Influence of Synthetic Bone Substitutes on the Anchorage Behavior of Open-Porous Acetabular Cup
Abstract
:1. Introduction
2. Materials and Methods
2.1. Cup Design
2.2. Fabrication
2.3. Measurements
2.4. Statistical Analysis
3. Results
3.1. Accuracy of Fabricated Samples
3.2. Initial Stability
3.3. Microscopy
3.4. Correlations—Lever-out Moment and Pull-out Force versus Density and Volume of the Press-Fit Area
4. Discussions
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Dimensions Unit Cell | Twisted (V) | Combined (D) | ||
---|---|---|---|---|
Parameter | V4_09 | V4_10 | D4_09 | D4_08 |
Width—a (mm) | 2.83 | 2.83 | 4 | 4 |
Depth—b (mm) | 2.83 | 2.83 | 4 | 4 |
Height—c (mm) | 4 | 4 | 4 | 4 |
Strut diameter—d (mm) | 0.9 | 1.0 | 0.9 | 0.8 |
Porosity of the structure area (%) | 72.5 | 67.4 | 61.1 | 66.9 |
Volume—press-fit area (cm3) | 0.30 | 0.39 | 0.97 | 0.91 |
Property | ROHACELL IGF 110 | Sawbones pcf 20 | SikaBlock M330 | Human Bone |
---|---|---|---|---|
Density (kg/m3) | 97.6 | 328.6 | 236 | 50–1000 |
Compressive modulus (MPa) | 137–168 | 238–276 | 133–183 | 10–2000 |
Compressive strength (MPa) | 3.2 | 8.4 | 3.4 | 0.9–9 |
Name | Press-Fit Cup | Press-Fit (mm) | ||||||
---|---|---|---|---|---|---|---|---|
Best Fit Circle (mm) | Roundness (mm) | SikaBlock | Sawbones | ROHACELL | ||||
V4_09 | 54.90 | 0.29 | 2.05 | ±0.02 | 2.03 | ±0.02 | 2.02 | ±0.02 |
V4_10 | 55.03 | 0.02 | 2.09 | ±0.02 | 2.02 | ±0.02 | 2.02 | ±0.03 |
D4_08 | 54.98 | 0.30 | 2.08 | ±0.01 | 2.03 | ±0.03 | 2.03 | ±0.01 |
D4_09 | 55.04 | 0.11 | 2.02 | ±0.01 | 2.03 | ±0.02 | 2.02 | ±0.01 |
SikaBlock | Sawbone | ROHACELL | SikaBlock | Sawbones | ROHACELL | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cup | Seating Force/Pull-out (N) | Seating Force/Lever-out (N) | ||||||||||
V4_09 | 3266 | ±218 | 4551 | ±574 | 1849 | ±46 | 2814 | ±308 | 6025 | ±855 | 1813 | ±86 |
V4_10 | 2971 | ±151 | 5248 | ±184 | 1943 | ±46 | 1952 | ±76 | 5504 | ±1012 | 1965 | ±123 |
D4_08 | 4339 | ±264 | 5459 | ±572 | 2635 | ±21 | 3775 | ±210 | 5475 | ±50 | 2460 | ±59 |
D4_09 | 4173 | ±135 | 6528 | ±1819 | 2669 | ±32 | 3495 | ±208 | 6445 | ±653 | 2408 | ±91 |
Cup | Pull-out Force (N) | Lever-out Force (N) | ||||||||||
V4_09 | 310 | ±24 | 386 | ±43 | 147 | ±7 | 24 | ±7 | 81 | ±15 | 10 | ±1 |
V4_10 | 308 | ±11 | 508 | ±21 | 157 | ±7 | 28 | ±4 | 78 | ±22 | 10 | ±2 |
D4_08 | 708 | ±38 | 793 | ±44 | 323 | ±13 | 90 | ±6 | 128 | ±4 | 21 | ±2 |
D4_09 | 704 | ±32 | 1181 | ±145 | 305 | ±10 | 83 | ±7 | 168 | ±19 | 23 | ±2 |
Pull-out Force | Lever-out Forcece | ||||||||
---|---|---|---|---|---|---|---|---|---|
Bone material | Cup | V4_10 | D4_08 | D4_09 | Cup | V4_10 | D4_08 | D4_09 | |
ROHACELL | V4_09 | n.s. | <0.0001 | 0.0002 | V4_09 | n.s. | n.s. | n.s. | |
V4_10 | - | 0.0002 | <0.0001 | V4_10 | - | 0.0300 | 0.0029 | ||
D4_08 | - | - | n.s. | D4_08 | - | - | n.s. | ||
Sawbone | V4_09 | n.s. | 0.0010 | 0.0016 | V4_09 | n.s. | 0.0080 | 0.0003 | |
V4_10 | - | 0.0020 | 0.0058 | V4_10 | - | 0.0592 | 0.0101 | ||
D4_08 | - | - | 0.0420 | D4_08 | - | - | 0.0456 | ||
SikaBlock | V4_09 | n.s. | <0.0001 | <0.0001 | V4_09 | n.s. | <0.0001 | 0.0002 | |
V4_10 | - | <0.0001 | <0.0001 | V4_10 | - | 0.0006 | 0.0005 | ||
D4_08 | - | - | n.s. | D4_08 | - | - | n.s. |
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Weißmann, V.; Ramskogler, T.; Schulze, C.; Bader, R.; Hansmann, H. Influence of Synthetic Bone Substitutes on the Anchorage Behavior of Open-Porous Acetabular Cup. Materials 2019, 12, 1052. https://doi.org/10.3390/ma12071052
Weißmann V, Ramskogler T, Schulze C, Bader R, Hansmann H. Influence of Synthetic Bone Substitutes on the Anchorage Behavior of Open-Porous Acetabular Cup. Materials. 2019; 12(7):1052. https://doi.org/10.3390/ma12071052
Chicago/Turabian StyleWeißmann, Volker, Tim Ramskogler, Christian Schulze, Rainer Bader, and Harald Hansmann. 2019. "Influence of Synthetic Bone Substitutes on the Anchorage Behavior of Open-Porous Acetabular Cup" Materials 12, no. 7: 1052. https://doi.org/10.3390/ma12071052