Camilo Partezani Helito1,2, Paulo Victor Partezani Helito3,4, Renata Vidal Leão3,4, Isabel Curcio Felix Louza3, Marcelo Bordalo-Rodrigues3,4, Giovanni Guido Cerri3,5. 1. Hospital Sírio Libanês, São Paulo, Brazil. camilo_helito@yahoo.com.br. 2. Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil. camilo_helito@yahoo.com.br. 3. Hospital Sírio Libanês, São Paulo, Brazil. 4. Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil. 5. Instituto de Radiologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
Abstract
OBJECTIVE: To characterize the anterolateral ligament (ALL) in normal knees of pediatric patients by magnetic resonance imaging (MRI) and to establish the age at which it is possible to visualize its presence and whether there are differences between male and female populations. MATERIALS AND METHODS: MRI scans of patients younger than 18 years were retrospectively evaluated. The exams were performed in 1.5-T scanners. The ALL was characterized dichotomously as visualized or not visualized based on the assessment criteria of this structure in adult patients. The characterization of the ALL was divided according to sex and age. RESULTS: A total of 363 knee MRI scans were evaluated, 200 from male and 163 from female patients. The ALL was more frequently visualized in coronal sequences. The mean ALL visualization in pediatric patients was 69.4% and was lower in younger patients and higher in patients close to 18 years. It was not possible to visualize the ALL in female patients younger than 7 years or in male patients younger than 6 years. In patients between 17 and 18 years of age, the ALL was visualized in 100% of cases in both sexes. CONCLUSIONS: Visualization of the ALL increased with age in both sexes. Only after age 13 in females and age 15 in males was visualization of the ALL close to 70%; thus, below these ages, we believe that the characterization of this structure with conventional protocols is still imprecise.
OBJECTIVE: To characterize the anterolateral ligament (ALL) in normal knees of pediatric patients by magnetic resonance imaging (MRI) and to establish the age at which it is possible to visualize its presence and whether there are differences between male and female populations. MATERIALS AND METHODS: MRI scans of patients younger than 18 years were retrospectively evaluated. The exams were performed in 1.5-T scanners. The ALL was characterized dichotomously as visualized or not visualized based on the assessment criteria of this structure in adult patients. The characterization of the ALL was divided according to sex and age. RESULTS: A total of 363 knee MRI scans were evaluated, 200 from male and 163 from female patients. The ALL was more frequently visualized in coronal sequences. The mean ALL visualization in pediatric patients was 69.4% and was lower in younger patients and higher in patients close to 18 years. It was not possible to visualize the ALL in female patients younger than 7 years or in male patients younger than 6 years. In patients between 17 and 18 years of age, the ALL was visualized in 100% of cases in both sexes. CONCLUSIONS: Visualization of the ALL increased with age in both sexes. Only after age 13 in females and age 15 in males was visualization of the ALL close to 70%; thus, below these ages, we believe that the characterization of this structure with conventional protocols is still imprecise.
Authors: Kevin G Shea; John D Polousky; John C Jacobs; Yi-Meng Yen; Theodore J Ganley Journal: J Pediatr Orthop Date: 2016 Jul-Aug Impact factor: 2.324
Authors: Camilo Partezani Helito; Julio Augusto do Prado Torres; Marcelo Batista Bonadio; José Aderval Aragão; Lucas Nogueira de Oliveira; Renato José Mendonça Natalino; José Ricardo Pécora; Gilberto Luis Camanho; Marco Kawamura Demange Journal: Am J Sports Med Date: 2016-10-01 Impact factor: 6.202
Authors: Volker Musahl; Ata A Rahnemai-Azar; Joanna Costello; Justin W Arner; Freddie H Fu; Yuichi Hoshino; Nicola Lopomo; Kristian Samuelsson; James J Irrgang Journal: Am J Sports Med Date: 2016-08-09 Impact factor: 6.202
Authors: Matt Daggett; Camilo Helito; Matthew Cullen; Andrew Ockuly; Kyle Busch; Joseph Granite; Barth Wright; Bertrand Sonnery-Cottet Journal: Orthop J Sports Med Date: 2017-02-22