Feasibility of 3D micromotion measurement around a loaded hip stem using micro-CT imaging.
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The hip is one of the most injured joint in the body with ageing. Osteoarthritis and degenerative diseases often lead to the necessity of a total hip arthroplasty in order to reduce pain and increase mobility. The advantage of cementless implants resides i ...
Background: Total Ankle Replacement (TAR) o_ers the advantage of preserving ankle joint motion compared with ankle arthrodesis. However, compared to hip or knee arthroplasty, TAR is a less successful procedure when considering the relatively low implants s ...
The initial stability of cementless femoral components is crucial for the long-term success of total hip arthroplasty. This has been reported in animal and clinical studies. Until now, the stability was evaluated by the measurement of relative micromotion ...
The primary stability of cementless femoral components is crucial for the long-term success of total hip arthroplasty. The mechanisms which influence this stability are not yet well understood. However, mechanical environment in peri-implant tissue is know ...
The ankle is one of the most injured joint in the body. However, it remains a new field of study in biomedical orthopedics. With the increased life span, more people suffer from arthosis and joint problems. That is why the improvements done in arthroplasty ...
The authors propose a protocol to derive finite element (FE) models from micro computer tomography scans of implanted rat bone. A semi-automatic procedure allows segmenting the images using specimen-specific bone mineral density (BMD) thresholds. An open-s ...
The primary stability of cementless femoral components is crucial for the long-term success of total hip arthroplasty. We know that the healing phase after surgery is a complex biological process, which is affected by the mechanical environment. Implant lo ...
It has been established that primary stability of femoral stems is a determinant of the clinical success of cementless total hip arthroplasty. Excessive interface micromotions may lead to a peri-implant fibrous tissue formation resulting in aseptic looseni ...
The aim of this study is to compare the difference in µ-motion between a custom stem implant and a sps standard stem and assess the importance of patient specificity. A surgeon would implant 3 sps-standar stems and 3 custom stems in 6 cadaveric femurs. The ...
μmotion affects the peri-implant bone formation . However, no experimental method to measure 3D μmotion along the peri-implant surface has been developed so far, besides uniaxial μmotion in a limited number of sites [2]. This work consists in devising an e ...