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Familial, structural, and environmental correlates of MRI-defined bone marrow lesions: a sibpair study

Citation

Zhai, G and Stankovich, J and Cicuttini, F and Ding, C and Jones, G, Familial, structural, and environmental correlates of MRI-defined bone marrow lesions: a sibpair study, Arthritis Research & Therapy, 8, (4) pp. R137. ISSN 1478-6362 (2006) [Refereed Article]

DOI: doi:10.1186/ar2027

Abstract

The aim of this study was to estimate the heritability and describe the correlates of bone marrow lesions in knee subchondral bone. A sibpair design was used. T2- and T1- weighted MRI scans were performed on the right knee to assess bone marrow lesions at lateral tibia and femora and medial tibia and femora, as well as chondral defects. A radiograph was taken on the same knee and scored for individual features of osteoarthritis (radiographic osteoarthritis; ROA) and alignment. Other variables measured included height, weight, knee pain, and lower-limb muscle strength. Herita- bility was estimated with the program SOLAR (Sequential Oligogenetic Linkage Analysis Routines). A total of 115 siblings (60 females and 55 males) from 48 families, representing 95 sib pairs, took part. The adjusted heritability estimates were 53 ± 28% (mean ± SEM; p = 0.03) and 65 ± 32% (p = 0.03) for severity of bone marrow lesions at lateral and medial compartments, respectively. The estimates were reduced by 8 to 9% after adjustment for chondral defects and ROA (but not alignment). The adjusted heritability estimate was 99% for prevalent bone marrow lesions at both lateral and medial compartments. Both lateral and medial bone marrow lesions were significantly correlated with age, chondral defects, and ROA of the knee (all p < 0.05). Medial bone marrow lesions were also more common in males and were correlated with body mass index (BMI). Thus, bone marrow lesions have a significant genetic component. They commonly coexist with chondral defects and ROA but only share common genetic mechanisms to a limited degree. They are also more common with increasing age, male sex, and increasing BMI. © 2006 Zhai et al.; licensee BioMed Central Ltd.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Clinical Sciences
Research Field:Rheumatology and Arthritis
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Skeletal System and Disorders (incl. Arthritis)
Author:Zhai, G (Dr Guangju Zhai)
Author:Stankovich, J (Dr Jim Stankovich)
Author:Ding, C (Professor Chang-Hai Ding)
Author:Jones, G (Professor Graeme Jones)
ID Code:41565
Year Published:2006
Web of Science® Times Cited:18
Deposited By:Menzies Institute for Medical Research
Deposited On:2006-08-01
Last Modified:2011-09-21
Downloads:0

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