Optimizing Subtalar Arthrodesis: A Human Cadaveric Evaluation of a Novel Partially-Threaded Screw Combination in the Delta Configuration
Abstract
:1. Introduction
2. Materials and Methods
2.1. Specimens and Preparation
2.2. Biomechanical Testing
2.3. Data Acquisition and Evaluation
3. Results
3.1. Initial Stiffness
3.2. Talus–Calcaneus Movements
3.3. Cycles to Failure
3.4. Modes of Failure
4. Discussion
5. Conclusions
Author Contributions
Funding
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Outcome | Group | Cycles | p-Value | ||||
---|---|---|---|---|---|---|---|
2000 | 4000 | 6000 | 8000 | 10,000 | |||
Varus–valgus [°] | 1 | 1.37 (0.75) | 2.89 (1.47) | 4.38 (2.31) | 6.34 (3.85) | 8.27 (5.00) | <0.001 |
2 | 0.96 (0.60) | 1.72 (1.14) | 2.48 (1.28) | 3.52 (1.91) | 5.29 (4.38) | ||
Flexion–extension [°] | 1 | 0.65 (0.72) | 1.38 (0.80) | 2.45 (1.39) | 3.18 (1.52) | 4.82 (2.66) | 0.078 |
2 | 0.56 (0.64) | 1.00 (0.93) | 1.67 (1.28) | 2.77 (1.94) | 4.17 (3.07) | ||
Internal–external rotation [°] | 1 | 0.51 (0.38) | 1.16 (1.10) | 1.87 (1.73) | 1.74 (1.30) | 2.46 (1.26) | 0.026 |
2 | 0.45 (0.70) | 0.69 (1.01) | 0.95 (1.21) | 1.42 (1.44) | 3.07 (2.68) | ||
Displacement [mm] | 1 | 1.51 (0.94) | 3.02 (1.57) | 4.89 (2.72) | 6.89 (4.84) | 9.31 (5.36) | <0.001 |
2 | 0.86 (0.86) | 1.49 (1.26) | 2.30 (1.50) | 3.61 (2.22) | 6.81 (5.82) |
Criterion | Group | Cycles to Failure | Failure Load | p-Value |
---|---|---|---|---|
5° Varus–valgus | 1 | 9169 ± 5880 | 1117 ± 788 | 0.029 |
2 | 14,053 ± 6225 | 1605 ± 823 | ||
5° Flexion–extension | 1 | 10,368 ± 2643 | 1237 ± 464 | 0.179 |
2 | 13,539 ± 5696 | 1554 ± 770 | ||
5° Internal–external | 1 | 14,348 ± 3746 | 1635 ± 575 | 0.840 |
2 | 14,766 ± 4880 | 1678 ± 688 | ||
Earliest failure | 1 | 8068 ± 3781 | 1007 ± 578 | 0.051 |
2 | 10,439 ± 2523 | 1244 ± 452 |
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Raykov, G.; Ivanov, S.; Gueorguiev, B.; Pastor, T.; Berk, T.; Pastor, T.; Zderic, I. Optimizing Subtalar Arthrodesis: A Human Cadaveric Evaluation of a Novel Partially-Threaded Screw Combination in the Delta Configuration. Medicina 2024, 60, 844. https://doi.org/10.3390/medicina60060844
Raykov G, Ivanov S, Gueorguiev B, Pastor T, Berk T, Pastor T, Zderic I. Optimizing Subtalar Arthrodesis: A Human Cadaveric Evaluation of a Novel Partially-Threaded Screw Combination in the Delta Configuration. Medicina. 2024; 60(6):844. https://doi.org/10.3390/medicina60060844
Chicago/Turabian StyleRaykov, Georgi, Stoyan Ivanov, Boyko Gueorguiev, Tatjana Pastor, Till Berk, Torsten Pastor, and Ivan Zderic. 2024. "Optimizing Subtalar Arthrodesis: A Human Cadaveric Evaluation of a Novel Partially-Threaded Screw Combination in the Delta Configuration" Medicina 60, no. 6: 844. https://doi.org/10.3390/medicina60060844