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<title>UTas ePrints - Association between age and knee structural change: a cross sectional MRI based study</title>
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<meta content="Ding, Changhai" name="eprints.creators_name" />
<meta content="Cicuttini, Flavia" name="eprints.creators_name" />
<meta content="Scott, Fiona" name="eprints.creators_name" />
<meta content="Cooley, Helen" name="eprints.creators_name" />
<meta content="Jones, Graeme" name="eprints.creators_name" />
<meta content="chding@utas.edu.au" name="eprints.creators_id" />
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<meta content="Association between age and knee structural change: a cross sectional MRI based study " name="eprints.title" />
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<meta content="knee, cartilage defects, volume, thickness, bone area, age" name="eprints.keywords" />
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<meta content="Objective: To describe the associations between age, knee cartilage morphology, and bone size in adults.
Methods: A cross sectional convenience sample of 372 male and female subjects (mean age 45 years, range 26-61) was studied. Knee measures included a cartilage defect five site score (0-4 respectively) and prevalence (defect score of >=2 at any site), cartilage volume and thickness, and bone surface area and/or volume. These were determined at the patellar, medial, and lateral tibial and femoral sites using T1 weighted fat saturation MRI. Height, weight, and radiographic osteoarthritis (ROA) were measured by standard protocols.
Results: In multivariate analysis, age was significantly associated with knee cartilage defect scores (beta = +0.016 to +0.073/year, all p<0.01) and prevalence (OR = 1.05-1.10/year, all p<0.05) in all compartments. Additionally, age was negatively associated with knee cartilage thickness at all sites (beta = -0.013 to -0.035 mm/year, all p<0.05), and with patellar (beta = -11.5 ul/year, p<0.01) but not tibial cartilage volume. Lastly, age was significantly positively associated with medial and lateral tibial surface bone area (beta = +3.0 to +4.7 mm2/year, all p<0.05) and patellar bone volume (beta = +34.4 ul/year, p<0.05). Associations between age and tibiofemoral cartilage defect score, cartilage thickness, and bone size decreased in magnitude after adjustment for ROA, suggesting these changes are directly relevant to OA.
Conclusion: The most consistent knee structural changes with increasing age are increase in cartilage defect severity and prevalence, cartilage thinning, and increase in bone size with inconsistent change in cartilage volume. Longitudinal studies are needed to determine which of these changes are primary and confirm their relevance to knee OA.
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<meta content="Ding, Changhai and Cicuttini, Flavia and Scott, Fiona and Cooley, Helen and Jones, Graeme (2006) Association between age and knee structural change: a cross sectional MRI based study. Annals of the Rheumatic Diseases, 64 (4). pp. 549-555. ISSN 0003-4967" name="eprints.citation" />
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<meta content="Association between age and knee structural change: a cross sectional MRI based study " name="DC.title" />
<meta content="Ding, Changhai" name="DC.creator" />
<meta content="Cicuttini, Flavia" name="DC.creator" />
<meta content="Scott, Fiona" name="DC.creator" />
<meta content="Cooley, Helen" name="DC.creator" />
<meta content="Jones, Graeme" name="DC.creator" />
<meta content="321028 Rheumatology and Arthritis" name="DC.subject" />
<meta content="Objective: To describe the associations between age, knee cartilage morphology, and bone size in adults.
Methods: A cross sectional convenience sample of 372 male and female subjects (mean age 45 years, range 26-61) was studied. Knee measures included a cartilage defect five site score (0-4 respectively) and prevalence (defect score of >=2 at any site), cartilage volume and thickness, and bone surface area and/or volume. These were determined at the patellar, medial, and lateral tibial and femoral sites using T1 weighted fat saturation MRI. Height, weight, and radiographic osteoarthritis (ROA) were measured by standard protocols.
Results: In multivariate analysis, age was significantly associated with knee cartilage defect scores (beta = +0.016 to +0.073/year, all p<0.01) and prevalence (OR = 1.05-1.10/year, all p<0.05) in all compartments. Additionally, age was negatively associated with knee cartilage thickness at all sites (beta = -0.013 to -0.035 mm/year, all p<0.05), and with patellar (beta = -11.5 ul/year, p<0.01) but not tibial cartilage volume. Lastly, age was significantly positively associated with medial and lateral tibial surface bone area (beta = +3.0 to +4.7 mm2/year, all p<0.05) and patellar bone volume (beta = +34.4 ul/year, p<0.05). Associations between age and tibiofemoral cartilage defect score, cartilage thickness, and bone size decreased in magnitude after adjustment for ROA, suggesting these changes are directly relevant to OA.
Conclusion: The most consistent knee structural changes with increasing age are increase in cartilage defect severity and prevalence, cartilage thinning, and increase in bone size with inconsistent change in cartilage volume. Longitudinal studies are needed to determine which of these changes are primary and confirm their relevance to knee OA.
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<h1 class="ep_tm_pagetitle">Association between age and knee structural change: a cross sectional MRI based study</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Ding, Changhai</span> and <span class="person_name">Cicuttini, Flavia</span> and <span class="person_name">Scott, Fiona</span> and <span class="person_name">Cooley, Helen</span> and <span class="person_name">Jones, Graeme</span> (2006) <xhtml:em>Association between age and knee structural change: a cross sectional MRI based study.</xhtml:em> Annals of the Rheumatic Diseases, 64 (4). pp. 549-555. ISSN 0003-4967</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/942/1/ARD.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/942/1/ARD.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />339Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1136/ard.2004.023069">http://dx.doi.org/10.1136/ard.2004.023069</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Objective: To describe the associations between age, knee cartilage morphology, and bone size in adults.
Methods: A cross sectional convenience sample of 372 male and female subjects (mean age 45 years, range 26-61) was studied. Knee measures included a cartilage defect five site score (0-4 respectively) and prevalence (defect score of >=2 at any site), cartilage volume and thickness, and bone surface area and/or volume. These were determined at the patellar, medial, and lateral tibial and femoral sites using T1 weighted fat saturation MRI. Height, weight, and radiographic osteoarthritis (ROA) were measured by standard protocols.
Results: In multivariate analysis, age was significantly associated with knee cartilage defect scores (beta = +0.016 to +0.073/year, all p<0.01) and prevalence (OR = 1.05-1.10/year, all p<0.05) in all compartments. Additionally, age was negatively associated with knee cartilage thickness at all sites (beta = -0.013 to -0.035 mm/year, all p<0.05), and with patellar (beta = -11.5 ul/year, p<0.01) but not tibial cartilage volume. Lastly, age was significantly positively associated with medial and lateral tibial surface bone area (beta = +3.0 to +4.7 mm2/year, all p<0.05) and patellar bone volume (beta = +34.4 ul/year, p<0.05). Associations between age and tibiofemoral cartilage defect score, cartilage thickness, and bone size decreased in magnitude after adjustment for ROA, suggesting these changes are directly relevant to OA.
Conclusion: The most consistent knee structural changes with increasing age are increase in cartilage defect severity and prevalence, cartilage thinning, and increase in bone size with inconsistent change in cartilage volume. Longitudinal studies are needed to determine which of these changes are primary and confirm their relevance to knee OA.
</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">Definitive version available at: http://ard.bmj.com/cgi/content/full/64/4/549</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">knee, cartilage defects, volume, thickness, bone area, age</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/321028.html">320000 Medical and Health Sciences > 321000 Clinical Sciences > 321028 Rheumatology and Arthritis</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">942</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Changhai / C Ding</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">03 May 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=942;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=942">item control page</a></p>
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