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Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans
BACKGROUND: Trochlear dysplasia is an important pathological factor in patellofemoral instability. Quantitative evaluation of the severity of trochlear dysplasia is rare and remains unclear. MATERIAL/METHODS: Computed tomography (CT) data on 136 knees (95 patients) with trochlear dysplasia in the ca...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Scientific Literature, Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6067015/ https://www.ncbi.nlm.nih.gov/pubmed/30036357 http://dx.doi.org/10.12659/MSM.908102 |
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author | Dong, Zhenyue Niu, Yingzhen Duan, Guman Song, Yifan Qi, Jianchao Wang, Fei |
author_facet | Dong, Zhenyue Niu, Yingzhen Duan, Guman Song, Yifan Qi, Jianchao Wang, Fei |
author_sort | Dong, Zhenyue |
collection | PubMed |
description | BACKGROUND: Trochlear dysplasia is an important pathological factor in patellofemoral instability. Quantitative evaluation of the severity of trochlear dysplasia is rare and remains unclear. MATERIAL/METHODS: Computed tomography (CT) data on 136 knees (95 patients) with trochlear dysplasia in the case group and an age- and sex-matched cohort of 120 knees (70 patients) in the control group were collected for this retrospective study. All participants had undergone CT scans in the supine position. The trochlear angles (TA) formed by the posterior condylar line and the trochlear line were calculated and compared. The threshold for statistical significance was set at p<0.05. RESULTS: The mean TA values were significantly greater in the case group compared to the control group independent of sex (p<0.01). The distribution of trochlear dysplasia of Dejour grades was type A n=34, type B n=31, type C n=40, and type D n=31. Except for types A and B, differences in the trochlear dysplasia grade between any 2 other types were statistically significant (p<0.01). CONCLUSIONS: The technique of measuring TA is reproducible and accurate in patients with patellar instability and normal controls. The TA positively correlates with higher levels of trochlear dysplasia. This technique can help to evaluate and treat trochlear dysplasia in research as well as in clinical practice. |
format | Online Article Text |
id | pubmed-6067015 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | International Scientific Literature, Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-60670152018-07-31 Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans Dong, Zhenyue Niu, Yingzhen Duan, Guman Song, Yifan Qi, Jianchao Wang, Fei Med Sci Monit Clinical Research BACKGROUND: Trochlear dysplasia is an important pathological factor in patellofemoral instability. Quantitative evaluation of the severity of trochlear dysplasia is rare and remains unclear. MATERIAL/METHODS: Computed tomography (CT) data on 136 knees (95 patients) with trochlear dysplasia in the case group and an age- and sex-matched cohort of 120 knees (70 patients) in the control group were collected for this retrospective study. All participants had undergone CT scans in the supine position. The trochlear angles (TA) formed by the posterior condylar line and the trochlear line were calculated and compared. The threshold for statistical significance was set at p<0.05. RESULTS: The mean TA values were significantly greater in the case group compared to the control group independent of sex (p<0.01). The distribution of trochlear dysplasia of Dejour grades was type A n=34, type B n=31, type C n=40, and type D n=31. Except for types A and B, differences in the trochlear dysplasia grade between any 2 other types were statistically significant (p<0.01). CONCLUSIONS: The technique of measuring TA is reproducible and accurate in patients with patellar instability and normal controls. The TA positively correlates with higher levels of trochlear dysplasia. This technique can help to evaluate and treat trochlear dysplasia in research as well as in clinical practice. International Scientific Literature, Inc. 2018-07-23 /pmc/articles/PMC6067015/ /pubmed/30036357 http://dx.doi.org/10.12659/MSM.908102 Text en © Med Sci Monit, 2018 This work is licensed under Creative Common Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0 (https://creativecommons.org/licenses/by-nc-nd/4.0/) ) |
spellingShingle | Clinical Research Dong, Zhenyue Niu, Yingzhen Duan, Guman Song, Yifan Qi, Jianchao Wang, Fei Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title | Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title_full | Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title_fullStr | Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title_full_unstemmed | Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title_short | Evaluation of Trochlear Dysplasia Severity Using Trochlear Angle: A Retrospective Study Based on Computed Tomography (CT) Scans |
title_sort | evaluation of trochlear dysplasia severity using trochlear angle: a retrospective study based on computed tomography (ct) scans |
topic | Clinical Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6067015/ https://www.ncbi.nlm.nih.gov/pubmed/30036357 http://dx.doi.org/10.12659/MSM.908102 |
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