Clinical Results of Posterior Cruciate LigamentÂ–Retaining Total Knee Arthroplasty in Patients with Rheumatoid Arthritis: A 5- to 13-Year Follow-up Study
Rie Kurose*, Hiroshi Kakizaki and Hiroyuki Akimoto
Department of Orthopedic Surgery, Hirosaki National Hospital, Hirosaki, Japan
- *Corresponding Author:
- Rie Kurose
Department of Orthopedic Surgery
Hirosaki National Hospital, 1 Tomino-cho
Hirosaki City, Aomori 036-8545, Japan
E-mail: [email protected]
Received Date: July 28, 2014, Accepted Date: August 30, 2014, Published Date: September 09, 2014
Citation: Kurose R, Kakizaki H, Akimoto H (2014) Clinical Results of Posterior Cruciate Ligament–Retaining Total Knee Arthroplasty in Patients with Rheumatoid Arthritis: A 5- to 13-Year Follow-up Study. Orthopedic Muscul Syst 3: 166. doi: 10.4172/2161-0533.1000166
Copyright: © 2014, Kurose R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Aim: Total knee arthroplasty (TKA) is commonly performed to relieve pain and improve function in patients with rheumatoid arthritis (RA). However, treatment with posterior cruciate ligament–retaining (CR-type) TKA is thought to be controversial, particularly in patients with RA. In the present study, we aimed to investigate the clinical results of CR-type TKA and evaluate the efficacy of this type of prosthesis in patients with RA.
Methods: In our hospital, 77 CR-type TKA procedures were performed in 59 patients with RA between January 2001 and 2008. In total, we assessed 45 CR-type TKA procedures in 30 patients with RA who underwent follow-up for at least 5 years. The assessment was based on the Knee Society clinical score (KSS) and an independent radiographic analysis.
Results: During a mean follow-up period of 8 years, 2 patients developed late infection and 2 other patients experienced supracondylar fracture after each TKA procedure. After surgery, the KSS improved significantly among the patients and 87% of the patients did not experience any pain. Moreover, the mean postoperative maximum flexion angle was 114.8°, whereas the maximum extension angle was -4.2°.
Conclusion: Although additional long-term follow-up studies are required, the results of our medium-term followup study indicate that CR-type TKA was not problematic, even in patients with RA.