Estudo radiográfico da ossificação dos ligamentos pterigoespinhoso e pterigoalar pela técnica axial de Hirtz invertida
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Data
2008-07-04
Autores
Rosa, Rafaela Rangel [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
A correta identificação radiográfica da ossificação dos ligamentos pterigoespinhoso e pterigoalar é de grande importância nos procedimentos cirúrgicos no tratamento da nevralgia trigeminal. A maioria desses procedimentos é feita via forame oval, local onde é possível encontrar esses ligamentos ossificados parcial ou totalmente. Estudou-se, pela técnica axial de Hirtz invertida, as características radiográficas desses ligamentos ossificados e sua localização em relação ao forame oval. Para isso foram radiografados 93 crânios secos, pertencentes à Disciplina de Anatomia da Faculdade de Odontologia de São José dos Campos - UNESP, que apresentavam a ossificação parcial ou total dos referidos ligamentos. Encontrou-se o ligamento pterigoespinhoso em 27,97% das radiografias, sendo parcialmente ossificado em 19,36% e totalmente em 8,61%. O ligamento pterigoalar estava presente em 62,35% das radiografias, estando parcialmente ossificado em 49,44% e totalmente em 12,91%. O ligamento pterigoespinhoso foi encontrado parcial e totalmente ossificado, numa mesma radiografia, em 3,23% dos casos, enquanto o ligamento pterigoalar apareceu parcial e totalmente ossificado, na mesma radiografia, em 6,45% dos casos. Observou-se ainda que o ligamento pterigoespinhoso era menos espesso e localizado mais para medial em relação ao forame oval, enquanto o ligamento pterigoalar formava uma larga barra óssea lateralmente ao forame oval, obliterando muitas vezes o lúmen do mesmo. A técnica axial de Hirtz invertida é um excelente meio para a observação da ossificação total ou parcial destes ligamentos, quando de procedimentos cirúrgicos que utilizam o forame oval para o tratamento da nevralgia trigeminal.
The correct radiographical identification of ossification of pterigospinous and pterigoalar ligament has great importance in surgical procedures in nevralgia trigeminal treatment. Most of them were made by ovale foramen where it is possible to find the ligament partial or total ossificated. The radiographical characteristics of this ligament and the relation of them with ovale foramen were studied by inverted Hirtz axial technique. Ninety-three dried skulls, belonging to the UNESP Subject of Anatomy-University of Dental School of São José dos Campos having ossified pterigospinous and pterygoalar ligament, were x-rayed. Pterigospinous ligament was found in 27,97% of x-rays, partially ossified in 19,36% and totally ossified in 8,61%. In 3,23% of them it was found partially and totally ossified in the same radiography. Pterygoalar ligament was found present in 62,35% of the x-rays, partially ossified in 49,44% and totally ossified in 12,91%. In 6,45% of them it was found partially and totally ossified in the same radiography. It was still observed that pterigospinous ligament was a more fine bar and placed in a medial position in relation of ovale foramen, however, pterigoalar ligament formed a large bar placed in a lateral position in relation of ovale foramen, which hidden the lumen of this foramen. The inverted Hirtz axial technique allows us excelent observation of the ossified ligament and procedures for nevralgia trigeminal treatment, by ovale foramen
The correct radiographical identification of ossification of pterigospinous and pterigoalar ligament has great importance in surgical procedures in nevralgia trigeminal treatment. Most of them were made by ovale foramen where it is possible to find the ligament partial or total ossificated. The radiographical characteristics of this ligament and the relation of them with ovale foramen were studied by inverted Hirtz axial technique. Ninety-three dried skulls, belonging to the UNESP Subject of Anatomy-University of Dental School of São José dos Campos having ossified pterigospinous and pterygoalar ligament, were x-rayed. Pterigospinous ligament was found in 27,97% of x-rays, partially ossified in 19,36% and totally ossified in 8,61%. In 3,23% of them it was found partially and totally ossified in the same radiography. Pterygoalar ligament was found present in 62,35% of the x-rays, partially ossified in 49,44% and totally ossified in 12,91%. In 6,45% of them it was found partially and totally ossified in the same radiography. It was still observed that pterigospinous ligament was a more fine bar and placed in a medial position in relation of ovale foramen, however, pterigoalar ligament formed a large bar placed in a lateral position in relation of ovale foramen, which hidden the lumen of this foramen. The inverted Hirtz axial technique allows us excelent observation of the ossified ligament and procedures for nevralgia trigeminal treatment, by ovale foramen
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Palavras-chave
Radiografia, Ligamento pterigoespinhoso ossificado, Ligamento pterigolar
Como citar
ROSA, Rafaela Rangel. Estudo radiográfico da ossificação dos ligamentos pterigoespinhoso e pterigoalar pela técnica axial de Hirtz invertida. 2008. 93 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Odontologia de São José dos Campos, 2008.