Bone mineral density and prevalent osteoarthritis of the hip in older men for the Osteoporotic Fractures in Men (MrOS) Study Group.
ABSTRACT We evaluated the association of bone mineral density (BMD) and osteoarthritis (OA) of the hip in elderly men. We found that elderly men with moderate to severe radiographic hip OA (RHOA) had significantly higher areal BMD (aBMD) and volumetric BMD (vBMD) at both the lumbar spine and hip compared to age similar controls without OA.
We evaluated the association of BMD measured by dual energy X-ray absorptiometry (DXA) and quantitative computerized tomography (integral, cortical, and trabecular vBMD) and RHOA in a cohort of elderly men.
A cross-sectional analysis was conducted within the Study of Osteoporotic Fractures in Men, a prospective cohort study of 5,995 US men age > or = 65 years. Standing pelvic x-rays were done in 4,024 subjects and scored for prevalent RHOA severity. DXA was done in 3,886 subjects, and aBMD and vBMD associations were compared with RHOA score using linear regression, adjusting for covariates.
Both moderate and severe RHOA groups had significantly higher aBMD at all BMD sites (range, 3.7-10.0% difference; p value 0.0012 and p value < 0.005) compared to the control group with no RHOA. The difference remained strong after adjusting for covariates. While the total hip and lumbar spine cortical vBMD measurements of subjects with moderate or severe RHOA was increased compared to controls, trabecular vBMD was not.
Older men, with both moderate and severe RHOA, had significantly higher aBMD and integral vBMD at the hip and lumbar spine compared to controls without RHOA.
Article: Reliability of new indices of radiographic osteoarthritis of the hand and hip and lumbar disc degeneration.[show abstract] [hide abstract]
ABSTRACT: To develop a method for assessing the presence and severity of radiographic features of osteoarthritis (OA) of the hip and hand, and thoracic and lumbar disc degeneration. An atlas illustrating scoring of individual radiographic features and summary grades for individual joints was developed. Three readers evaluated 31 pelvic films, 27 hand films, and 25 lateral lumbar and thoracic spine films selected from a community based sample of healthy elderly women. Interrater agreement between the 3 readers, and test-retest agreement for one of the readers, were estimated by the intraclass correlation coefficient (ICC) and kappa statistic. Interrater agreement (ICC, unless otherwise noted) for individual radiographic features of the hip ranged from 0.66 for osteophytes to 0.80 for narrowing. For the 9 interphalangeal (IP) joints of the hand, agreement ranged from 0.42 (kappa) for sclerosis to 0.93 for narrowing, and for the lumbar spine from 0.55 (kappa) for sclerosis to 0.95 for narrowing. Interrater agreement for summary grades of radiographic findings was as follows: hip, 0.81; 5 distal interphalangeal joints (DIP), 0.89; 4 proximal interphalangeal joints (PIP), 0.82; and lumbar spine, 0.93. Intrarater agreement for summary grades was as follows: hips, 0.79; 5 DIP, 0.86; 4 PIP, 0.81; and lumbar spine, 0.90. We have developed reliable indices of the presence and severity of radiographic features of hip and hand OA and spinal disc degeneration for use in epidemiologic studies. The assessment includes grading of individual radiographic features, which allows for the independent variation in these features often found in OA and a summary grade of disease that is derived from the presence and severity of individual features.The Journal of Rheumatology 12/1993; 20(11):1911-8. · 3.69 Impact Factor