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Causes and Clinical Outcomes of Revision Total Knee Arthroplasty

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À̵¿Çö ( Lee Dong-Hyun ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery

À̽ÂÈÆ ( Lee Seung-Hun ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery
¼ÛÀº±Ô ( Song Eun-Kyoo ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery
¼±Á¾±Ù ( Seon Jong-Keun ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery
ÀÓÈ«¾È ( Lim Hong-An ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery
¾çÈ«¿­ ( Yang Hong-Yeol ) 
Chonnam National University Hwasun Hospital Center for Joint Disease Department of Orthopedic Surgery

Abstract


Purpose: The purpose of this study was to evaluate causes and clinical outcomes of revision total knee arthroplasty (TKA) with a minimum 2-year follow-up.

Materials and Methods: We performed a retrospective review on the records of 225 revision TKAs performed from 2003 to 2012 at a single institution. Finally, 206 cases were conducted. To evaluate clinical outcomes, we checked the range of motion (ROM), Knee Society (KS) score, Hospital for Special Surgery (HSS) score, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score preoperatively, 6 months postoperatively and yearly thereafter and complications after revision TKA.

Results: The causes of revision TKA were septic complications in 120 and aseptic complications in 86. The main aseptic complication was periprosthetic fracture in 36, followed by 25 loosening, 13 polyethylene wear and 9 instability. At the final follow-up, patients showed improvements in ROM and KS, HSS and WOMAC scores. Of the total, 7 patients underwent re-revision due to reinfection in 6 and periprosthetic fracture in 1.

Conclusions: Due to development of implants and surgical techniques, mechanical complications such as aseptic loosening and instability that need a revision decreased whereas septic complications relatively increased. Therefore, we should be cautious for the occurrence of infection. Overall, revision TKA provided clinical improvement in knee function and patient satisfaction.

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Knee; Arthroplasty; Revision; Cause; Outcome

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