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Assessing the Ankle Joint Before and After Total Ankle Arthroplasty

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In orthopedic research, the restoration of the native joint line level in knee arthroplasty is known as an importanct principle, and correlated with positive outcomes. However, the effect of joint line level on patient outcomes after total ankle arthroplasty (TAA) remains unclear, as there is no established method for measuring ankle joint level in TAA. The goal of this study was to develop a reliable radiographic ankle joint line measurement method and to compare ankle joint line level measured pre-TAA, post-TAA, and in non-arthritic ankles. This method was found to have excellent intra- and inter-rater reliabilities. Therefore, it was recommended that surgeons assess contralateral, non-arthritic ankle radiographs when attempting to restore the native ankle joint line level with TAA.

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Harnroongroj T, Hummel A, Ellis SJ, et al. Assessing the Ankle Joint Line Level Before and After Total Ankle Arthroplasty With the “Joint Line Height Ratio”. Foot & Ankle Orthopaedics. 2019;4(4):1-8.

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