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Observational Study
CT mapping for complex tibial pilon fractures: Understanding the injury pattern and its relation to the approach choice.
- Pedro José Labronici, Adriano Fernando Mendes Junior, Alisson Augusto Muraro da Silva, Paulo Marcelo Guerra da Silva, Marcos Donato Franco de Araújo Serra, Anselmo Fernandes da Silva, PiresRobinson Esteves SantosRESUniversidade Federal de Minas Gerais. Prof. Alfredo Balena Av, 190 - Santa Efigênia. Belo Horizonte-MG, Brasil., and Alair Augusto Sarmet Moreira Damas Dos Santos.
- Universidade Federal Fluminense. Marquês de Paraná St, 303 - Centro, Niterói, RJ. Electronic address: plabronici@globo.com.
- Injury. 2021 Jul 1; 52 Suppl 3: S70-S76.
ObjectiveTo map OTA/AO type 43C3 tibial pilon fractures by means of computed tomography and analyze the difference between varus and valgus fractures. We hypothesized that valgus fractures are less frequent than varus, and the affected zones of the tibial pilon are different among the patterns.Material And MethodsRetrospective, cross-sectional, observational study, using images of 73 computed tomographies of patients who had presented OTA/AO type 43C3 tibial pilon fractures. The radiographs and computed tomography were subdivided into two groups: varus and valgus fractures. Also, the presence or absence of fibula fractures. Both groups were subdivided into eight zones: four lateral to the pilon and four medial.ResultsThe distribution of total affected zones is significantly different in the male and female subgroups (p = 0.027). The incidence of cases in zone 1 is significantly different in varus and valgus displacement subgroups (p = 0.002). In the patients with valgus displacements, 61.9% of the fractures affect zone 1; in the patients with varus displacements, only 25.8% of the fractures affect zone 1. In the patients without fibula fracture, 58.3% of the fractures affect zone 2; in the patients with fibula fracture, 24.6% of the fractures affect zone 2.ConclusionThe typical profile of the patient with a pilon fracture is age ranging from 27 to 57 years, male, with fibular fracture, and the injury affecting two or three pilon zones, with zones 6, 1, and 3 being the most affected ones. There is no typicality regarding the valgus or varus fracture displacement, although a difference was found in zone 1.Copyright © 2021. Published by Elsevier Ltd.
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