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Revision for coronal malalignment will improve functional outcome up to 5 years postoperatively
S N van Laarhoven1, P J C Heesterbeek2, S Teerenstra3
1Department of Orthopaedics, Sint Maartenskliniek, P.O. Box 9011, 6500 GM, Nijmegen, The Netherlands. s.vanlaarhoven@maartenskliniek.nl.
Revision total knee arthroplasty (TKA) for malalignment significantly improves function for 5 years. Greater coronal deviation, younger age, and lower preoperative scores predict better outcomes in revision TKA surgery.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Reconstructive Surgery
Background:
- Revision total knee arthroplasty (TKA) for malalignment is a common procedure.
- Functional outcomes after revision TKA for malalignment are not well understood.
Purpose of the Study:
- To assess the functional outcome of revision TKA for malalignment at 5 years.
- To identify factors influencing functional outcome in these patients.
Main Methods:
- Prospective cohort study of 105 patients undergoing revision TKA for malalignment.
- Functional outcome assessed using the Knee Society Clinical Rating System (fKSS) at multiple time points.
- Multivariable analysis used to identify influencing factors.
Main Results:
- Functional outcome significantly improved from preoperative to 5-year follow-up (p < 0.001).
- Higher coronal deviation, younger age, and lower preoperative fKSS were associated with greater functional improvement.
Conclusions:
- Revision TKA for malalignment is effective in improving functional outcomes up to 5 years.
- Predictors of improved function include greater coronal deviation, younger age, and lower preoperative scores.
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