ABSTRACT
Total ankle replacement (TAR) is an established technique for the treatment of end-stage
ankle arthritis. The aims of TAR include pain relief, preservation of tibiotalar movement,
protection of adjacent joints, and restoration of anatomic alignment in the coronal
and sagittal planes. The aims of this study were to determine the relative importance
of pre- and post-TAR coronal and sagittal balance on postoperative patient-reported
outcome measures (PROMs). A total of 101 ankles in 99 patients were included in this
retrospective cohort study. Patients were scored preoperatively and at a minimum of
2 years by using the Foot and Ankle Outcome Score (FAOS), the American Orthopedic
Foot and Ankle Society (AOFAS) hindfoot-ankle score, the Short Form-36 measures, and
a set of radiographic measurements to define the sagittal and coronal alignment. There
was no significant difference between the groups regarding the anterior or posterior
translation of the talus preoperatively. There were no statistically significant correlations
between any preoperative measure and any domain of the PROM data. Significant correlations
were observed between postoperative medial distal tibial angle and the function domain
of the FAOS and the AOFAS hindfoot-ankle score. Preoperative coronal and sagittal
plane deformity are not markedly different, depending on the diagnosis. Preoperative
deformity does not appear to correlate significantly with postoperative function,
as measured by the PROM scores. Postoperative sagittal plane alignment does not correlate
significantly with postoperative function, as measured by PROMs. Coronal plane alignment,
as measured by the medial distal tibial angle, may be associated with postoperative
function, as measured on the AOFAS hindfoot-ankle and FAOS function subscales.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: April 06, 2019
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
Copyright
© 2018 by the American College of Foot and Ankle Surgeons. All rights reserved.
