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CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2022; 57(06): 930-940
DOI: 10.1055/s-0042-1744293
Artigo Original
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Sacro-pelvic Anthropometry in the Portuguese Population and Its Implication for Screw Placement in Spinal Surgery: A Single Centre Retrospective Analysis

Article in several languages: português | English
Catarina da Silva Pereira 
1   Departamento de Ortopedia, Centro Hospitalar do Porto, Porto, Portugal
,
André Oliveira Maçães
1   Departamento de Ortopedia, Centro Hospitalar do Porto, Porto, Portugal
2   Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
,
Carolina Luisa Lemos
2   Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
3   Instituto de Investigação e Inovação em Saúde (I3S), Universidade do Porto, Porto, Portugal
,
Ricardo Rodrigues-Pinto 
1   Departamento de Ortopedia, Centro Hospitalar do Porto, Porto, Portugal
2   Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
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Abstract

Objective The aim of this study was to assess the sacropelvic anthropometry in the Portuguese population, through the study of pelvic computed tomography (CT) scans.

Methods Pelvic CT scans of 40 individuals were analyzed, and the length and angle measurements were performed according to predefined screw trajectories of S1 anterior (S1A), anterolateral (S1AL) and anteromedial (S1AM), S2 anterolateral (S2AL) and anteromedial (S2AM), S2 alar iliac (S2AI), iliac, and sacroiliac (SI) screws. Comparisons between genders were also performed.

Results The S1A screw trajectory mean length was 30.80 mm. The S1AL mean length and lateral angle were 36.48 mm and 33.13°, respectively, and the S1AM's were 46.23 mm and 33.21°. The S2AL mean length was 28.66 mm and lateral angle was 26.52°, and the S2AM length and angle were 29.99 mm and 33.61°, respectively. The S2 alar-iliac screw trajectory mean length, lateral, and caudal angles were 125.84 mm, 36.78°, and 28.66°, respectively. The iliac screw trajectory mean length, lateral, and caudal angles were 136.73 mm, 23,86° and 24.01°, respectively. The sacroiliac screw trajectory length was 75.50 mm. The length of the screws was longer in men than in women, except for the S1A and SI screws, for which no difference was found between genders.

Conclusion This study describes sacropelvic anatomical specifications. These defined morphometric details should be taken into consideration during surgical procedures.

Keywords

spinal fusion - lumbar vertebrae - sacrum - anthropometry - bone screws

Financial Disclosure

The authors have no financial disclosures to declare.


Work developed at the Centro Hospitalar Universitário do Porto, Porto, Portugal. Both authors, Catarina da Silva Pereira and André Oliveira Maçães, contributed equally to the manuscript.




Publication History

Received: 14 June 2021

Accepted: 20 January 2022

Article published online:
25 April 2022

© 2022. Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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