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Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study
BACKGROUND: During cup implantation, vertical height of the cup center (V-HCC) should be precisely controlled to achieve sufficient bone-cup coverage (BCC). Our study aimed to investigate the acetabular bone stock and the quantitative relationship between V-HCC and BCC in Crowe types I to III hips....
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Wolters Kluwer Health
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6940065/ https://www.ncbi.nlm.nih.gov/pubmed/31856053 http://dx.doi.org/10.1097/CM9.0000000000000527 |
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author | Zheng, Lin-Li Lin, Yang-Yang Zhang, Xiao-Yan Ling, Qian-Hui Liao, Wei-Ming Wu, Pei-Hui |
author_facet | Zheng, Lin-Li Lin, Yang-Yang Zhang, Xiao-Yan Ling, Qian-Hui Liao, Wei-Ming Wu, Pei-Hui |
author_sort | Zheng, Lin-Li |
collection | PubMed |
description | BACKGROUND: During cup implantation, vertical height of the cup center (V-HCC) should be precisely controlled to achieve sufficient bone-cup coverage (BCC). Our study aimed to investigate the acetabular bone stock and the quantitative relationship between V-HCC and BCC in Crowe types I to III hips. METHODS: From November 2013 to March 2016, pelvic models of 51 patients (61 hips) with hip dysplasia were retrospectively reconstructed using a computer software. Acetabular height and doom thickness were measured on the mid-acetabular coronal cross section. V-HCC was defined as the vertical distance of cup rotational center to the interteardrop line (ITL). In the cup implantation simulation, the cup was placed at the initial preset position, with a V-HCC of 15 mm, and moved proximally by 3-mm increments. At each level, the BCC was automatically calculated by computer. Analysis of variance and Kruskal-Wallis test were used to compare the differences between groups. RESULTS: There were no significant between-group differences in maximum thickness of the acetabular doom; however, peak bone stock values were obtained at heights of 41.63 ± 5.14 mm (Crowe type I), 47.58 ± 4.10 mm (Crowe type II), and 55.78 ± 3.64 mm (Crowe type III) above the ITL. At 15 mm of V-HCC, median BCC was 78% (75–83%) (Crowe type I), 74% (66–71%) (Crowe type II), and 61% (57–68%) (Crowe type III). To achieve 80% of the BCC, the median V-HCC was 16.27 (15.00–16.93) mm, 18.19 (15.01–21.53) mm, and 24.13 (21.02–28.70) mm for Crowe types I, II, and III hips, respectively. CONCLUSION: During acetabular reconstruction, slightly superior placement with V-HCC <25 mm retained sufficient bone coverage in Crowe I to III hips. |
format | Online Article Text |
id | pubmed-6940065 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Wolters Kluwer Health |
record_format | MEDLINE/PubMed |
spelling | pubmed-69400652020-02-04 Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study Zheng, Lin-Li Lin, Yang-Yang Zhang, Xiao-Yan Ling, Qian-Hui Liao, Wei-Ming Wu, Pei-Hui Chin Med J (Engl) Original Articles BACKGROUND: During cup implantation, vertical height of the cup center (V-HCC) should be precisely controlled to achieve sufficient bone-cup coverage (BCC). Our study aimed to investigate the acetabular bone stock and the quantitative relationship between V-HCC and BCC in Crowe types I to III hips. METHODS: From November 2013 to March 2016, pelvic models of 51 patients (61 hips) with hip dysplasia were retrospectively reconstructed using a computer software. Acetabular height and doom thickness were measured on the mid-acetabular coronal cross section. V-HCC was defined as the vertical distance of cup rotational center to the interteardrop line (ITL). In the cup implantation simulation, the cup was placed at the initial preset position, with a V-HCC of 15 mm, and moved proximally by 3-mm increments. At each level, the BCC was automatically calculated by computer. Analysis of variance and Kruskal-Wallis test were used to compare the differences between groups. RESULTS: There were no significant between-group differences in maximum thickness of the acetabular doom; however, peak bone stock values were obtained at heights of 41.63 ± 5.14 mm (Crowe type I), 47.58 ± 4.10 mm (Crowe type II), and 55.78 ± 3.64 mm (Crowe type III) above the ITL. At 15 mm of V-HCC, median BCC was 78% (75–83%) (Crowe type I), 74% (66–71%) (Crowe type II), and 61% (57–68%) (Crowe type III). To achieve 80% of the BCC, the median V-HCC was 16.27 (15.00–16.93) mm, 18.19 (15.01–21.53) mm, and 24.13 (21.02–28.70) mm for Crowe types I, II, and III hips, respectively. CONCLUSION: During acetabular reconstruction, slightly superior placement with V-HCC <25 mm retained sufficient bone coverage in Crowe I to III hips. Wolters Kluwer Health 2019-12-05 2019-12-05 /pmc/articles/PMC6940065/ /pubmed/31856053 http://dx.doi.org/10.1097/CM9.0000000000000527 Text en Copyright © 2019 The Chinese Medical Association, produced by Wolters Kluwer, Inc. under the CC-BY-NC-ND license. http://creativecommons.org/licenses/by-nc-nd/4.0 This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0 |
spellingShingle | Original Articles Zheng, Lin-Li Lin, Yang-Yang Zhang, Xiao-Yan Ling, Qian-Hui Liao, Wei-Ming Wu, Pei-Hui Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title | Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title_full | Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title_fullStr | Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title_full_unstemmed | Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title_short | Best bone of acetabulum for cup component placement in Crowe types I to III dysplastic hips: a computer simulation study |
title_sort | best bone of acetabulum for cup component placement in crowe types i to iii dysplastic hips: a computer simulation study |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6940065/ https://www.ncbi.nlm.nih.gov/pubmed/31856053 http://dx.doi.org/10.1097/CM9.0000000000000527 |
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