Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion
Abstract Objective Description of the sacropelvic parameters measurement method for S2-alar iliac (S2AI) screw insertion. Methods Descriptive study of the method for measuring sacropelvic parameters for the insertion of the S2AI screw using computed tomography (CT). The data evaluated in multiplan...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ortopedia e Traumatologia
2021-02-01
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| Series: | Revista Brasileira de Ortopedia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000600702&tlng=en |
| _version_ | 1797330358740451328 |
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| author | Mariana Demétrio de Sousa Pontes Lucas Klarosk Ismael Lucas Américo Francisco Carlos Fernando Pereira da Silva Herrero |
| author_facet | Mariana Demétrio de Sousa Pontes Lucas Klarosk Ismael Lucas Américo Francisco Carlos Fernando Pereira da Silva Herrero |
| author_sort | Mariana Demétrio de Sousa Pontes |
| collection | DOAJ |
| description | Abstract Objective Description of the sacropelvic parameters measurement method for S2-alar iliac (S2AI) screw insertion. Methods Descriptive study of the method for measuring sacropelvic parameters for the insertion of the S2AI screw using computed tomography (CT). The data evaluated in multiplanar reconstructions were the parameters of the screw trajectory, including length, diameter and angles of the trajectory in the axial and sagittal planes. Results From the sagittal reconstruction, the axis of the series of axial slices is angled three-dimensionally so that it is possible to visualize the S2 vertebra, the screw entry point, and the anteroinferior iliac spine (AIIS) in the same plane. The entry point is demarcated at the midpoint between the dorsal foramina of S1 and S2. To measure the length of the screw, lines are drawn tangent to the inner and outer cortices of the iliac. The diameter is determined by the shortest distance between the inner and outer iliac faces minus half of the diameter of the screw chosen medially and laterally. The path angle in the axial plane is formed by the anteroposterior midline of the sacrum and the line of the screw length. The craniocaudal inclination angle in relation to the S1 plateau corresponds to the degree of inclination made in the sagittal plane to find the image in which the entry point and the AIIS are seen in the same plane. Conclusion It was possible to adequately assess, through multiplanar CT reconstructions, the sacropelvic parameters necessary for the safe insertion of the S2AI screw. |
| first_indexed | 2024-03-08T07:17:47Z |
| format | Article |
| id | doaj.art-b741b8f705ce4ca7bc53cbc52bf63ee0 |
| institution | Directory Open Access Journal |
| issn | 1982-4378 |
| language | English |
| last_indexed | 2024-03-08T07:17:47Z |
| publishDate | 2021-02-01 |
| publisher | Sociedade Brasileira de Ortopedia e Traumatologia |
| record_format | Article |
| series | Revista Brasileira de Ortopedia |
| spelling | doaj.art-b741b8f705ce4ca7bc53cbc52bf63ee02024-02-03T00:16:52ZengSociedade Brasileira de Ortopedia e TraumatologiaRevista Brasileira de Ortopedia1982-43782021-02-0155670270710.1055/s-0040-1713163Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw InsertionMariana Demétrio de Sousa Ponteshttps://orcid.org/0000-0001-5962-1467Lucas Klarosk Ismaelhttps://orcid.org/0000-0002-4185-1931Lucas Américo Franciscohttps://orcid.org/0000-0002-0310-5436Carlos Fernando Pereira da Silva Herrerohttps://orcid.org/0000-0002-3387-4797Abstract Objective Description of the sacropelvic parameters measurement method for S2-alar iliac (S2AI) screw insertion. Methods Descriptive study of the method for measuring sacropelvic parameters for the insertion of the S2AI screw using computed tomography (CT). The data evaluated in multiplanar reconstructions were the parameters of the screw trajectory, including length, diameter and angles of the trajectory in the axial and sagittal planes. Results From the sagittal reconstruction, the axis of the series of axial slices is angled three-dimensionally so that it is possible to visualize the S2 vertebra, the screw entry point, and the anteroinferior iliac spine (AIIS) in the same plane. The entry point is demarcated at the midpoint between the dorsal foramina of S1 and S2. To measure the length of the screw, lines are drawn tangent to the inner and outer cortices of the iliac. The diameter is determined by the shortest distance between the inner and outer iliac faces minus half of the diameter of the screw chosen medially and laterally. The path angle in the axial plane is formed by the anteroposterior midline of the sacrum and the line of the screw length. The craniocaudal inclination angle in relation to the S1 plateau corresponds to the degree of inclination made in the sagittal plane to find the image in which the entry point and the AIIS are seen in the same plane. Conclusion It was possible to adequately assess, through multiplanar CT reconstructions, the sacropelvic parameters necessary for the safe insertion of the S2AI screw.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000600702&tlng=ensacroiliac jointspinesacrum |
| spellingShingle | Mariana Demétrio de Sousa Pontes Lucas Klarosk Ismael Lucas Américo Francisco Carlos Fernando Pereira da Silva Herrero Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion Revista Brasileira de Ortopedia sacroiliac joint spine sacrum |
| title | Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion |
| title_full | Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion |
| title_fullStr | Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion |
| title_full_unstemmed | Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion |
| title_short | Description of the Sacropelvic Parameters Measurement Method for S2-alar iliac Screw Insertion |
| title_sort | description of the sacropelvic parameters measurement method for s2 alar iliac screw insertion |
| topic | sacroiliac joint spine sacrum |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162020000600702&tlng=en |
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