J Korean Orthop Assoc JKOA Journal of the Korean Orthopaedic Association 1226-2102 2005-8918 The Korean Orthopaedic Association 10.4055/jkoa.2015.50.1.1 Original Article Complication Rate and Clinical Result of One-Week Interval Staged Bilateral Total Knee Arthroplasty: Compared to Simultaneous and Several-Months Interval Staged Bilateral Total Knee Arthroplasty Park Sin Hyung M.D. Yim Soo Jae M.D. Department of Orthopedic Surgery, Soonchunhyang University Hospital Bucheon, Soonchunhyang University College of Medicine, Bucheon, Korea. Correspondence to: Soo Jae Yim, M.D. Department of Orthopedic Surgery, Soonchunhyang University Hospital Bucheon, 170 Jomaru-ro, Wonmi-gu, Bucheon 420-767, Korea. TEL: +82-32-621-5260, FAX: +82-32-621-5018, yimsj@chol.com 02 2015 28 02 2015 50 1 1 7 20 08 2014 03 11 2014 04 11 2014 Copyright © 2015 by The Korean Orthopaedic Association 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Purpose

The purpose of this study is to compare the clinical results and the rates of complication among three groups that received the simultaneous total knee replacement (TKR), one-week interval staged bilateral TKR, or several-months interval staged TKR.

 Materials and Methods

We conducted a retrospective study of patients who had been diagnosed with bilateral degenerative osteoarthritis undergoing bilateral TKR from 2004 May to 2012 March. We divided patients into three groups which received simultaneous TKR (Group A, n=84), one-week interval staged bilateral TKR (Group B, n=124), or several-months interval staged TKR (Group C, n=65). Hospital for special surgery (HSS) score and the rate of complication were evaluated and compared.

 Results

Mean postoperative HSS score showed significant improvement in the three groups. No difference in postoperative HSS was observed among the three groups (p=0.325). The complication rate in Group A was lower than that in Group B (p=0.049) and that in Group A was similar to that in Group C (p=0.786).

 Conclusion

Group A had a better result than Group B and was similar to Group C in complication rate. One-week interval staged TKR can be good choice in patients with bilateral degenerative osteoarthritis.

 bilateral degenerative osteoarthritis staged total knee replacement postoperative complications clinical result

The authors have nothing to disclose.

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Values are presented as mean±standard deviation, number only, or number (%). Group A: the one-week interval staged total knee replacement (TKR), Group B: the simultaneous TKR, Group C: the several-months interval staged TKR.

 Comparison of Clinical Results

Values are presented as mean±standard deviation. HSS, hospital for special surgery scoring system. Group A: the one-week interval staged total knee replacement (TKR), Group B: the simultaneous TKR, Group C: the several-months interval staged TKR.

 Comparison of Complications

Values are presented as number (%). Group A: the one-week interval staged total knee replacement (TKR), Group B: the simultaneous TKR, Group C: the several-months interval staged TKR.

 Comparison of Complications between Group A and B/Group B and C

Values are presented as number (%). Group A: the one-week interval staged total knee replacement (TKR), Group B: the simultaneous TKR, Group C: the several-months interval staged TKR.

 Comparison of Complications Based on Grade

Values are presented as number (%). Group A: the one-week interval staged total knee replacement (TKR), Group B: the simultaneous TKR, Group C: the several-months interval staged TKR.