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Comparative Study
Journal Article
Sagittal Ankle and Midfoot Range of Motion Before and After Revision Total Ankle Replacement: A Retrospective Comparative Analysis.
Journal of Foot and Ankle Surgery 2018 May
The most common reason for a revision total ankle replacement procedure is a painful, stiff ankle even after the initial surgery. Limited and conflicting data are available regarding the change in sagittal foot and ankle range of motion after revision total ankle replacement surgery. We sought to determine whether revision total ankle replacements would reduce compensatory midfoot range of motion. In determining this, a novel radiographic measurement system with stable osseous landmarks is used. A retrospective medical record review of patients who had undergone revision total ankle replacement from January 2009 to June 2016 was performed. Thirty-three patients (33 ankles) underwent revision total ankle replacement surgery and met the inclusion criteria with a mean follow-up period of 28.39 ± 14.68 (range 2 to 59) months. Investigation of preoperative and postoperative weightbearing lateral radiographic images was performed to determine the global foot and ankle, isolated ankle, and isolated midfoot sagittal ranges of motion. Statistical analysis revealed a significant increase in ankle range of motion (p = .046) and a significant decrease in midfoot range of motion (p < .001) from preoperatively to postoperatively. The change in global foot and ankle range of motion was not significant (p = .53). For this patient population, the increased ankle range of motion effectively resulted in less compensatory midfoot range of motion.
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