scholarly journals Heating of hip joint implants in MRI: The combined effect of RF and switched‐gradient fields

2021 ◽  
Vol 85 (6) ◽  
pp. 3447-3462
Author(s):  
Alessandro Arduino ◽  
Umberto Zanovello ◽  
Jeff Hand ◽  
Luca Zilberti ◽  
Rüdiger Brühl ◽  
...  
Keyword(s):  
Hip Joint ◽  
Combined Effect ◽  
Gradient Fields ◽  
Joint Implants

Optimal parameters of abrasive flow finishing for hip joint implants

2021 ◽  
pp. 095440542199561
Author(s):  
Yahya Choopani ◽  
Mohsen Khajehzadeh ◽  
Mohammad Reza Razfar
Keyword(s):  
Surface Roughness ◽  
Standard Deviation ◽  
Femoral Head ◽  
Hip Joint ◽  
Spherical Shape ◽  
Shape Deviation ◽  
Head Surface ◽  
Joint Implants ◽  
Finishing Processes ◽  
Abrasive Flow Finishing

Total hip arthroplasty (THA) is one of the most well-known orthopedic surgeries in the world which involves the substitution of the natural hip joint by prostheses. In this process, the surface roughness of the femoral head plays a pivotal role in the performance of hip joint implants. In this regard, the nano-finishing of the femoral head of the hip joint implants to achieve a uniform surface roughness with the lowest standard deviation is a major challenge in the conventional and advanced finishing processes. In the present study, the inverse replica fixture technique was used for automatic finishing in the abrasive flow finishing (AFF) process. For this aim, an experimental setup of the AFF process was designed and fabricated. After the tests, experimental data were modeled and optimized to achieve the minimum surface roughness in the ASTM F138 (SS 316L) femoral head of the hip joint through the use of response surface methodology (RSM). The results confirmed uniform surface roughness up to the range of 0.0203 µm with a minimum standard deviation of 0.00224 for the femoral head. Moreover, the spherical shape deviation of the femoral head was achieved in the range of 7 µm. The RSM results showed a 99.71% improvement in the femoral head surface roughness (0.0007) µm under the optimized condition involving the extrusion pressure of 9.10 MPa, the number of finishing cycles of 95, and SiC abrasive mesh number of 1000.

Metallographic Evaluation of Hip Joint Implants wear and Electrochemical Implants Potential

2014 ◽  
Vol 24 (6) ◽  
pp. 604-609
Author(s):  
Krzysztof Kmieć ◽  
Marcin Sibinski ◽  
Marek Synder ◽  
Marek Drobniewski ◽  
Piotr Kozłowski
Keyword(s):  
Hip Joint ◽  
Joint Implants

Effects of Hydrogen Peroxide Solutions on Artificial Hip Joint Implants

2005 ◽  
Vol 20 (5) ◽  
pp. 639-646 ◽  
Author(s):  
Masamori Shigematsu ◽  
Masaru Kitajima ◽  
Kenji Ogawa ◽  
Takami Higo ◽  
Takao Hotokebuchi
Keyword(s):  
Hydrogen Peroxide ◽  
Hip Joint ◽  
Artificial Hip Joint ◽  
Artificial Hip ◽  
Joint Implants

scholarly journals An Analytical Calculation of Frictional and Bending Moments at the Head-Neck Interface of Hip Joint Implants during Different Physiological Activities

Materials ◽  
2016 ◽  
Vol 9 (12) ◽  
pp. 982 ◽  
Author(s):  
Hamidreza Farhoudi ◽  
Reza Oskouei ◽  
Ali Pasha Zanoosi ◽  
Claire Jones ◽  
Mark Taylor
Keyword(s):  
Hip Joint ◽  
Analytical Calculation ◽  
Bending Moments ◽  
Joint Implants ◽  
Head Neck
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