MORPHOMETRY OF THE PEDICLE OF FIRST SACRAL VERTEBRAE AND ITS APPLICATION IN POSTERIOR TRANSPEDICULAR SCREW FIXATION. Morfometría del pedículo de la primera vértebra sacra y su aplicación en la fijación posterior con tornillo transpedicular

Mangala M Pai, Bukkambudhi V Murlimanju, Latha V Prabhu, Rajanigandha Vadgaonkar, P P. Jagadish Rao, Janardhanan Jiji, Prameela Dass

Resumen


Los objetivos del presente estudio fueron determinar los parámetros anatómicos del pedículo S1 en la población India del sur para comparar los datos con respecto a los géneros masculinos y femeninos. El estudio incluyó 50 sacros secos (25 hombres y 25 mujeres) que se obtuvieron en el laboratorio de anatomía de nuestra institución. En el presente estudio se observa que la longitud media del pedículo S1 fue 49.9± 3,6 mm para los hombres y 46.3± 4,8 mm para las mujeres. La altura céfalo-caudal del pedículo S1 fue 27.2±4.0 mm y 23.9±3.7 mm para el varón y la hembra respectivamente. La anchura antero-posterior del pedículo S1 fue 7.5± 1,3 mm, 7.5± 1.7 mm en varones y mujeres, respectivamente. La distancia antero-posterior de S1, desde el promontorio sacro a la apófisis espinosa de S1 fue 52.9± 5.2 mm y 50.4± 6.8 mm en los géneros masculino y femenino respectivamente. El presente estudio demostró que la longitud y la altura de céfalo-caudal eran más altos (p0.05) en varones que en mujeres. Los datos de mujeres y varones con respecto a la anchura antero-posterior y la distancia antero-posterior de S1 no eran estadísticamente diferentes. El presente estudio ha proporcionado datos morfométricos importantes del pedículo de la primera vértebra sacra de la muestra anatómica de la población India del sur. El conocimiento de los diámetros del pedículo de S1 es crucial para la colocación segura de tornillos para la fijación transpedicular posterior.

 

Objectives of the present study were to determine the anatomical parameters of the S1 pedicle in South Indian population and to compare the data, with respect to male and female genders. The stud­­y included 50 dry sacra (25 male and 25 female), which were obtained from the anatomy laboratory of our institution. It is observed in the present study that the mean S1 pedicle length was 49.9± 3.6 mm for male and 46.3± 4.8 mm for the female. The cephalocaudal heights of S1 pedicle were 27.2±4.0 mms and 23.9±3.7 mms for the male and female respectively. The anteroposterior width of S1 pedicle was 7.5± 1.3 mms, 7.5± 1.7 mms in males and females respectively. The anteroposterior distances of S1, from the sacral promontory to the spinous process of S1 were 52.9± 5.2 mms and 50.4± 6.8 mms respectively for the male and female genders. The present study observed that the mean S1 pedicle length and the cephalocaudal height were higher (p<0.05) for the males than that of females. The data (male vs female) were not found statistically different (p>0.05), with respect to the anteroposterior width of the S1 pedicle and the anteroposterior distances of S1 from the sacral promontory to the spinous process of S1. The present study has provided important morphometric data onto the pedicle of the first sacral vertebrae, from the anatomical samples of the South Indian population. The knowledge of pedicle diameters of S1 is crucial to the safe placement of screws in the posterior transpedicular screw fixation.


Palabras clave


pedicle; sacrum; spine; screw; vertebra; Pedículo, sacro; columna vertebral; tornillo; vértebra

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DOI: http://dx.doi.org/10.31051/1852.8023.v6.n3.14140

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