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.
Results
Showing 1 to 20 of 23 for “"Joint replacements"”.
-
Loading of total hip joint replacements
Der totale Hüftgelenkersatz zählt zu den erfolgreichsten Operationen in der Endoprothetik. Jedoch ist das Patientenspektrum in den letzten Jahren immer jünger und aktiver geworden. Dadurch ist der Anspruch im Hinblick auf die Belastbarkeit und Lebensdauer dieser Implantate gestiegen. Bezüglich …
-
Properties of elastomers for small-joint replacements
… are used to manufacture finger and wrist joints. However these joints have fractured prematurely in vivo. There is a lack of literature on the mechanical properties of silicones. The aim of this thesis was to investigate the viscoelastic and related properties of elastomers such as …
-
Corrosion Dynamics of Cobalt-Chromium Alloy F-75 Powder
The increasing usage of metal-on-metal joint replacements consisting of a cobalt-chromium-molybdenum alloy requires increasing concern regarding the inevitable generation of metallic wear debris. Patients with these joint replacements exhibit elevated concentrations of cobalt and chromium ions …
-
The Effect of Ion Implantation on the Corrosive-Wear Resistance of Ti-6A1-4V.
… especially with respect to prosthetic total joint replacements, since these implants should remain in situ for the life of the patient. Thus, attempts should be made to find a material which produces minimal corrosion products and wear debris. Ion implantation may be a means by which the …
-
Variation in joint fluid composition and its effect on the tribology of replacement joint articulation
… problem limiting the long-term survival of joint replacement prostheses, particularly in total hip arthroplasty (THA) and total knee arthroplasty (TKA). Although the tribology of joint replacement has consequently become an area of significant research, the effect of joint fluid on …
-
Development of a 6-DOF robotic test system for studying the biomechanics of total knee replacement
A robotic-based joint testing system for studying the biomechanics of Total Knee Arthroplasty (TKA) was developed in this project. The system is composed of a 6 Degree-of-Freedom (DOF) robotic manipulator (Kawasaki UZ150(TM) and a 6-DOF universal force-moment sensor (JR3[TM]). This testing system …
-
Thermally driven visco-elastic measurement technique via spectral variations in scanning probe microscopy cantilevers
… disciplines ranging from bio-medical research on joint replacements to sealing technology in industrial machinery. Specifically, this work addresses the need for probing interfacial rheology to understand how lubricants fail as system scales are reduced from bulk dimensions to molecular length …
-
A new metacarpophalangeal joint replacement arthroplasty
The metacarpophalangeal joint is vital for hand function. It is frequently affected by rheumatoid arthritis or osteoarthritis and in some cases the diseased joint is replaced with an implant. The past and current metacarpophalangeal joint replacements can be divided into three main categories: …
-
The Study of Initiation Systems and Formulations for the Development of a Novel Silorane Biomaterial
There are approximately one million hip and knee replacements each year in the United States alone and over 70% are cemented for stabilization. The number of these replacements is expected to rise to 3.5 million per year by 2030 and result in an estimated several fold increase of the current global …
-
Fabrication and Characterization of Titanium-doped Hydroxyapatite Thin Films
… applications including bone grafts and joint replacements. Due to its structural and chemical similarities to human bone mineral, HA promotes growth of bone tissue directly on its surface. Substitution of other elements has shown the potential to improve the bioactivity of HA. Magnetron …
-
UNDERSTANDING THE SEXUAL EXPERIENCES OF PEOPLE LIVING WITH SICKLE CELL DISEASE
… many participants have undergone surgeries for joint replacements. However, after undergoing joint replacement surgery, their ability to navigate sexual positions was stymied. Therefore, the Sickle Cell Disease and Sexuality Framework was created to help clinicians and PLWSCD understand how SCD …
-
The Need, Value and Affordability of First-line Treatments for Hip and Knee Osteoarthritis in Alberta
… treatments are underused globally. In Alberta, joint replacements are publicly funded. Meanwhile, first-line treatments are funded with private insurance or out-of-pocket which reduces access. We sought to inform the policy-making process in Alberta by addressing three objectives: 1) Describe …
-
Drug eluting prosthetic joints through drug cluster morphology control
More than one million joint replacements are performed in the USA annually. However, around 10 % of patients require revision surgery within 10 years with prosthetic joint infections (PJI) as a common reason. PJI has a recurrence rate of 16 %, a mortality rate of 2.5 %, and end-stage treatments …
-
On the Influence of Gamma-Irradiation Sterilisation and Ageing on the Fracture Properties of Ultra High Molecular Weight Polyethylene
… polyethylene (UHMW-PE) tibial plateaux for total joint replacements have habitually been attributed to a fatigue crack growth mechanism associated with a combination of high sub-surface cyclic shear stresses and degradation of the chemistry and structure of UHMW-PE caused by the gamma-irradiation …
-
Numerical simulation of implant-bone interaction following cementless joint replacement
The advent of cemented joint replacements has revolutionised the management of patients suffering from chronic arthritis. However, establishing a durable bond between the prosthesis and the surrounding bone remains a considerable problem. As a result, cementless implants have been developed. These …
-
Interactive influences of crosslinking, counterface roughness and kinematics on the wear of crosslinked UHMWPE
… be a major cause of long term failure of total joint replacements. In vitro studies have shown that not only is the size and shape of the particles important for cellular response but also the volumetric concentration of the particles. Recently, crosslinking has been extensively introduced to …
-
Co-Developing Culturally Responsive Pre-Surgical Education for First Nation and Métis Hip and Knee Replacement Care in Saskatchewan
… accessing pre-surgical care for total joint replacements (TJR) and to co-develop a culturally responsive pre-surgical education program in partnership with a patient advisory committee (PAC). Methods: An exploratory qualitative approach was used across two phases of research. In the …
-
The effects of a six-week physiotherapist-led exercise and education intervention in patients with osteoarthritis, awaiting an arthroplasty in the South Africa
… OA is long waiting lists delaying access to joint replacements. Patients are known to wait more than five years for a joint replacement in the Western Cape of South Africa (SA). The main complaint in this population is pain and its consequences including activity limitations, participation …
-
Cellular Corrosion of CoCrMo Total Knee Implants: Understanding Underlying Mechanisms Through Retrieval Analysis and Simulated Inflammatory Conditions
<p>Introduction. Total joint arthroplasty is considered one of the most beneficial aspects of modern orthopedic surgery. Due to the increase in population, obesity rates, and medical advances, total joint replacements have become more commonplace in the United States. Recently, a unique type of …
-
Abrasion-corrosion of cast CoCrMo in simulated hip joint environments
Metal-on-metal (MoM) hip joint replacements have been increasingly used for younger and more active patients in recent years due to their improved wear performance compared to conventional metal-on-polymer bearings. MoM bearings operate at body temperature within a corrosive joint environment and …
Page 1 of 2