PATELLAR FRACTURE IN ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: IN VITRO ANALYSIS
| Autor: | MARCELO DE ALMEIDA FERRER, MARIANA DE OLIVEIRA LOBO, LAÍS MARIA PINTO ALMEIDA, ANDERSON FREITAS, SÍLVIO LEITE DE MACEDO NETO, LEONARDO MORAIS PAIVA, LEONARDO RIGOBELLO BATTAGLION |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Acta Ortopédica Brasileira, Vol 31, Iss 2 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1413-7852 74031163 |
| DOI: | 10.1590/1413-785220233102e259557 |
| Popis: | ABSTRACT Objective: To determine, by biomechanical analysis, safe patellar cut limits in anterior cruciate ligament (ACL) reconstruction that minimize fracture risks. Methods: From three-dimensional reconstruction, triangular cuts were made in the patella, with a depth of 6.5 mm and variable width and length (10 to 20 mm and 8 to 12 mm, respectively, both with an interval of 1 mm). The combinations of cuts constituted 55 models for tests, with five variations in width and 11 variations in length, tested with the finite element method (FEM). Results: The mean of the localized principal maximum (traction force) values was 4.36 Pa (SD 0.87 ± 0.76) and the localized principal minimum (compression force) was −4.33 Pa (SD 1.05 ± 1.11). Comparing width and length to the tension force of the values of the main maximum, we found statistical significance from 11 mm for width and 13 mm for length. Conclusion: In ACL reconstruction, the removal of the patellar bone fragment is safe for fragments smaller than 11 mm in width and 13 mm in length, which corresponds to 24% of the width and 28% of the length of the patella used. Level of Evidence II, Comparative Prospective Study. |
| Databáze: | Directory of Open Access Journals |
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