Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study
Background and purpose: The treatment of acetabular fractures remains technically demanding. In the case of reduced bone quality or fracture morphology reducing the amount of bone available for fixation, locking plates should provide considerable advantages. The aim of the present study was to comp...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Medical Journals Sweden
2024-11-01
|
| Series: | Acta Orthopaedica |
| Subjects: | |
| Online Access: | https://actaorthop.org/actao/article/view/42490 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850065245221945344 |
|---|---|
| author | Moritz F Lodde Christoph Katthagen Matthias Klimek Karl Abshagen Christian Peez Arian Große-Allermann Michael J Raschke Oliver Riesenbeck |
| author_facet | Moritz F Lodde Christoph Katthagen Matthias Klimek Karl Abshagen Christian Peez Arian Große-Allermann Michael J Raschke Oliver Riesenbeck |
| author_sort | Moritz F Lodde |
| collection | DOAJ |
| description |
Background and purpose: The treatment of acetabular fractures remains technically demanding. In the case of reduced bone quality or fracture morphology reducing the amount of bone available for fixation, locking plates should provide considerable advantages. The aim of the present study was to compare conventional and locking plate fixation. It was hypothesized that locking plate fixation provides less displacement and higher construct stiffness.
Methods: A T-shaped acetabular fracture was simulated in 16 synthetic pelvic models. The fracture was addressed with a biplanar 10-hole 2-column plate buttressing the medial acetabular wall. Optical markers were attached to the fracture sites for motion tracking. Standardization of the acetabulum loading mechanism was performed using a unipolar hemiarthroplasty. The primary outcome measure was displacement at the fracture sites. The secondary outcome measure was the construct stiffness (N/mm).
Results: Fracture displacement was less in the group of angular stable implants compared with the group fixed with conventional non-locking implants. Under cyclic loading displacement was less in the group of locking plate fixation. No differences in mean initial axial stiffness were detected between locking plate fixation (407 N/mm) and conventional plating (308 N/mm, ∆ 99 N/mm, 95% confidence interval –48 to 245).
Conclusion: We showed that locking plate fixation buttressing the medial acetabular wall achieved less fracture displacement but showed no differences in axial stiffness compared with conventional plating.
|
| format | Article |
| id | doaj-art-b5f4f913441d446a94fcdea01414e2e3 |
| institution | DOAJ |
| issn | 1745-3674 1745-3682 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Medical Journals Sweden |
| record_format | Article |
| series | Acta Orthopaedica |
| spelling | doaj-art-b5f4f913441d446a94fcdea01414e2e32025-08-20T02:49:04ZengMedical Journals SwedenActa Orthopaedica1745-36741745-36822024-11-019510.2340/17453674.2024.42490Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical studyMoritz F Lodde0Christoph Katthagen1Matthias Klimek2Karl Abshagen3Christian Peez4https://orcid.org/0000-0001-8055-289XArian Große-Allermann5Michael J Raschke6Oliver Riesenbeck7Department of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, GermanyDepartment of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany Background and purpose: The treatment of acetabular fractures remains technically demanding. In the case of reduced bone quality or fracture morphology reducing the amount of bone available for fixation, locking plates should provide considerable advantages. The aim of the present study was to compare conventional and locking plate fixation. It was hypothesized that locking plate fixation provides less displacement and higher construct stiffness. Methods: A T-shaped acetabular fracture was simulated in 16 synthetic pelvic models. The fracture was addressed with a biplanar 10-hole 2-column plate buttressing the medial acetabular wall. Optical markers were attached to the fracture sites for motion tracking. Standardization of the acetabulum loading mechanism was performed using a unipolar hemiarthroplasty. The primary outcome measure was displacement at the fracture sites. The secondary outcome measure was the construct stiffness (N/mm). Results: Fracture displacement was less in the group of angular stable implants compared with the group fixed with conventional non-locking implants. Under cyclic loading displacement was less in the group of locking plate fixation. No differences in mean initial axial stiffness were detected between locking plate fixation (407 N/mm) and conventional plating (308 N/mm, ∆ 99 N/mm, 95% confidence interval –48 to 245). Conclusion: We showed that locking plate fixation buttressing the medial acetabular wall achieved less fracture displacement but showed no differences in axial stiffness compared with conventional plating. https://actaorthop.org/actao/article/view/42490Angular stabilityBiomechanicsFracturesOsteoporosisPelvis and acetabulum |
| spellingShingle | Moritz F Lodde Christoph Katthagen Matthias Klimek Karl Abshagen Christian Peez Arian Große-Allermann Michael J Raschke Oliver Riesenbeck Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study Acta Orthopaedica Angular stability Biomechanics Fractures Osteoporosis Pelvis and acetabulum |
| title | Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study |
| title_full | Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study |
| title_fullStr | Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study |
| title_full_unstemmed | Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study |
| title_short | Angular stable plate fixation provides favorable biomechanical stability in simulated T-shaped acetabular fractures: a biomechanical study |
| title_sort | angular stable plate fixation provides favorable biomechanical stability in simulated t shaped acetabular fractures a biomechanical study |
| topic | Angular stability Biomechanics Fractures Osteoporosis Pelvis and acetabulum |
| url | https://actaorthop.org/actao/article/view/42490 |
| work_keys_str_mv | AT moritzflodde angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT christophkatthagen angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT matthiasklimek angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT karlabshagen angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT christianpeez angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT ariangroßeallermann angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT michaeljraschke angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy AT oliverriesenbeck angularstableplatefixationprovidesfavorablebiomechanicalstabilityinsimulatedtshapedacetabularfracturesabiomechanicalstudy |