ArticleJournal of orthopaedic surgery and research2026
Comparative outcomes of robot-assisted versus conventional TKA in rheumatoid arthritis patients.
Article in Journal of orthopaedic surgery and research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo evaluate the surgical outcomes of RA-TKA compared to C-TKA in patients with rheumatoid arthritis.
methodsA retrospective study was conducted at the PLA General Hospital, enrolling 239 rheumatoid arthritis patients who underwent either robot-assisted TKA or conventional TKA, with 102 and 187 patients in the RA-TKA and C-TKA groups, respectively. All patients were followed up 2 years. Follow-up indicators included KSS and WOMAC scores, single-leg standing time(SLST), and knee joint range of motion. The patients were evaluated at 2 weeks, 3 months, 6 months, 1year and 2 years postoperatively. All data were prospectively collected.
resultsAt 2 weeks postoperatively, the RA-TKA group showed superior KSS symptom scores (9.23 ± 3.38 vs. 10.79 ± 2.67 p = 0.001) compared to the C-TKA group. Additionally, at 2 weeks, the RA-TKA group had better WOMAC total scores (30.85 ± 9.92 vs. 34.61± 13.47 p = 0.01), pain (6.06 ± 2.55 vs. 6.81 ± 2.83 p = 0.027), stiffness (2.62 ± 1.15 vs. 2.90 ± 0.99 p = 0.037), and Physical function (22.17 ± 8.11 vs. 24.90 ± 12.34 p = 0.032). At 3 months postoperatively, the RA-TKA group outperformed the C-TKA group in WOMAC total scores (13.3 ± 7.43 vs. 17.56 ± 9.34 p= 0.000), Physical function (7.41 ± 5.69 vs. 12.1± 7.56 p= 0.000), and knee range of motion (109.68 ± 10.15 vs. 105.63 ± 9.59 p = 0.005). At 6 months postoperatively, the RA-TKA group had higher satisfaction scores (31.54 ± 5.34 vs. 28.56 ± 5.36 p = 0.000). There were no significant differences in postoperative complications between the two groups.
conclusionsRA-TKA can achieve better early outcomes in patients with rheumatoid arthritis, facilitating early rehabilitation. This provides important evidence for selecting surgical methods in rheumatoid osteoarthritis.
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