Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures
Objective: The aim of this study was to evaluate whether the locking femoral neck plate (LFNP) can be an alternative fixation method to the cannulated screws with a medial buttress plate. For this purpose, we compared biomechanically the LFNP and cannulated screws with or without a medial buttress p...
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2024-11-01
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| Series: | Acta Orthopaedica et Traumatologica Turcica |
| Online Access: | https://www.aott.org.tr/en/biomechanical-comparison-of-locking-femoral-neck-plate-versus-cannulated-screws-with-or-without-a-medial-buttress-plate-in-pauwels-type-3-femoral-neck-fractures-137431 |
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| author | Yilmaz Onder Tugrul Bulut Osman Nuri Eroglu Samet Ciklacandir Yalcin Isler |
| author_facet | Yilmaz Onder Tugrul Bulut Osman Nuri Eroglu Samet Ciklacandir Yalcin Isler |
| author_sort | Yilmaz Onder |
| collection | DOAJ |
| description | Objective: The aim of this study was to evaluate whether the locking femoral neck plate (LFNP) can be an alternative fixation method to the cannulated screws with a medial buttress plate. For this purpose, we compared biomechanically the LFNP and cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures.
Methods: A vertical fracture model was created at an 80-degree angle to the femoral neck in 28 synthetic bone models. The models were randomly divided into 4 groups, each containing 7 bones each. The bone fracture models were fixed with 3 parallel cannulated screws in group 1, 3 parallel cannulated screws combined with a medial buttress plate in group 2, LFNP in group 3, LFNP combined with a medial buttress plate in group 4. The stability of the specimens was tested biomechanically at a 7° valgus inclination to simulate normal 2-legged weight-bearing through an anatomical femur. The forces corresponding to 0.5 mm, 1 mm, 1.5 mm, and 2 mm displacement and failure loads were calculated in all groups.
Results: The axial load values corresponding to 4 di!erent fracture displacements and the failure load values of the groups were compared, group 1 was significantly weaker (P < .05 for each) while group 4 was significantly stronger (P < .05 for each) compared to the other groups. There was no statistically significant di!erence between group 2 and group 3 (P > .05 for each).
Conclusion: The results of this biomechanical study showed that the LFNP fixation system provided su"cient biomechanical stability for unstable Pauwels type 3 femoral neck fractures. The biomechanical performance of LFNP was similar to that of cannulated screws with medial buttress plate and better than that of cannulated screws alone. This suggests that LFNP can be a promising stable alternative fixation method to cannulated screws with a medial buttress plate in unstable femoral neck fractures |
| format | Article |
| id | doaj-art-184d6f59f5cc473982a7d2a57aeffea4 |
| institution | Kabale University |
| issn | 1017-995X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | AVES |
| record_format | Article |
| series | Acta Orthopaedica et Traumatologica Turcica |
| spelling | doaj-art-184d6f59f5cc473982a7d2a57aeffea42025-02-03T07:06:36ZengAVESActa Orthopaedica et Traumatologica Turcica1017-995X2024-11-0158631331710.5152/j.aott.2024.24076Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fracturesYilmaz Onder0https://orcid.org/0009-0001-5071-0620Tugrul Bulut1https://orcid.org/0000-0002-7075-0873Osman Nuri Eroglu2https://orcid.org/0000-0002-9807-239XSamet Ciklacandir3https://orcid.org/0000-0003-2076-2400Yalcin Isler4https://orcid.org/0000-0002-2150-4756Department of Orthopaedics and Traumatology, Izmir Katip Celebi University, Ataturk Training and Research Hospital, Izmir, TürkiyeDepartment of Orthopaedics and Traumatology, Izmir Katip Celebi University, Ataturk Training and Research Hospital, Izmir, TürkiyeDepartment of Orthopaedics and Traumatology, Izmir Katip Celebi University, Ataturk Training and Research Hospital, Izmir, TürkiyeDepartment of Biomedical Engineering, Izmir Katip Celebi University Faculty of Engineering and Architecture, Izmir, TürkiyeDepartment of Biomedical Engineering, Izmir Katip Celebi University Faculty of Engineering and Architecture, Izmir, TürkiyeObjective: The aim of this study was to evaluate whether the locking femoral neck plate (LFNP) can be an alternative fixation method to the cannulated screws with a medial buttress plate. For this purpose, we compared biomechanically the LFNP and cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures. Methods: A vertical fracture model was created at an 80-degree angle to the femoral neck in 28 synthetic bone models. The models were randomly divided into 4 groups, each containing 7 bones each. The bone fracture models were fixed with 3 parallel cannulated screws in group 1, 3 parallel cannulated screws combined with a medial buttress plate in group 2, LFNP in group 3, LFNP combined with a medial buttress plate in group 4. The stability of the specimens was tested biomechanically at a 7° valgus inclination to simulate normal 2-legged weight-bearing through an anatomical femur. The forces corresponding to 0.5 mm, 1 mm, 1.5 mm, and 2 mm displacement and failure loads were calculated in all groups. Results: The axial load values corresponding to 4 di!erent fracture displacements and the failure load values of the groups were compared, group 1 was significantly weaker (P < .05 for each) while group 4 was significantly stronger (P < .05 for each) compared to the other groups. There was no statistically significant di!erence between group 2 and group 3 (P > .05 for each). Conclusion: The results of this biomechanical study showed that the LFNP fixation system provided su"cient biomechanical stability for unstable Pauwels type 3 femoral neck fractures. The biomechanical performance of LFNP was similar to that of cannulated screws with medial buttress plate and better than that of cannulated screws alone. This suggests that LFNP can be a promising stable alternative fixation method to cannulated screws with a medial buttress plate in unstable femoral neck fractureshttps://www.aott.org.tr/en/biomechanical-comparison-of-locking-femoral-neck-plate-versus-cannulated-screws-with-or-without-a-medial-buttress-plate-in-pauwels-type-3-femoral-neck-fractures-137431 |
| spellingShingle | Yilmaz Onder Tugrul Bulut Osman Nuri Eroglu Samet Ciklacandir Yalcin Isler Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures Acta Orthopaedica et Traumatologica Turcica |
| title | Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures |
| title_full | Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures |
| title_fullStr | Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures |
| title_full_unstemmed | Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures |
| title_short | Biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in Pauwels type 3 femoral neck fractures |
| title_sort | biomechanical comparison of locking femoral neck plate versus cannulated screws with or without a medial buttress plate in pauwels type 3 femoral neck fractures |
| url | https://www.aott.org.tr/en/biomechanical-comparison-of-locking-femoral-neck-plate-versus-cannulated-screws-with-or-without-a-medial-buttress-plate-in-pauwels-type-3-femoral-neck-fractures-137431 |
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