Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Joint stability"”.
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Multi-objective design optimization of reverse total shoulder arthroplasty to maximize range of motion and joint stability
… developed to restore range of motion (ROM) and joint stability to patients with pre-operative conditions that are not addressed by conventional replacements. Although reverse total shoulder arthroplasty is the current gold standard for treating a range of indications, the effects of varying its …
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Estudo analítico-experimental de um mecanismo articulado para manipulação remota
… remote handling device. An articulated spherical joint system has been idealized and a prototype of this system, developed. A solution to the joint stability problem is proposed as well as the joint friction has its behavior modeled throughout a matematical formulation. The calculational framework …
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Cortico-motor adaptations and proprioceptive acuity in patients with unilateral anterior cruciate ligament deficiency
… reflect a greater voluntary control to ensure joint stability.
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The healing of an autogenous osteochondral graft and a full thickness cartilage defect in the canine talus: compared by functional, radiographic and histological assessment
… assessment (lameness, hock range of motion, joint stability, joint crepitus and mid-femoral muscle circumference) was completed preoperatively and at postoperative weeks 2 through 20. Radiographic assessment (periarticular soft tissue width, joint space width, osteophyte formation and graft …
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Elliptical Rolling Link Toggle Mechanisms for Passive Force Closures with Self-Adjustment
This thesis presents elliptical rolling contact joints as an alternative to circular rolling contact and conventional revolute joints where high quality force transmission "low friction and backlash" with variable output are desired. Parameters specific to the joint and its position are developed …
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Differences in transverse knee moment in healthy, ACL-deficient, and ACL-reconstructed patients during standing target matching
… and so in the absence of the ACL rotational instability is common. Transverse knee moment, which has not been the focus of much research, can determine ACL-deficient (ACL-d) subjects’ ability or inability to compensate for this rotational instability. Target matching, both standing and seated, …
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Biomechanical assessment of RTSA functional outcomes towards optimising the prosthesis configuration
… to reverse the orientation of the glenohumeral joint, thereby altering the biomechanics of the deltoid and allowing it to restore shoulder function in the presence of an irreparably damaged rotator cuff. However, there are complications that can impact long-term success of RTSA. Adaptations to …
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Developing a Living Composite Ligament by Combining Prolotherapy and Nanoparticles as Treatment for Damaged Connective Tissue
… an effective medical treatment used to increase joint stability. However, most associated studies are retrospective or case studies, rather than comprehensive laboratory investigation originating with the cellular response to exposure to the proliferant solutions. As a parallel consideration, …
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Inverse Dynamic Analysis of ACL Reconstructed Knee Joint Biomechanics During Gait and Cycling Using OpenSim
… cruciate ligament) injuries of the knee joint alter biomechanics and may cause abnormal loading conditions that place patients at a higher risk of developing osteoarthritis (OA). There are multiple types of ACL reconstruction (ACLR), but all types aim to restore anterior tibial …
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An Electromyographical Analysis of Shoulder and Trunk Muscles During Chest Press on Stable and Unstable Platforms
… examining the effect of replacing a bench with a stability ball during the supine chest press has found that force output capability is compromised without a subsequent decrease in agonist muscle activation. It has been hypothesized that this discrepancy is caused by a co-contraction mechanism at …
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Total Knee Arthroplasty Wear Is Caused by Malrotation and Excessive Laxity
… to determine if a correlation exists between instability of a knee joint and the amount of wear present in an implant, and also relate surgical alignment to this wear. To accomplish this aim, a custom laxity machine was used to assess joint stability in 20 knees of human bodies donated to …
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The Effects of Tibiofemoral Conformity on the Kinematic Freedom of Revision Total Knee Arthroplasty Systems
… procedure. In both situations, residual knee instability could pose challenges in achieving satisfactory soft-tissue balance. These concerns can be addressed by increasing tibiofemoral conformity in the revision knee systems. However, highly conforming designs may restrict the tibiofemoral …
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Wrist Motion Simulation With a Rigid Body Spring Model Comparing Different Elements Modeling Approaches
… software, RecurDyn. Articulations between wrist joint bones were modeled using gliding surfaces, each was attached to its bone surface and this articulation was controlled by contact forces in the simulation software. Wrist ligaments were modeled by either one or two spring elements for each …
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The biomechanical and neuromuscular responses to shoe-surface instability
… and balance, normally associated with instability training devices like wobble boards, are not as effective. Therefore, the aim of this thesis was to develop and evaluate an unstable shoe that provides continually unpredictable perturbations. The notion was that a more challenging, and …
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Joint Coordination Variability In Anterior Cruciate Ligament Reconstructed Subjects During Stair Ambulation Using a Vector Coding Technique
… treatment for this injury to restore knee joint stability and function. While surgical reconstruction has been shown to restore laxity of the knee, current literature lacks consensus on return to normal knee joint kinematics following surgery. Additionally, re-injury is a major risk for …
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Anatomical, biomechanical and histological evaluation of the glenoid labrum
… integral part of the highly mobile glenohumeral joint. Labral injury can be detrimental to the movement and function of the shoulder. Therefore, an in-depth investigation of glenoid labrum microanatomy may improve our understanding of its roles and functions in the glenohumeral joint. This …
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The Impact of Anterior Cruciate Ligament Reconstruction, Sex, and Sport-specific, Game-like Factors on Limb Stiffness and Limb Stiffness Asymmetry during Landing
… experiences greater landing force can decrease joint stability and place the overloaded limb at greater risk for ACL injury. Additionally, a stiff landing, characterized by increased ground reaction force (GRF), extended joints at initial ground contact, and decreased joint flexion throughout …
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Factors that influence the performance of hop tests
… have been affected due to an injury, for example joint stability, muscle strength and neuromuscular coordination. There is limited literature exploring the factors which influence the performance of hop tests, and provides reference values for each of the individual test during different athletic …
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Effectiveness of a foot orthosis on muscular activity in functional ankle instability
… muscle (PL), in patients with functional ankle instability (FI). It is considered valid that foot orthoses as well as sensorimotor training have a positive effect on ankle muscle activity in healthy individuals and those with lower limb overuse injuries or flat arched feet (reduced reaction time …
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Role of Transverse Plane Hip Range of Motion and Strength on Pain and Function in Hip Osteoarthritis
… is a chronic, progressive disease that decreases joint mobility and function and is associated with disability and musculoskeletal pain (Bieler et al., 2017; O’Neill et al., 2018; O’Neill & Felson, 2018; Rydevik et al., 2010). According to the Centers for Disease Control, hip OA affects 1 in 7 …
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