1. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Principle of the new sensor system for diagnosing aseptic loosening, e.g., applied in the total hip stem. Left: Hip stem with integrated membranes. Middle: Sensor principle with close bone contact. Right: Sensor principle with loosening layer (fibrous layer).

2. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Overdimensioned experimental setup to validate the functionality of the sensor principle

3. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Trigger circuit to control the excitation (L1) and the detection coil (L2)

4. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Cross-section of the overdimensioned model with the material layers attached to investigate different loosening phases

5. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Material layers to be attached on the external side of the membrane. Left: Water-filled pad with artificial bone. Right: Simulated partial osteolysis.

6. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Characteristic velocity signal of the oscillator recorded by the detection coil. The first negative peak is the maximum velocity of the oscillator after impingement on the membrane (n = 20).

7. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Maximum velocity after impingement of the oscillator on the membrane for different attached material layers simulating various implant loosening progression stages (n = 20)

8. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
Frequency spectrum of the oscillator signal with the eigenfrequency at 67 Hz and the first harmonic at 134 Hz

9. Date of download: 10/29/2017
Copyright © ASME. All rights reserved.
From: A Novel Sensor Concept for Optimization of Loosening Diagnostics in Total Hip Replacement
J Biomech Eng. 2011;133(10): doi: /
Figure Legend:
The amplitude in the frequency spectrum when testing with different material layers (n = 20)