, is common in children, resulting in pain and disability. Recurrent instability can damage the shoulder joint resulting in the premature development of arthritis. Rehabilitation approaches are preferred over surgical methods for the growing child e.g. physiotherapy to restore movement and prevent further instability. Existing rehabilitation procedures are based on addressing factors assumed to be responsible for instability e.g. physiotherapists may try to increase shoulder stability by building up the shoulder muscles to compensate for the damaged ligaments. It is evident however that the mechanisms of shoulder instability are not well understood, as failure rates for physiotherapy are high, with 70% - 90% of children continuing to suffer recurrent instability. This is an observational, cross-sectional study of children (aged 8 to 18) presenting with shoulder instability of any origin, traumatic or atraumatic (n=15) and an age-matched sample (n=15) with no history of shoulder problems. Muscle activity and movement pattern differences will be measured using non-invasive 3D motion capture and surface electromyography, to identify factors responsible for instability. Only a single visit to the site will be required (The Orthotic Research & Locomotor Assessment Unit (ORLAU) based at The Robert Jones & Agnes Hunt Orthopaedic Hospital NHS Foundation Trust in Oswestry.). If investigators better understand the mechanisms associated with instability, physiotherapy interventions to reduce dislocations and disability can be better targeted. If specific patterns of activity associated with instability are identified, these could be addressed through personalised and improved exercise prescription and rehabilitation. Additionally, causes of instability for which physiotherapy may not be appropriate may be identified, therefore ensuring patients are referred to the correct service in a timely manner, improving patient outcomes and allocating physiotherapy resources more appropriately. Participants will be recruited from musculoskeletal/orthopaedic outpatient clinics. This study is funded by the Private Physiotherapy Education Foundation.
The movement control of shoulder joint relies not only on the glenohumeral joint, but also the critical contributions from scapulothoracic joint. The relating scapula muscle strength, scapula mobility and, the most important of all, the capacity of neuromuscular control should be integrated into the rehabilitation program for patients with shoulder disorders. With regarding to the subacromial impingement syndrome or rotator tendinopathy, the status of scapula dyskinesia and dysfunctions were improved significantly after the intervention of scapula-emphasized exercise. But there was no study addressed the relationships between stiffness of relating muscles and the deficits of scapula movement. The stiffness had been shown to serve an important role in functional performance of the corresponding joint. For example, the decreased elasticity of supraspinatus muscle was noticed on affected side comparing in patients with impingement syndrome.Few studies examined the effects of altered muscle stiffness on kinematic performance in shoulder complex. Laudner et al. found that the stiffer the latismuss dorsi muscle was, the less upward rotation and posterior tilting, and the more internal rotation of scapula during arm elevation was exhibited in asymptomatic swimmers. Another study showed that the increased range of external rotation and posterior tilt of scapula during arm elevation were associated with the decreased stiffness of pectoralis minor. The recent study presented that the electromyographic activities and elasticities of middle deltoid, supraspinatus, and infraspinatus muscles correlated significantly with the tissue elasticity during shoulder movement in healthy shoulder. However, there was no scientific information directly to prove the changes in characteristics of rotator cuff function as well as the impacts on kinematic control of shoulder complex. Therefore, the aim of this study is to examine the relationship among characteristics of muscle properties and kinematic control healthy swimmers.
Anterior cruciate ligament (ACL) rupture is one of the most common musculoskeletal injuries in young individuals, particularly those that are active in sports. Up to 30% of individuals under the age of 20 years suffer a re-injury to the reconstructed ACL. Revision ACLR has been associated with degeneration of the articular cartilage and increased rates of meniscal tears, increasing the risk of post-traumatic osteoarthritis (PTOA), additional surgical procedures, reduced physical function and quality of life. As such, strategies to reduce ACLR failure, particularly in young active individuals, are critical to improving short and long-term outcomes after ACL rupture. There is ongoing debate about the optimal graft choice and reconstructive technique. Three autograft options are commonly used, including the bone-patellar-tendon-bone (BPTB), quadriceps tendon (QT) and hamstring tendon (HT). Additionally, a lateral extra-articular tenodesis (LET) may provide greater stability to the ACLR; however, its effect on failure rate is unclear and surgery-induced lateral compartment OA is a concern. To definitively inform the choice of autograft and the need for a LET, this multicenter, international randomized clinical trial will randomly assign 1236 young, active patients at high risk of re-injury to undergo ACLR using BPTB or QT autograft with our without LET.
The objective of this study is to design a library of biomechanical musculoskeletal models of patients before and after surgery. These models will be evaluated to analyze the support they can provide for virtual surgical planning in orthopedics.