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Article: Axial alignment of the lower extremity in Chinese adults

TitleAxial alignment of the lower extremity in Chinese adults
Authors
Issue Date2000
PublisherJournal of Bone and Joint Surgery. The Journal's web site is located at http://www.jbjs.org
Citation
Journal Of Bone And Joint Surgery - Series A, 2000, v. 82 n. 11, p. 1603-1608 How to Cite?
AbstractBackground: The restoration of normal axial alignment of the lower extremity is important to surgeons who perform reconstructive surgery of the knee. However, data on the normal alignment of the lower extremity in Chinese adults are not available. Methods: The axial alignment of the lower extremity in twenty-five adult male and twenty-five adult female volunteers of southern Chinese origin was measured on weight-bearing radiographs of the entire lower limb. The mean age was twenty-four years for the male volunteers and twenty-three years for the female volunteers. The results were compared with those of two similar studies of white volunteers in the United States. Results: The medial inclination of the tibial plateau in the Chinese subjects (mean and standard deviation, 5.4 ± 2.5 degrees for women and 4.9 ± 2.3 degrees for men) was greater than the commonly reported 3 degrees. The extremities of the Chinese women were found to have a mean of 2.2 ± 2.5 degrees of varus alignment, and those of the Chinese men had a mean of 2.2 ± 2.7 degrees of varus alignment. Conclusions: Compared with the white subjects described in the studies by Moreland et al. and Hsu et al., the Chinese subjects had significantly larger medial inclination of the knee joint (knee-joint obliquity) (p < 0.005) and the female Chinese subjects had significantly more varus alignment of the lower extremity (p < 0.025). Clinical Relevance: Five degrees of external rotation of the femoral component, instead of the commonly reported 3 degrees, may be required to obtain a rectangular flexion gap in total knee arthroplasty in Chinese patients. The racial difference in the knee-joint obliquity may contribute to the racial difference in the ratio of knee osteoarthritis to hip osteoarthritis. Additional studies are necessary to confirm this relationship.
Persistent Identifierhttp://hdl.handle.net/10722/79696
ISSN
2015 Impact Factor: 5.163
2015 SCImago Journal Rankings: 2.938
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTang, WMen_HK
dc.contributor.authorZhu, YHen_HK
dc.contributor.authorChiu, KYen_HK
dc.date.accessioned2010-09-06T07:57:33Z-
dc.date.available2010-09-06T07:57:33Z-
dc.date.issued2000en_HK
dc.identifier.citationJournal Of Bone And Joint Surgery - Series A, 2000, v. 82 n. 11, p. 1603-1608en_HK
dc.identifier.issn0021-9355en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79696-
dc.description.abstractBackground: The restoration of normal axial alignment of the lower extremity is important to surgeons who perform reconstructive surgery of the knee. However, data on the normal alignment of the lower extremity in Chinese adults are not available. Methods: The axial alignment of the lower extremity in twenty-five adult male and twenty-five adult female volunteers of southern Chinese origin was measured on weight-bearing radiographs of the entire lower limb. The mean age was twenty-four years for the male volunteers and twenty-three years for the female volunteers. The results were compared with those of two similar studies of white volunteers in the United States. Results: The medial inclination of the tibial plateau in the Chinese subjects (mean and standard deviation, 5.4 ± 2.5 degrees for women and 4.9 ± 2.3 degrees for men) was greater than the commonly reported 3 degrees. The extremities of the Chinese women were found to have a mean of 2.2 ± 2.5 degrees of varus alignment, and those of the Chinese men had a mean of 2.2 ± 2.7 degrees of varus alignment. Conclusions: Compared with the white subjects described in the studies by Moreland et al. and Hsu et al., the Chinese subjects had significantly larger medial inclination of the knee joint (knee-joint obliquity) (p < 0.005) and the female Chinese subjects had significantly more varus alignment of the lower extremity (p < 0.025). Clinical Relevance: Five degrees of external rotation of the femoral component, instead of the commonly reported 3 degrees, may be required to obtain a rectangular flexion gap in total knee arthroplasty in Chinese patients. The racial difference in the knee-joint obliquity may contribute to the racial difference in the ratio of knee osteoarthritis to hip osteoarthritis. Additional studies are necessary to confirm this relationship.en_HK
dc.languageengen_HK
dc.publisherJournal of Bone and Joint Surgery. The Journal's web site is located at http://www.jbjs.orgen_HK
dc.relation.ispartofJournal of Bone and Joint Surgery - Series Aen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleAxial alignment of the lower extremity in Chinese adultsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0301-620X&volume=82A&issue=11&spage=1603&epage=1608&date=2000&atitle=Axial+Alignment+of+the+Lower+Extremity+in+Chinese+Adultsen_HK
dc.identifier.emailChiu, KY:pkychiu@hkucc.hku.hken_HK
dc.identifier.authorityChiu, KY=rp00379en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.pmid11097451-
dc.identifier.scopuseid_2-s2.0-0033747697en_HK
dc.identifier.hkuros56069en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033747697&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume82en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1603en_HK
dc.identifier.epage1608en_HK
dc.identifier.isiWOS:000165385000014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTang, WM=7403430820en_HK
dc.identifier.scopusauthoridZhu, YH=7406072268en_HK
dc.identifier.scopusauthoridChiu, KY=7202988127en_HK

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