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Correlation of maximum flexion with clinical outcome after total knee replacement in Asian patients

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Authors
Park, K. K.; Chang, C. B.; Kang, Y. G.; Seong, S. C.; Kim, T. K.
Issue Date
2007
Publisher
British Editorial Society of Bone and Joint Surgery
Citation
J Bone Joint Surg [Br] 2007;89:604-8
Keywords
Arthroplasty, Replacement, Knee/*rehabilitationKnee Joint/*physiopathologyPain MeasurementPrognosisQuality of Life*Range of Motion, ArticularSeverity of Illness Index
Abstract
This study aimed to determine the correlation between the amount of maximum flexion and the clinical outcome in 207 Koreans (333 knees) undergoing total knee replacement. The association of maximum flexion with clinical outcome was evaluated one year postoperatively using three scoring systems; the American Knee Society score, Western Ontario McMaster Universities Osteoarthritis index and the Short Form-36. The mean maximum flexion decreased post-operatively at 12 months from 140.1 degrees (60 degrees to 160 degrees ) to 133.0 degrees (105 degrees to 150 degrees ). Only the social function score of the Short Form-36 correlated significantly with maximum flexion (correlation coefficient = 0.180, p = 0.039). In comparative analyses of subgroups divided by a maximum flexion of 120 degrees , we found no significant differences in any parameters except the social function score of the Short Form-36 (41.9 vs 47.3, p = 0.031). Knees with a maximum flexion of more than 135 degrees had a better functional Western Ontario McMasters Universities Osteoarthritis index score than knees with maximum flexion of 135 degrees or less (17.5 vs 14.3, p = 0.031). We found only weak correlation between the postoperative maximum flexion and the clinical parameters for pain relief, function and quality of life, even in Korean patients. Efforts to increase post-operative maximum flexion should be exercised with caution until concerns relating to high-flexion activities are sufficiently resolved.
ISSN
0301-620X (Print)
Language
English
URI
http://www.jbjs.org.uk/cgi/content/abstract/89-B/5/604

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=17540744

http://hdl.handle.net/10371/11154
DOI
https://doi.org/10.1302/0301-620X.89B5.18117
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College of Medicine/School of Medicine (의과대학/대학원)Orthopedic Surgery (정형외과학전공)Journal Papers (저널논문_정형외과학전공)
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