Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis
Category: Hindfoot; Ankle; Ankle Arthritis Introduction/Purpose: We do not yet fully understand how the subtalar joint position is related to the varus osteoarthritic ankle joint. The purposes of this study were 1) to investigate the coronal orientation of the calcaneus relative to the talus accordi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2022-11-01
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| Series: | Foot & Ankle Orthopaedics |
| Online Access: | https://doi.org/10.1177/2473011421S00716 |
| _version_ | 1797988763439202304 |
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| author | Ho Won Kang Gil Young Park Dong-Oh Lee MD Yoon A. Ro Dong Yeon Lee MD, PhD |
| author_facet | Ho Won Kang Gil Young Park Dong-Oh Lee MD Yoon A. Ro Dong Yeon Lee MD, PhD |
| author_sort | Ho Won Kang |
| collection | DOAJ |
| description | Category: Hindfoot; Ankle; Ankle Arthritis Introduction/Purpose: We do not yet fully understand how the subtalar joint position is related to the varus osteoarthritic ankle joint. The purposes of this study were 1) to investigate the coronal orientation of the calcaneus relative to the talus according to the ankle osteoarthritis stage, talar tilt (TT), and 2) to determine if there is a TT threshold at which apparent subtalar compensation begins to fade. Methods: We retrospectively reviewed 132 ankles that underwent WBCT for varus ankle osteoarthritis. The TT, subtalar inclination angle (SIA), and calcaneal inclination angle (CIA) were measured using WBCT. Ankles were divided into 5 groups according to Takakura stage and 2 groups according to the apparent compensation status of the subtalar joint and compared the index of the inclination of the subtalar joint relative to the ankle (SIA) or the index of the inclination of the calcaneus relative to the ankle (CIA). Additionally, we explored the relationship between SIA or CIA and the TT. Results: Apparent subtalar compensation (SIA and CIA) was significantly lower in Takakura stages 3b and 4. The SIA and CIA significantly differed according to the apparent compensation status (p<.001 and p=.030, respectively). The CIA of the noncompensated group varied widely, while the SIA was relatively constant. Furthermore, TT was greater than 9.5, which indicated a high probability of a noncompensated heel. (sensitivity, 92.6%; specificity, 89.7%). Conclusion: The position of the calcaneus has a appears compensatory with coronal plane orientation in varus ankle osteoarthritis when the TT is < than 9.5°. |
| first_indexed | 2024-04-11T08:09:08Z |
| format | Article |
| id | doaj.art-5614224a8d4c457292aba7b1f8ac3c38 |
| institution | Directory Open Access Journal |
| issn | 2473-0114 |
| language | English |
| last_indexed | 2024-04-11T08:09:08Z |
| publishDate | 2022-11-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Foot & Ankle Orthopaedics |
| spelling | doaj.art-5614224a8d4c457292aba7b1f8ac3c382022-12-22T04:35:26ZengSAGE PublishingFoot & Ankle Orthopaedics2473-01142022-11-01710.1177/2473011421S00716Coronal Plane Calcaneal-Talar Orientation in Varus Ankle OsteoarthritisHo Won KangGil Young ParkDong-Oh Lee MDYoon A. RoDong Yeon Lee MD, PhDCategory: Hindfoot; Ankle; Ankle Arthritis Introduction/Purpose: We do not yet fully understand how the subtalar joint position is related to the varus osteoarthritic ankle joint. The purposes of this study were 1) to investigate the coronal orientation of the calcaneus relative to the talus according to the ankle osteoarthritis stage, talar tilt (TT), and 2) to determine if there is a TT threshold at which apparent subtalar compensation begins to fade. Methods: We retrospectively reviewed 132 ankles that underwent WBCT for varus ankle osteoarthritis. The TT, subtalar inclination angle (SIA), and calcaneal inclination angle (CIA) were measured using WBCT. Ankles were divided into 5 groups according to Takakura stage and 2 groups according to the apparent compensation status of the subtalar joint and compared the index of the inclination of the subtalar joint relative to the ankle (SIA) or the index of the inclination of the calcaneus relative to the ankle (CIA). Additionally, we explored the relationship between SIA or CIA and the TT. Results: Apparent subtalar compensation (SIA and CIA) was significantly lower in Takakura stages 3b and 4. The SIA and CIA significantly differed according to the apparent compensation status (p<.001 and p=.030, respectively). The CIA of the noncompensated group varied widely, while the SIA was relatively constant. Furthermore, TT was greater than 9.5, which indicated a high probability of a noncompensated heel. (sensitivity, 92.6%; specificity, 89.7%). Conclusion: The position of the calcaneus has a appears compensatory with coronal plane orientation in varus ankle osteoarthritis when the TT is < than 9.5°.https://doi.org/10.1177/2473011421S00716 |
| spellingShingle | Ho Won Kang Gil Young Park Dong-Oh Lee MD Yoon A. Ro Dong Yeon Lee MD, PhD Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis Foot & Ankle Orthopaedics |
| title | Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis |
| title_full | Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis |
| title_fullStr | Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis |
| title_full_unstemmed | Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis |
| title_short | Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis |
| title_sort | coronal plane calcaneal talar orientation in varus ankle osteoarthritis |
| url | https://doi.org/10.1177/2473011421S00716 |
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