Is there an alternative to the full-leg radiograph for determining knee joint alignment in osteoarthritis?

Hinman, Rana S., May, Rachel L. and Crossley, Kay M. (2006) Is there an alternative to the full-leg radiograph for determining knee joint alignment in osteoarthritis?. Arthritis Care and Research, 55 2: 306-313. doi:10.1002/art.21836

Author Hinman, Rana S.
May, Rachel L.
Crossley, Kay M.
Title Is there an alternative to the full-leg radiograph for determining knee joint alignment in osteoarthritis?
Journal name Arthritis Care and Research   Check publisher's open access policy
ISSN 2151-464X
Publication date 2006-04-01
Year available 2006
Sub-type Article (original research)
DOI 10.1002/art.21836
Open Access Status DOI
Volume 55
Issue 2
Start page 306
End page 313
Total pages 8
Place of publication Hoboken, NJ United States
Publisher John Wiley and Sons
Language eng
Formatted abstract
Objective. To assess the concurrent validity of alternative measures of frontal plane knee alignment, namely the radiographic anatomic axis and 5 clinical measures, in medial compartment knee osteoarthritis (OA) as compared with the mechanical axis on radiograph. Methods. Forty individuals (mean ± SD age 64.7 ± 9.4 years) with symptomatic medial knee OA participated. Knee alignment was measured according to the following methods: lower-limb mechanical axis on radiograph, lower-limb anatomic axis on radiograph, visual observation, distance between medial knee joint lines or medial malleoli using a calliper, distance between a plumb line and medial knee joint line or malleolus using a calliper, tibial alignment using a gravity inclinometer, and lower-limb alignment using a goniometer. Data were analyzed using Pearson's correlation coefficient or Spearman's rho correlation coefficient and simple linear regression. Results. The anatomic axis best correlated with the mechanical axis (r = 0.88), followed closely by the inclinometer method (r = 0.80). Other clinical measures of alignment that were significantly associated with the mechanical axis were the calliper method, the plumb-line method, and visual observation (r = 0.76, 0.71, and -0.52, respectively). However, the goniometer method failed to correlate. Conclusion. The anatomic axis on radiograph and the inclinometer method appear to be valid alternatives to the mechanical axis on full-leg radiograph for determining frontal plane knee alignment in medial knee OA. These alternative methods of measuring knee alignment may increase the assessment of this parameter by clinicians and researchers alike, given that malalignment is an important indicator of disease progression and treatment outcome
Keyword Knee
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
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