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The relationship of the medially-offset stem of the tibial component to the medial tibial cortex in total knee replacements in Korean patients

Cited 15 time in Web of Science Cited 16 time in Scopus
Authors
Yoo, J H; Kang, Y G; Chang, C B; Seong, S C; Kim, T K
Issue Date
2007-12-28
Publisher
British Editorial Society of Bone and Joint Surgery
Citation
J Bone Joint Surg [Br] 2008;90(1):31-6
Keywords
Arthroplasty, Replacement, Knee/*methodsAsian Continental Ancestry GroupFemaleHumansKnee Joint/radiography/*surgery*Knee ProsthesisMaleMiddle AgedOsteoarthritis, Knee/radiography/*surgery*Prosthesis DesignTibia/*radiography
Abstract
We examined the placement of the stem in relation to the medial tibial cortex when using total knee replacements (TKRs) with medially-offset tibial stems in Korean patients. Measurements were performed on the pre- and post-operative radiographs of 246 osteoarthritic knees replaced between January 2005 and May 2006 using the Genesis II or E-motion TKR with a medially-offset stem. Pre-operatively, we measured the distance between the mechanical axis and that of the tibial shaft and post-operatively, that between the midline of the tibial stem and the axis of the shaft. Knees were identified in which there was radiological contact between the tip of the stem and the medial tibial cortex. The mechanical axis was located medial to the axis of the shaft in 203 knees (82.5%). Post-operatively, the midline of the tibial stem was located medial to the tibial shaft axis in 196 knees (79.7%). In 16 knees (6.5%) there was radiological contact between the tibial stem or cement mantle and the medial tibial cortex. Our study has shown that the medially-offset stem in the tibial component may not be a good option for knees undergoing replacement for advanced osteoarthritis in some Korean patients.
ISSN
0301-620X (Print)
Language
English
URI
http://www.jbjs.org.uk/cgi/reprint/90-B/1/31.pdf

https://hdl.handle.net/10371/67493
DOI
https://doi.org/10.1302/0301-620X.90B1.19605
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College of Medicine/School of Medicine (의과대학/대학원)Orthopedic Surgery (정형외과학전공)Journal Papers (저널논문_정형외과학전공)
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