A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison
In recent years, an increase in periprosthetic femur fractures has become apparent due to the increased number of hip replacements. In the case of Vancouver type B1 fractures, locking plate systems offer safe procedures. This study compared the distal lateral femur plate (LOQTEQ<sup>®</sup&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/11/3/892 |
| _version_ | 1797486764326125568 |
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| author | Daniel Rau Gabriele Rußow Mark Heyland Dag Wulsten Clemens Kösters Werner Schmölz Sven Märdian |
| author_facet | Daniel Rau Gabriele Rußow Mark Heyland Dag Wulsten Clemens Kösters Werner Schmölz Sven Märdian |
| author_sort | Daniel Rau |
| collection | DOAJ |
| description | In recent years, an increase in periprosthetic femur fractures has become apparent due to the increased number of hip replacements. In the case of Vancouver type B1 fractures, locking plate systems offer safe procedures. This study compared the distal lateral femur plate (LOQTEQ<sup>®</sup>, aap Implantate AG) with a standard L.I.S.S. LCP<sup>®</sup> (DePuy Synthes) regarding their biomechanical properties in fixation of periprosthetic femur fractures after hip arthroplasty. We hypothesized that the new LOQTEQ system has superior stability and durability in comparison. Eighteen artificial left femurs were randomized in two groups (Group A: LOQTEQ<sup>®</sup>; Group B: L.I.S.S. LCP<sup>®</sup>) and tested until failure. Failure was defined as 10° varus deformity and catastrophic implant failure (loosening, breakage, progressive bending). Axial stiffness, loads of failure, cycles of failure, modes of failure were recorded. The axial stiffness in Group A with 73.4 N/mm (SD +/− 3.0) was significantly higher (<i>p</i> = 0.001) than in Group B (40.7 N/mm (SD +/− 2.8)). Group A resists more cycles than Group B until 10° varus deformity. Catastrophic failure mode was plate breakage in Group A and bending in Group B. In conclusion, LOQTEQ<sup>®</sup> provides higher primary stability and tends to have higher durability. |
| first_indexed | 2024-03-09T23:38:55Z |
| format | Article |
| id | doaj.art-61e8ed2b4651471f8ab1c1a131504538 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-09T23:38:55Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-61e8ed2b4651471f8ab1c1a1315045382023-11-23T16:55:38ZengMDPI AGJournal of Clinical Medicine2077-03832022-02-0111389210.3390/jcm11030892A New System for Periprosthetic Fracture Stabilization—A Biomechanical ComparisonDaniel Rau0Gabriele Rußow1Mark Heyland2Dag Wulsten3Clemens Kösters4Werner Schmölz5Sven Märdian6Center for Musculoskeletal Surgery, Charité-University Medicine Berlin, 13353 Berlin, GermanyCenter for Musculoskeletal Surgery, Charité-University Medicine Berlin, 13353 Berlin, GermanyBIH-Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-University Medicine Berlin, 13353 Berlin, GermanyBIH-Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-University Medicine Berlin, 13353 Berlin, GermanyDepartment of Orthopedic, Trauma and Hand Surgery, Maria-Josef-Hospital Greven, 48268 Greven, GermanyDepartment of Orthopaedics and Traumatology, Medical University of Innsbruck, 6020 Innsbruck, AustriaCenter for Musculoskeletal Surgery, Charité-University Medicine Berlin, 13353 Berlin, GermanyIn recent years, an increase in periprosthetic femur fractures has become apparent due to the increased number of hip replacements. In the case of Vancouver type B1 fractures, locking plate systems offer safe procedures. This study compared the distal lateral femur plate (LOQTEQ<sup>®</sup>, aap Implantate AG) with a standard L.I.S.S. LCP<sup>®</sup> (DePuy Synthes) regarding their biomechanical properties in fixation of periprosthetic femur fractures after hip arthroplasty. We hypothesized that the new LOQTEQ system has superior stability and durability in comparison. Eighteen artificial left femurs were randomized in two groups (Group A: LOQTEQ<sup>®</sup>; Group B: L.I.S.S. LCP<sup>®</sup>) and tested until failure. Failure was defined as 10° varus deformity and catastrophic implant failure (loosening, breakage, progressive bending). Axial stiffness, loads of failure, cycles of failure, modes of failure were recorded. The axial stiffness in Group A with 73.4 N/mm (SD +/− 3.0) was significantly higher (<i>p</i> = 0.001) than in Group B (40.7 N/mm (SD +/− 2.8)). Group A resists more cycles than Group B until 10° varus deformity. Catastrophic failure mode was plate breakage in Group A and bending in Group B. In conclusion, LOQTEQ<sup>®</sup> provides higher primary stability and tends to have higher durability.https://www.mdpi.com/2077-0383/11/3/892periprosthetic femur fracturebiomechanical studyVancouver B1 fractureLOQTEQ<sup>®</sup>locking attachment platebiomechanical study |
| spellingShingle | Daniel Rau Gabriele Rußow Mark Heyland Dag Wulsten Clemens Kösters Werner Schmölz Sven Märdian A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison Journal of Clinical Medicine periprosthetic femur fracture biomechanical study Vancouver B1 fracture LOQTEQ<sup>®</sup> locking attachment plate biomechanical study |
| title | A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison |
| title_full | A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison |
| title_fullStr | A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison |
| title_full_unstemmed | A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison |
| title_short | A New System for Periprosthetic Fracture Stabilization—A Biomechanical Comparison |
| title_sort | new system for periprosthetic fracture stabilization a biomechanical comparison |
| topic | periprosthetic femur fracture biomechanical study Vancouver B1 fracture LOQTEQ<sup>®</sup> locking attachment plate biomechanical study |
| url | https://www.mdpi.com/2077-0383/11/3/892 |
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