Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls
© The Author(s) 2019. Background: Bone quality in the distal tibia and talus is an important factor contributing to initial component stability in total ankle replacement (TAR). However, the effect of ankle arthritis on bone density in the tibia and talus remains unclear. The objective of this study...
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th-mahidol.512692020-01-27T16:18:45Z Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls Thos Harnroongroj Lauren G. Volpert Scott J. Ellis Carolyn M. Sofka Jonathan T. Deland Constantine A. Demetracopoulos Hospital for Special Surgery - New York Faculty of Medicine, Siriraj Hospital, Mahidol University Medicine © The Author(s) 2019. Background: Bone quality in the distal tibia and talus is an important factor contributing to initial component stability in total ankle replacement (TAR). However, the effect of ankle arthritis on bone density in the tibia and talus remains unclear. The objective of this study was to compare bone density of tibia and talus in arthritic and nonarthritic ankles as a function of distance from ankle joint. Methods: We retrospectively reviewed 93 end-stage ankle arthritis patients who had preoperative nonweightbearing ankle computed tomography (CT) and identified a cohort of 83 nonarthritic ankle patients as a demographic-matched control group. A region of interest tool was used to calculate Hounsfield unit (HU) values in the cancellous region of the tibia and talus. Measurements were obtained on axial cut CTs from 6 to 12 mm above the tibial plafond, and 1 to 4 mm below the talar dome. HU measurements between groups and the decrease of HU at the relative level in each group were compared. Results: Arthritic ankles demonstrated significantly greater mean bone density than nonarthritic ankles at between 6 and 10 mm above the joint in the tibia (P <.05). No significant difference in bone density between 10 and 12 mm from the joint in the tibia nor at any level of the talus was found between groups. In both groups, bone density decreased significantly at each successive level away from the ankle joint. Conclusion: Ankle arthritis patients demonstrated greater or equal bone density in both the tibia and talus compared to demographic-matched controls. In both groups, bone density decreased with increasing distance away from the articular surface. In TAR, tibial bone resection between 6 and 8 mm may provide improved initial implant stability. Level of Evidence: Level III, comparative study. 2020-01-27T09:18:45Z 2020-01-27T09:18:45Z 2019-12-01 Article Foot and Ankle International. Vol.40, No.12 (2019), 1408-1415 10.1177/1071100719868496 19447876 10711007 2-s2.0-85071501429 https://repository.li.mahidol.ac.th/handle/123456789/51269 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85071501429&origin=inward |
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Medicine Thos Harnroongroj Lauren G. Volpert Scott J. Ellis Carolyn M. Sofka Jonathan T. Deland Constantine A. Demetracopoulos Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
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© The Author(s) 2019. Background: Bone quality in the distal tibia and talus is an important factor contributing to initial component stability in total ankle replacement (TAR). However, the effect of ankle arthritis on bone density in the tibia and talus remains unclear. The objective of this study was to compare bone density of tibia and talus in arthritic and nonarthritic ankles as a function of distance from ankle joint. Methods: We retrospectively reviewed 93 end-stage ankle arthritis patients who had preoperative nonweightbearing ankle computed tomography (CT) and identified a cohort of 83 nonarthritic ankle patients as a demographic-matched control group. A region of interest tool was used to calculate Hounsfield unit (HU) values in the cancellous region of the tibia and talus. Measurements were obtained on axial cut CTs from 6 to 12 mm above the tibial plafond, and 1 to 4 mm below the talar dome. HU measurements between groups and the decrease of HU at the relative level in each group were compared. Results: Arthritic ankles demonstrated significantly greater mean bone density than nonarthritic ankles at between 6 and 10 mm above the joint in the tibia (P <.05). No significant difference in bone density between 10 and 12 mm from the joint in the tibia nor at any level of the talus was found between groups. In both groups, bone density decreased significantly at each successive level away from the ankle joint. Conclusion: Ankle arthritis patients demonstrated greater or equal bone density in both the tibia and talus compared to demographic-matched controls. In both groups, bone density decreased with increasing distance away from the articular surface. In TAR, tibial bone resection between 6 and 8 mm may provide improved initial implant stability. Level of Evidence: Level III, comparative study. |
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Hospital for Special Surgery - New York |
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Hospital for Special Surgery - New York Thos Harnroongroj Lauren G. Volpert Scott J. Ellis Carolyn M. Sofka Jonathan T. Deland Constantine A. Demetracopoulos |
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Article |
author |
Thos Harnroongroj Lauren G. Volpert Scott J. Ellis Carolyn M. Sofka Jonathan T. Deland Constantine A. Demetracopoulos |
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Thos Harnroongroj |
title |
Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
title_short |
Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
title_full |
Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
title_fullStr |
Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
title_full_unstemmed |
Comparison of Tibial and Talar Bone Density in Patients Undergoing Total Ankle Replacement vs Non–Ankle Arthritis Matched Controls |
title_sort |
comparison of tibial and talar bone density in patients undergoing total ankle replacement vs non–ankle arthritis matched controls |
publishDate |
2020 |
url |
https://repository.li.mahidol.ac.th/handle/123456789/51269 |
_version_ |
1763489801515827200 |