Background/Aim. Total knee arthroplasty in patients with rheumatoid arthritis is an effective method of eliminating pain and improving functional status, but it is associated with a number of unique challenges. The aim of this study was to evaluate the clinical and radiographic outcomes of total knee arthroplasty, as well as patient satisfaction, in this series of patients with rheumatoid arthritis. Methods. Between January 2001 and 2012, 108 total knee arthroplasties in 78 patients with

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... oid arthritis were performed, utilizing a posteriorstabilized prostheses. The average age of the patients was 58 ± 12.4 years, and 88% were females. Median follow-up of patients was 80 months with interquartile range of 34 months (min-max: 36-132 months). Results. Average Knee Society score improved from preoperative 18 ± 11.4 to postoperative 83 ± 3.5, and Functional Knee Society score from 21 ± 9.9 to 50 ± 5.9. Western Ontario and McMaster Universities Arthritis (WOMAC) knee injury and osteopaedic outcome scores improved from 23 ± 6.4 to 69 ± 4.6 postoperatively. In 25 (23.14%) knees radiolucent lines of less than 2 mm were found and they were not progressive. Survival rate excluding deep infection was 99.1%. Conclusion. Total knee arthroplasty is an effective procedure of treatment of damaged knee joint in patients with rheumatoid arthritis. Apstrakt Uvod/Cilj. Totalna artroplastika kolena kod bolesnika sa reumatoidnim artritisom je uspešna metoda u otklanjanju bola i poboljšanja funkcionalnog statusa, ali je povezana sa nekoliko jedinstvenih izazova. Cilj ove studije bio je procena kliničkih i radiografskih rezultata totalne artroplastike kolena, kao i zadovoljstvo bolesnika, kod ove serije ispitanika sa reumatoidnim artritisom. Metode. U periodu od januara 2001 g. do 2012 g. uradjeno je 108 totalnih artroplastika kolena kod 78 bolesnika sa reumatoidnim artritisom, korišćenjem endoproteze sa zadnjom stabilizacijom. Prosečna starost bolesnika iznosila je 58 ± 12, 4 godine, a 88% su bile osobe ženskog pola. Medijana vremena praćenja bolesnika bila je 80 meseci sa interkvartilnim opsegom od 34 meseca (min-max: 36-132 meseca). Rezultati. Prosečan Knee Society score (KSS) je bio poboljšan sa preoperativnih 18 ± 11,4 na postoperativnih 83 ± 3, 5, a Functional Knee Society score (FKSS) sa 21 ± 9, 9 na 50 ± 5, 9. Western Ontario and McMaster Universities Arthritis (WOMAC) skor bio je poboljšan sa 23 ± 6, 4 na 69 ± 4, 6 postoperativno. Kod 25 (23, 14%) kolena konstatovane su radiolucentne linije manje od 2 mm koje nisu bile progresivne. Stepen preživljavanja isključujući duboku infekciju je bio 99,1% u prosečnom vremenskom praćenju od 80 meseci. Zaključak. Totalna artroplastika je efikasna procedura lečenja oštećenog zgloba kolena kod bolesnika sa reumatoidnim artritisom.