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Original ArticleOpen Access
Evaluation of Forearm Bone Mineral Density : Comparison of Dominant and Non-Dominant Forearms
Trivitayaratana W 
,
Trivitayaratana P
,
Trivitayaratana P WANNA TRIVITAYARATANA, M.D.*,
PI CHIT TRIVITAY ARA TANA, M.Sc.
*
For evaluation of forearm bone mineral density (BMD), (1) BMD of corresponding
sites of dominant and non-dominant forearms were compared and (2) characteristics of
each of the 4 regions of interest (ROis) including supradistal, distal 1110, distul 1/6 and
distal 113 along the long bone of both forearms were analyzed. One hundred and forty
one women (79 normal and 62 osteoporotic) were recruited by randomized selection from
the department of Nuclear Medicine of Phramongkutklao Hospital. Both dominant and
non-dominant forearms of each subject were scanned by Panasonic (DXA-70) dual energy
X-ray absorptiometry (DEXA) on the same day. Lumbar spine BMD was also measured
by Hologic DEXA (QDR-4500) and WHO criteria for diagnosis of osteoporosis was
applied for identifying osteoporosis and normal groups. The results showed that none
of the corresponding sites of BMD of both forearms were significantly different (p>0.05
for all). The BMD from distal to proximal of each long bone (radius and ulna) of both
forearms was gradually increased in osteoporosis and normal groups. Further distal
sites of the forearms and lower BMD were found. Comparison between mean BMD at
corresponding sites in normal and osteoporotic groups, had significantly different BMD
at both radii for all ROis (p0.05). A great percentage change of mean
BMD in the osteoporotic group was seen at supradistal and distal 1110 of both forearms
when using BMD in the normal group as control. We suggest that both distal radii especially
at supradistal and distal 1110 sites should be scanned in routine practice. The distal location
of the forearms had a relatively smaller amount of surrounding soft tissue than the proximal.
Key word : Forearms, Bone Density
PI CHIT TRIVITAY ARA TANA, M.Sc.
*
For evaluation of forearm bone mineral density (BMD), (1) BMD of corresponding
sites of dominant and non-dominant forearms were compared and (2) characteristics of
each of the 4 regions of interest (ROis) including supradistal, distal 1110, distul 1/6 and
distal 113 along the long bone of both forearms were analyzed. One hundred and forty
one women (79 normal and 62 osteoporotic) were recruited by randomized selection from
the department of Nuclear Medicine of Phramongkutklao Hospital. Both dominant and
non-dominant forearms of each subject were scanned by Panasonic (DXA-70) dual energy
X-ray absorptiometry (DEXA) on the same day. Lumbar spine BMD was also measured
by Hologic DEXA (QDR-4500) and WHO criteria for diagnosis of osteoporosis was
applied for identifying osteoporosis and normal groups. The results showed that none
of the corresponding sites of BMD of both forearms were significantly different (p>0.05
for all). The BMD from distal to proximal of each long bone (radius and ulna) of both
forearms was gradually increased in osteoporosis and normal groups. Further distal
sites of the forearms and lower BMD were found. Comparison between mean BMD at
corresponding sites in normal and osteoporotic groups, had significantly different BMD
at both radii for all ROis (p0.05). A great percentage change of mean
BMD in the osteoporotic group was seen at supradistal and distal 1110 of both forearms
when using BMD in the normal group as control. We suggest that both distal radii especially
at supradistal and distal 1110 sites should be scanned in routine practice. The distal location
of the forearms had a relatively smaller amount of surrounding soft tissue than the proximal.
Key word : Forearms, Bone Density
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