Estudo radiológico do valor angular da cifose torácica em adolescentes

Abstract

OBJETIVO: determinar a diferença dos valores angulares da cifose torácica utilizando como vértebra terminal cranial diferentes níveis (T2 a T5). MÉTODOS: foram avaliadas radiografias em perfil de cem adolescentes voluntários saudáveis da Escola Industrial do Serviço Social da Indústria (SESI) de Ribeirão Preto (SP), com prévia autorização dos pais ou responsáveis. Foram excluídas as radiografias de dez indivíduos por falhas na qualidade. Os parâmetros avaliados foram: mensuração da cifose torácica pelo método de Cobb, utilizando T2, T3, T4 ou T5 como vértebra terminal cranial e T12 como vértebra terminal caudal. RESULTADOS: foram avaliados 90 indivíduos (46 do sexo masculino e 44 do feminino), com idade variando de 13 a 15 anos (média 14±6). O valor angular da cifose torácica nos diferentes níveis variou entre 45º (T2-T12) e 35º (T5-T12) no sexo masculino, e valor angular entre 43º(T2-T12) e 30º (T5-T12) no sexo feminino. CONCLUSÃO: foi observada diferença constante de aproximadamente 5º quando comparados os valores angulares da cifose torácica utilizando diferentes níveis (T2 a T5) como vértebra terminal cranial.

Adolescent Idiopathic Scoliosis and Similar Conditions: Three-Dimensional Classification

“…The Spine Groups of the Instituto da Coluna Vertebral and of the Orthopedics and Traumatology Service of the Santa Casa, both located in Belo Horizonte, had as their objective the creation of a quantitative Three-Dimensional Classification System for AIS and similar conditions, categorizing all deformities into only three basic types, including an overall three-dimensional evaluation using data and knowledge pre-established in the literature. 9,10 This study considered structural curves greater the 10° associated with rotation to be scoliosis.…”

“…It is considered (-) hypokyphosis when the angle is less than 25°, (N) normal when the angle is between 25° and 45°, and (+) a hyperkyphosis deformity above 45°. 9 Lumbar lordosis of the spine was measured using the Cobb method, obtained by drawing a straight line in the upper plateau of L1 and another in the upper surface of S1. A straight line was drawn perpendicular to these two lines forming the angle to be measured.…”

“…In the Three-Dimensional Classification the entire extension of kyphosis is measured, from the upper plateau of the upper terminal vertebra to the lower plateau of the lower terminal vertebra. 9 Figures 1C and 4 to 13.…”

“…8 To measure thoracic kyphosis, the authors considered (-) to indicate a hypokyphotic curve less than 25°, (N) to indicate a normal angle between 25° and 45°, and (+) a hyperkyphotic deformity of greater than 45°. 9 That author measured lumbar lordosis of the spine using the Cobb method, obtained by drawing a straight line in the upper plateau of L1 (A) and another in the upper surface of S1 (B). Two straight lines were drawn perpendicular to these lines and their intersection formed the desired angle, the normal value of which ranges from 40º to 60º.…”