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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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The Relationship Between Polyethylene Insert Size and Complications in Total Ankle Replacement
James M Cottom1,2, Steven M Douthett1,2, Kelly K McConnell1,2
1Florida Orthopedic Foot and Ankle Center, Sarasota, Florida (JMC, SMD, KKM).
Foot & Ankle Specialist
|July 28, 2018
Summary
Total ankle replacement complication rates are similar between smaller and larger polyethylene inserts. This study found no significant difference in complications based on insert size, suggesting both are viable options.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Total ankle replacement (TAR) is a surgical procedure to restore function in arthritic ankles.
- Polyethylene insert size is a critical component in TAR, influencing biomechanics and outcomes.
Purpose of the Study:
- To compare complication rates following total ankle replacement based on polyethylene insert size.
- To determine if smaller (<10 mm) versus larger (≥10 mm) polyethylene inserts impact post-operative complications.
Main Methods:
- Retrospective comparative study of 100 patients undergoing primary total ankle arthroplasty.
- Patients divided into two groups based on polyethylene insert size: <10 mm (Group 1) and ≥10 mm (Group 2).
- Data collected included demographics, insert size, concomitant procedures, complications, and patient-reported outcomes.
Main Results:
- Group 1 (smaller inserts) had a complication rate of 11.1% (7/63).
- Group 2 (larger inserts) had a complication rate of 16.2% (6/32).
- No statistically significant difference in complication rates was observed between the two groups (P = 0.5427).
Conclusions:
- Total ankle replacement complication rates are comparable regardless of polyethylene insert size.
- Both small and large polyethylene inserts, used for primary resurfacing or deformity correction, demonstrate similar safety profiles.
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