Posterior tibial slope correlated with metaphyseal inclination more than metaphyseal height.
ACL
Correlation
Posterior tibial slope
TDO
Tibial deflexion osteotomy
Journal
The Knee
ISSN: 1873-5800
Titre abrégé: Knee
Pays: Netherlands
ID NLM: 9430798
Informations de publication
Date de publication:
Oct 2023
Oct 2023
Historique:
received:
10
04
2023
revised:
11
07
2023
accepted:
04
08
2023
medline:
30
10
2023
pubmed:
17
9
2023
entrez:
17
9
2023
Statut:
ppublish
Résumé
Excessive posterior tibial slope (PTS) is an independent risk factor for anterior cruciate ligament reconstruction (ACLR) failure, but it remains unclear how PTS relates to other proximal tibial morphologic parameters. The purpose of this study was to analyse sagittal tibial metaphysis morphology, and to calculate the correlation coefficients of PTS with anatomical features. The authors retrospectively reviewed lateral radiographs of 350 patients that were scheduled to receive primary ACLR to digitize 15 landmarks on the patella, femur, fibula, and tibia, and measure PTS, patellar height, as well as metaphysis height and inclination. Pearson correlation coefficients (r) were computed to assess the linear relationship of PTS with other parameters. The PTS was 9.8 ± 3.1° (mid-shaft axis), anterior metaphyseal height and inclination was 30.9 ± 4.6 mm and 33.9 ± 7.2°, and posterior metaphyseal height and inclination was 16.1 ± 4.0 mm and 22.0 ± 5.8°. PTS had a low correlation with anterior (r, 0.225) and posterior metaphyseal heights (r, -0.183). PTS had moderate correlations with anterior (r, 0.385) and posterior metaphysis inclination (r, 0.417). PTS has a low correlation with anterior metaphyseal height, but a moderate correlation with anterior and posterior metaphyseal inclination. The moderate correlation between PTS and metaphysis inclination sheds light on the origin of the deformity, and knees with higher PTS are therefore likely to have metaphyses with greater posterior inclinations. The clinical relevance of these findings is that tibial deflexion osteotomy techniques should attempt to address the underlying deformity of excessive PTS by adjusting metaphyseal inclination rather than making diaphyseal resections.
Sections du résumé
BACKGROUND
BACKGROUND
Excessive posterior tibial slope (PTS) is an independent risk factor for anterior cruciate ligament reconstruction (ACLR) failure, but it remains unclear how PTS relates to other proximal tibial morphologic parameters. The purpose of this study was to analyse sagittal tibial metaphysis morphology, and to calculate the correlation coefficients of PTS with anatomical features.
METHODS
METHODS
The authors retrospectively reviewed lateral radiographs of 350 patients that were scheduled to receive primary ACLR to digitize 15 landmarks on the patella, femur, fibula, and tibia, and measure PTS, patellar height, as well as metaphysis height and inclination. Pearson correlation coefficients (r) were computed to assess the linear relationship of PTS with other parameters.
RESULTS
RESULTS
The PTS was 9.8 ± 3.1° (mid-shaft axis), anterior metaphyseal height and inclination was 30.9 ± 4.6 mm and 33.9 ± 7.2°, and posterior metaphyseal height and inclination was 16.1 ± 4.0 mm and 22.0 ± 5.8°. PTS had a low correlation with anterior (r, 0.225) and posterior metaphyseal heights (r, -0.183). PTS had moderate correlations with anterior (r, 0.385) and posterior metaphysis inclination (r, 0.417).
CONCLUSION
CONCLUSIONS
PTS has a low correlation with anterior metaphyseal height, but a moderate correlation with anterior and posterior metaphyseal inclination. The moderate correlation between PTS and metaphysis inclination sheds light on the origin of the deformity, and knees with higher PTS are therefore likely to have metaphyses with greater posterior inclinations. The clinical relevance of these findings is that tibial deflexion osteotomy techniques should attempt to address the underlying deformity of excessive PTS by adjusting metaphyseal inclination rather than making diaphyseal resections.
Identifiants
pubmed: 37717277
pii: S0968-0160(23)00179-5
doi: 10.1016/j.knee.2023.08.007
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
262-269Investigateurs
Jacobus H Müller
(JH)
Mo Saffarini
(M)
Informations de copyright
Copyright © 2023 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.