Modern rheumatology · 2026
Long-term outcomes of total knee arthroplasty without patellar resurfacing for rheumatoid arthritis.
СтатьяНазвание и аннотация: Перевод в очереди
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Nojiri Sho, Hayakawa Kazue, Kaneko Yosuke, Shibata Kohei, Fujita Nobuyuki
Аннотация
OBJECTIVES: Whether to resurface the patella in total knee arthroplasty for patients with rheumatoid arthritis remains controversial. This study evaluated long-term clinical and radiographic outcomes after total knee arthroplasty without patellar resurfacing.
METHODS: Of 100 knees in 74 patients who underwent total knee arthroplasty without patellar resurfacing, 64 knees in 49 patients were available for follow-up (mean, 13.6 years). Clinical evaluations included the presence of anterior knee pain (AKP) at final follow-up, Knee Society Score, Knee Society Functional Score, and Kujala score. Plain radiographic evaluations assessed patellar thinning and its relationship with clinical outcomes. We also compared outcomes between remission and non-remission groups based on Disease Activity Score in 28 joints using C-reactive protein at final follow-up.
RESULTS: The incidence of AKP was 9.3%. At follow-up, Knee Society Scores and Functional Scores had improved significantly (P < .05). Although patellar thinning progressed, it did not appear to affect clinical outcomes or incidence of AKP. Disease activity did not differ significantly between groups or by presence of AKP.
CONCLUSIONS: Long-term outcomes of total knee arthroplasty without patellar resurfacing in rheumatoid arthritis were favourable, indicating that this approach is acceptable.
METHODS: Of 100 knees in 74 patients who underwent total knee arthroplasty without patellar resurfacing, 64 knees in 49 patients were available for follow-up (mean, 13.6 years). Clinical evaluations included the presence of anterior knee pain (AKP) at final follow-up, Knee Society Score, Knee Society Functional Score, and Kujala score. Plain radiographic evaluations assessed patellar thinning and its relationship with clinical outcomes. We also compared outcomes between remission and non-remission groups based on Disease Activity Score in 28 joints using C-reactive protein at final follow-up.
RESULTS: The incidence of AKP was 9.3%. At follow-up, Knee Society Scores and Functional Scores had improved significantly (P < .05). Although patellar thinning progressed, it did not appear to affect clinical outcomes or incidence of AKP. Disease activity did not differ significantly between groups or by presence of AKP.
CONCLUSIONS: Long-term outcomes of total knee arthroplasty without patellar resurfacing in rheumatoid arthritis were favourable, indicating that this approach is acceptable.