Inferior outcomes of primary total knee arthroplasty in patients with rheumatoid arthritis compared to patients with osteoarthritis

Purpose The purpose of this study was to compare the functional outcomes, activity levels, mortalities, implant survival rates, and complications of total knee arthroplasty (TKA) in patients with rheumatoid arthritis (RA) with those in patients with osteoarthritis (OA) over a minimum 10-year follow-...

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2022-08, Vol.30 (8), p.2786-2792
Main Authors: Baek, Ji-Hoon, Lee, Su Chan, Kim, Jin-Woo, Ahn, Hye Sun, Nam, Chang Hyun
Format: Article
Language:English
Subjects:
Arthritis
Arthroplasty (knee)
Biomedical materials
Complications
Joint replacement surgery
Knee
Medicine
Medicine & Public Health
Mortality
Orthopaedic implants
Orthopedics
Osteoarthritis
Rheumatoid arthritis
Sports Medicine
Survival
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Summary:Purpose The purpose of this study was to compare the functional outcomes, activity levels, mortalities, implant survival rates, and complications of total knee arthroplasty (TKA) in patients with rheumatoid arthritis (RA) with those in patients with osteoarthritis (OA) over a minimum 10-year follow-up period. Methods Between January 2007 and December 2009, 90 TKAs performed in 57 patients with RA (RA group) were retrospectively reviewed and matched with a control group of 180 TKAs performed in 114 patients with OA. The functional outcomes (Knee Society Score), activity levels (Koval grade), mortalities, implant survival rates, and complications were compared between the two groups with a minimum 10-year follow-up period. The mean follow-up periods were 12.3 years in the RA group and 12.6 years in the OA group. Results The mean Knee Society knee scores in the RA and OA groups improved from 37.7 ± 5.4 to 38.2 ± 5.3 preoperatively to 72.9 ± 22.8 to 83.1 ± 11.0 points, respectively, at the final follow-up ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-021-06675-9