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Relation of native acetabular anteversion to the orientation of transverse acetabular ligament

M. Kuchař, O. Pelc, A. Morávek, P. Henyš, A. Heinemann, B. Ondruschka, T. Kučera

. 2024 ; 34 (6) : 754-763. [pub] 20240910

Language English Country United States

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc25003665

BACKGROUND: Precise positioning of the acetabular component during total hip replacement is the key to achieving optimal implant function and ensuring long-term patient comfort. However, different anatomical variations, degenerative changes, dysplasia, and other diseases make it difficult. In this study, we discuss a method based on the three-dimensional direction of the transverse ligament, predicting native acetabular anteversion with higher accuracy. METHODS: Angular positions of the acetabulum and direction of the transverse ligament were automatically calculated from routine computed tomography data of 270 patients using a registration algorithm. The relationship between acetabular angles and ligament direction and their relationship with sex, age, and pelvic tilt were sought. These relationships were then modelled using multilinear regression. RESULTS: Including the direction of the transverse ligament in the sagittal and transverse planes as a regressor in the multilinear model explained the variation in acetabular anteversion (R2 = 0.76 for men, R2 = 0.63 for women; standard deviation in prediction: men, 3.92° and women, 4.00°). CONCLUSIONS: The results indicate that the ligament was suitable as a guidance structure almost insensitive to the ligament in the sagittal and transverse planes must be considered. Estimation based on the direction in only 1 plane was not sufficiently accurate. The operative acetabular inclination was not correlated with the direction of the ligament. The correlations were higher in men than in women.

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$a Relation of native acetabular anteversion to the orientation of transverse acetabular ligament / $c M. Kuchař, O. Pelc, A. Morávek, P. Henyš, A. Heinemann, B. Ondruschka, T. Kučera
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$a BACKGROUND: Precise positioning of the acetabular component during total hip replacement is the key to achieving optimal implant function and ensuring long-term patient comfort. However, different anatomical variations, degenerative changes, dysplasia, and other diseases make it difficult. In this study, we discuss a method based on the three-dimensional direction of the transverse ligament, predicting native acetabular anteversion with higher accuracy. METHODS: Angular positions of the acetabulum and direction of the transverse ligament were automatically calculated from routine computed tomography data of 270 patients using a registration algorithm. The relationship between acetabular angles and ligament direction and their relationship with sex, age, and pelvic tilt were sought. These relationships were then modelled using multilinear regression. RESULTS: Including the direction of the transverse ligament in the sagittal and transverse planes as a regressor in the multilinear model explained the variation in acetabular anteversion (R2 = 0.76 for men, R2 = 0.63 for women; standard deviation in prediction: men, 3.92° and women, 4.00°). CONCLUSIONS: The results indicate that the ligament was suitable as a guidance structure almost insensitive to the ligament in the sagittal and transverse planes must be considered. Estimation based on the direction in only 1 plane was not sufficiently accurate. The operative acetabular inclination was not correlated with the direction of the ligament. The correlations were higher in men than in women.
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$a Pelc, Ondřej $u Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic
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$a Morávek, Alexander $u Department of Anatomy, Faculty of Medicine in Hradec Králové, Charles University - Šimkova, Hradec Králové, Czech Republic
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$a Henyš, Petr $u Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Liberec, Czech Republic
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$a Heinemann, Axel $u Institute of Legal Medicine, University Medical Centre Hamburg - Eppendorf, Hamburg, Germany
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