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Mechanical evaluation of canine sacroiliac joint stabilization using two short screws
OBJECTIVE: To assess the feasibility and mechanical stability of sacroiliac (SI) joint stabilization using 2 short 3.5 mm cortical screws, each spanning an average of 23% of the width of the sacral body. STUDY DESIGN: Cadaveric experimental study. SAMPLE POPULATION: Twenty‐four canine pelvis specime...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley & Sons, Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9804304/ https://www.ncbi.nlm.nih.gov/pubmed/35929727 http://dx.doi.org/10.1111/vsu.13857 |
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author | Hanlon, John Hudson, Caleb C. Litsky, Alan S. Jones, Stephen C. |
author_facet | Hanlon, John Hudson, Caleb C. Litsky, Alan S. Jones, Stephen C. |
author_sort | Hanlon, John |
collection | PubMed |
description | OBJECTIVE: To assess the feasibility and mechanical stability of sacroiliac (SI) joint stabilization using 2 short 3.5 mm cortical screws, each spanning an average of 23% of the width of the sacral body. STUDY DESIGN: Cadaveric experimental study. SAMPLE POPULATION: Twenty‐four canine pelvis specimens. METHODS: Pelvis specimens were prepared by disarticulation of the left SI joint and osteotomy of the left pubis and left ischium, and stabilized using a single long lag screw (LLS), 2 short lag screws (SLS) or 2 short positional screws (SPS). Computed tomography (CT) imaging was used to determine standardized screw lengths for each group and was repeated following implant insertion. Specimens were secured within a servohydraulic test frame and loaded through the acetabulum to simulate weight bearing under displacement control at 4 mm/min for 20 mm total displacement. Group mechanical testing data were compared. RESULTS: Peak load, yield load, and stiffness were more than 2 times greater in both the SLS and SPS groups when compared with the LLS group. No mechanical difference was identified between the short‐screw groups. CONCLUSION: Sacroiliac luxation fixation using 2 short screws created a stronger, stiffer construct when compared with fixation using a single lag screw spanning 60% of the width of the sacral body. No mechanical advantage was observed between short screws inserted in positional vs. lag fashion. CLINICAL SIGNIFICANCE: Sacroiliac luxation fixation using 2 short screws creates a mechanically superior construct with a larger region of acceptable implant positioning and potentially reduced risk of iatrogenic injury compared with conventional fixation. |
format | Online Article Text |
id | pubmed-9804304 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley & Sons, Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-98043042023-01-03 Mechanical evaluation of canine sacroiliac joint stabilization using two short screws Hanlon, John Hudson, Caleb C. Litsky, Alan S. Jones, Stephen C. Vet Surg Experimental Lab Research OBJECTIVE: To assess the feasibility and mechanical stability of sacroiliac (SI) joint stabilization using 2 short 3.5 mm cortical screws, each spanning an average of 23% of the width of the sacral body. STUDY DESIGN: Cadaveric experimental study. SAMPLE POPULATION: Twenty‐four canine pelvis specimens. METHODS: Pelvis specimens were prepared by disarticulation of the left SI joint and osteotomy of the left pubis and left ischium, and stabilized using a single long lag screw (LLS), 2 short lag screws (SLS) or 2 short positional screws (SPS). Computed tomography (CT) imaging was used to determine standardized screw lengths for each group and was repeated following implant insertion. Specimens were secured within a servohydraulic test frame and loaded through the acetabulum to simulate weight bearing under displacement control at 4 mm/min for 20 mm total displacement. Group mechanical testing data were compared. RESULTS: Peak load, yield load, and stiffness were more than 2 times greater in both the SLS and SPS groups when compared with the LLS group. No mechanical difference was identified between the short‐screw groups. CONCLUSION: Sacroiliac luxation fixation using 2 short screws created a stronger, stiffer construct when compared with fixation using a single lag screw spanning 60% of the width of the sacral body. No mechanical advantage was observed between short screws inserted in positional vs. lag fashion. CLINICAL SIGNIFICANCE: Sacroiliac luxation fixation using 2 short screws creates a mechanically superior construct with a larger region of acceptable implant positioning and potentially reduced risk of iatrogenic injury compared with conventional fixation. John Wiley & Sons, Inc. 2022-08-05 2022-10 /pmc/articles/PMC9804304/ /pubmed/35929727 http://dx.doi.org/10.1111/vsu.13857 Text en © 2022 The Authors. Veterinary Surgery published by Wiley Periodicals LLC on behalf of American College of Veterinary Surgeons. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Experimental Lab Research Hanlon, John Hudson, Caleb C. Litsky, Alan S. Jones, Stephen C. Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title | Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title_full | Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title_fullStr | Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title_full_unstemmed | Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title_short | Mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
title_sort | mechanical evaluation of canine sacroiliac joint stabilization using two short screws |
topic | Experimental Lab Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9804304/ https://www.ncbi.nlm.nih.gov/pubmed/35929727 http://dx.doi.org/10.1111/vsu.13857 |
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