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Erschienen in:
10.02.2016 | Original Paper
Patient reported outcomes in three hundred and twenty eight bilateral total knee replacement cases (simultaneous versus staged arthroplasty) using the Oxford Knee Score
Erschienen in: International Orthopaedics | Ausgabe 10/2016
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Purpose
Despite bilateral knee replacement being frequently performed, little data is available to inform on the relative outcomes of each knee for individual patients. The purpose of this study was to compare these outcomes in a series of bilateral total knee replacements (TKRs) performed either simultaneously or at a staged interval.
Methods
We compared outcomes measured by the Oxford Knee Score (OKS; /48) in a series of 656 bilateral TKRs (328 patients). One hundred and fifty-six TKRs were simultaneous and 500 TKRs staged.
Results
Of the staged patients, in 164 (65.6 %) the post-operative OKS in their second TKR matched the first, it was worse in 57 (22.8 %) and better in 29 (11.6 %). The trend was towards a worse OKS in the second staged TKR (p = 0.003). Mean improvement was similar in simultaneous cases to the first staged TKR (24.3 vs. 24.0; p = 0.883) but significantly less in second staged TKRs (20.2; p < 0.001) due to higher pre-operative scores.
Conclusions
Individual patients attained a comparable post-operative score in both their knees, independent of age, pre-operative function and the duration of any staging interval.