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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

12-08-2023 | Osteoarthrosis | KNEE

Coronal and sagittal alignment of ankle joint is significantly affected by high tibial osteotomy

Authors: Byung Hak Oh, Kyung Deok Seo, Youn Moo Heo, Tae Kyun Kim, Jae Kyu Choi, Jae Hwang Song

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 11/2023

Abstract

Purpose

Changes in coronal and sagittal alignment of the knee joint after HTO have been reported in several previous studies. However, only few of them investigated the changes only on coronal alignment of the ankle joint. The purpose of this study was to investigate changes in both coronal and sagittal alignment of the ankle joint after HTO.

Methods

46 patients (49 cases) who underwent HTO were retrospectively analyzed. Preoperative and postoperative lower extremity scanogram and EOS imaging system were investigated. The hip–knee–ankle (HKA) angle, medial proximal tibial angle (MPTA), and knee tibia plafond angle (KTPA) were measured by scanogram to evaluate coronal alignment of the knee. Tibial anterior surface angle (TAS), talar tilt (TT), tibial plafond inclination (TPI), and ankle joint axis point on the weight-bearing-line (AAWBL) ratio were measured by scanogram to investigate coronal alignment of the ankle. Knee lateral ankle surface angle (KLAS) and tibial lateral surface angle (TLS) were measured by EOS to evaluate sagittal alignment of the ankle.

Results

Varus alignment of the knee was corrected by significant change of the HKA angle (5.8 ± 3.1° vs. − 2.1 ± 2.8°, p < 0.001), MPTA (85.7 ± 2.9° vs. 91.7 ± 3.3°, p < 0.001), and KTPA (5.0 ± 3.5° vs. − 2.1 ± 4.2°, p < 0.001) after HTO. Regarding the ankle coronal alignment, there was significant change in TPI (3.9 ± 3.4° vs. − 0.9 ± 3.8°, p < 0.001) and AAWBL ratio (45.5 ± 14.7% vs. 61.6 ± 13.3%, p < 0.001). In sagittal alignment of the ankle, KLAS (4.5 ± 3.1° vs. 7.7 ± 3.7°, p < 0.001) significantly increased. Among the variables, the amount of correction in AAWBL ratio (R = 0.608, p < 0.01) showed strongest relationship with tibial correction angle.

Conclusion

Based on the present study, coronal and sagittal alignment of ankle joint was significantly affected by HTO. After HTO, AAWBL ratio increased due to lateralization of the ankle joint axis, and KLAS increased due to increased posterior tibial slope.

Level of Evidence

III.

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Title: Coronal and sagittal alignment of ankle joint is significantly affected by high tibial osteotomy
Authors: Byung Hak Oh
Kyung Deok Seo
Youn Moo Heo
Tae Kyun Kim
Jae Kyu Choi
Jae Hwang Song
Publication date: 12-08-2023
Publisher: Springer Berlin Heidelberg
Keywords: Osteoarthrosis
Osteoarthrosis
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 11/2023
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-023-07531-8

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Coronal and sagittal alignment of ankle joint is significantly affected by high tibial osteotomy

Abstract

Purpose

Methods

Results

Conclusion

Level of Evidence

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

Level of Evidence

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