scholarly journals Current Possibilities for Detection of Loosening of Total Hip Replacements and How Intelligent Implants Could Improve Diagnostic Accuracy

10.5772/25772 ◽  
2012 ◽  
Author(s):  
Cathrine Ruther ◽  
Ulrich Timm ◽  
Hartmut Ewald ◽  
Wolfram Mittelmeier ◽  
Rainer Bader ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Hip Replacements

scholarly journals An MRI-Based Patient-Specific Computational Framework for the Calculation of Range of Motion of Total Hip Replacements

2021 ◽  
Vol 11 (6) ◽  
pp. 2852
Author(s):  
Maeruan Kebbach ◽  
Christian Schulze ◽  
Christian Meyenburg ◽  
Daniel Kluess ◽  
Mevluet Sungu ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Internal Rotation ◽  
Computer Aided Design ◽  
External Rotation ◽  
Patient Specific ◽  
Computational Framework ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Significant Difference ◽  
Hip Replacements

The calculation of range of motion (ROM) is a key factor during preoperative planning of total hip replacements (THR), to reduce the risk of impingement and dislocation of the artificial hip joint. To support the preoperative assessment of THR, a magnetic resonance imaging (MRI)-based computational framework was generated; this enabled the estimation of patient-specific ROM and type of impingement (bone-to-bone, implant-to-bone, and implant-to-implant) postoperatively, using a three-dimensional computer-aided design (CAD) to visualize typical clinical joint movements. Hence, patient-specific CAD models from 19 patients were generated from MRI scans and a conventional total hip system (Bicontact® hip stem and Plasmacup® SC acetabular cup with a ceramic-on-ceramic bearing) was implanted virtually. As a verification of the framework, the ROM was compared between preoperatively planned and the postoperatively reconstructed situations; this was derived based on postoperative radiographs (n = 6 patients) during different clinically relevant movements. The data analysis revealed there was no significant difference between preoperatively planned and postoperatively reconstructed ROM (∆ROM) of maximum flexion (∆ROM = 0°, p = 0.854) and internal rotation (∆ROM = 1.8°, p = 0.917). Contrarily, minor differences were observed for the ROM during maximum external rotation (∆ROM = 9°, p = 0.046). Impingement, of all three types, was in good agreement with the preoperatively planned and postoperatively reconstructed scenarios during all movements. The calculated ROM reached physiological levels during flexion and internal rotation movement; however, it exceeded physiological levels during external rotation. Patients, where implant-to-implant impingement was detected, reached higher ROMs than patients with bone-to-bone impingement. The proposed framework provides the capability to predict postoperative ROM of THRs.

scholarly journals A comparison of metal/metal and ceramic/metal taper‐trunnion modular connections in explanted total hip replacements

2021 ◽  
Author(s):  
Eileen S. Cadel ◽  
L.D. Timmie Topoleski ◽  
Oleg Vesnovsky ◽  
Charles R. Anderson ◽  
Robert H. Hopper ◽  
...  
Keyword(s):  
Total Hip ◽  
Total Hip Replacements ◽  
Metal Metal ◽  
Hip Replacements

Cementless Total HIP Replacements in Sickle Cell Disease

2015 ◽  
Vol 26 (2) ◽  
pp. 186-192 ◽  
Author(s):  
Christopher M. Jack ◽  
Jo Howard ◽  
Emad S. Aziz ◽  
Rachel Kesse-Adu ◽  
Marcus J. Bankes
Keyword(s):  
Sickle Cell Disease ◽  
Sickle Cell ◽  
Cell Disease ◽  
Total Hip ◽  
Total Hip Replacements ◽  
Hip Replacements

Ten-Year Follow-up Study of Charnley and Charnley-Mueller Total Hip Replacements.

1992 ◽  
Vol 41 (2) ◽  
pp. 604-607
Author(s):  
Kiyotaka Okuyama ◽  
Kenichiro Shibata ◽  
Masahiro Kina ◽  
Shinji Tomari ◽  
Shinichi Motomatsu ◽  
...  
Keyword(s):  
Total Hip ◽  
Follow Up Study ◽  
Total Hip Replacements ◽  
Hip Replacements
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